CN108271014B - Detection device and method, and tracking effect evaluation system and method for stereoscopic display device - Google Patents

Detection device and method, and tracking effect evaluation system and method for stereoscopic display device Download PDF

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CN108271014B
CN108271014B CN201611242537.4A CN201611242537A CN108271014B CN 108271014 B CN108271014 B CN 108271014B CN 201611242537 A CN201611242537 A CN 201611242537A CN 108271014 B CN108271014 B CN 108271014B
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stereoscopic display
image
tracking
camera
tracking target
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CN108271014A (en
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乔梦阳
周峰
叶磊
赵兴海
李焘然
韩周迎
李统福
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Shenzhen Super Technology Co Ltd
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SuperD Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N17/00—Diagnosis, testing or measuring for television systems or their details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof

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  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
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Abstract

The invention belongs to the technical field of stereoscopic display, and provides a detection device and a detection method, and a tracking effect evaluation system and a tracking effect evaluation method for a stereoscopic display device. The system comprises a detection device and an evaluation device. The detection device includes: the device comprises a first image acquisition device, a second image acquisition device, a first tracking target, a second tracking target and a processing device. The processing device is used for: when the stereoscopic display device is detected to track to a first tracking target, acquiring a first stereoscopic display image displayed by the stereoscopic display device and determining whether a preset condition is met; when satisfied, instructing the stereoscopic display device to start tracking the second tracking target and recording a first time T1 or a time T2 at which the first stereoscopic image satisfies a preset condition; when the tracking target is detected to be tracked to the second tracking target, acquiring a displayed second stereoscopic display image; determining whether the acquired second stereoscopic display image meets a preset condition; when satisfied, recording a second time T3; calculating a difference between T3 and T1 or between T3 and T2, and determining the difference as a tracking mapping delay time.

Description

Detection device and method, and tracking effect evaluation system and method for stereoscopic display device
Technical Field
The invention relates to the technical field of stereoscopic display, in particular to a detection device and a detection method for detecting tracking arrangement delay time of a stereoscopic display device, a stereoscopic display device tracking effect evaluation system based on the detection device and a stereoscopic display device tracking effect evaluation method based on the detection method.
Background
In recent years, the development of stereoscopic display technology is rapid, and the stereoscopic display technology becomes a hot point of research. The stereoscopic display technology has been widely applied to various fields such as medical treatment, advertisement, military affairs, exhibition, game and vehicle-mounted display.
The imaging principle of the stereoscopic image display technology is as follows: based on binocular parallax of the viewer, the left eye and the right eye of the viewer respectively perceive parallax images with image difference, and the brain of the viewer forms a stereoscopic image based on the perceived image difference.
The traditional naked eye 3D display device is provided with a tracking sensor for tracking a viewer to enable the viewer to view a better three-dimensional image, the position of the viewer is positioned through the tracking sensor, and the viewer can view a better 3D display effect at each position through image processing according to the position information of the viewer. However, the display effect of the existing naked-eye 3D display device is extremely dependent on the accuracy and real-time performance of the tracking sensor, and the more accurate the tracked position information of the viewer is, the better the 3D display effect (i.e. the lower the crosstalk) the viewer sees at each viewing position; the more real-time the viewer's position is tracked, the lower the smearing during movement.
At present, when the tracking effect (especially the trailing effect occurring in the tracking process) of a stereoscopic display device is evaluated, subjective judgment is mainly carried out according to the experience of technicians, and different evaluations may be carried out on the quality of the image displayed by the same stereoscopic display device and different technicians according to the difference of the experience. This lacks an objective, quantifiable assessment of the tracking smearing effect of a stereoscopic display device.
Therefore, objective and quantifiable evaluation of tracking smearing when a tracking device of a stereoscopic display device switches from a tracking target at one position to a tracking target at another position becomes a problem which needs to be solved urgently in the industry at present.
Disclosure of Invention
The invention aims to provide a detection device and a detection method, a tracking effect evaluation system and a tracking effect evaluation method of a stereoscopic display device and a computer readable storage medium, and aims to solve the problem that the tracking trailing effect of the stereoscopic display device is lack of objective and quantifiable evaluation in the prior art.
The invention provides a detection device for detecting the delay time of tracking and arranging images of a stereoscopic display device, wherein the stereoscopic display device comprises a tracking device, and the detection device comprises: the system comprises a first image acquisition device, a first tracking target, a second image acquisition device, a second tracking target and a processing device; the first image acquisition device and the first tracking target are located at a first position, the second image acquisition device and the second tracking target are located at a second position, the first position is different from the second position, and the processing device is configured to: when the stereoscopic display device is detected to track to the first tracking target, the first image acquisition device is instructed to acquire a first stereoscopic display image displayed by the stereoscopic display device; determining whether the first stereoscopic display image acquired by the first image acquisition device meets a preset condition; when it is determined that the first stereoscopic display image satisfies a preset condition, instructing the stereoscopic display device to start tracking the second tracking target located at the second position and recording a first time T1 at which the stereoscopic display device starts tracking the second tracking target, or T2 at which the first stereoscopic image satisfies the preset condition; when the stereoscopic display device is detected to track to the second tracking target, the second image acquisition device is instructed to acquire a second stereoscopic display image displayed by the stereoscopic display device; determining whether the second stereoscopic display image acquired by a second image acquisition device corresponding to the second position meets the preset condition; recording a second time T3 when it is determined that the second stereoscopic display image satisfies the preset condition; calculating a difference of the T3 and the T1 or calculating a difference of the T3 and the T2, and determining the difference as a tracking permutation delay time.
The present invention also provides another detection apparatus for detecting a tracking alignment delay time of a stereoscopic display apparatus including a tracking device, wherein the detection apparatus includes: the system comprises a first image acquisition device, a first tracking target, a second image acquisition device, a second tracking target and a processing device; the first image capturing device and the first tracking target are located at a first position, the second image capturing device and the second tracking target are located at a second position, the first position is different from the second position, and the processing device includes: the acquisition first stereoscopic display image indicating unit is used for indicating the first image acquisition device to acquire a first stereoscopic display image displayed by the stereoscopic display equipment when the stereoscopic display equipment is detected to track to the first tracking target; the first judgment unit is used for determining whether the first stereoscopic display image acquired by the first image acquisition device meets a preset condition or not; a first timing determination and recording unit configured to, when it is determined that the first stereoscopic display image satisfies a preset condition, instruct the stereoscopic display device to start tracking the second tracking target at the second position and record a first timing T1 at which the stereoscopic display device starts tracking the second tracking target, or a timing T2 at which the first stereoscopic image satisfies the preset condition; the acquisition second stereoscopic display image indicating unit is used for indicating the second image acquisition device to acquire a second stereoscopic display image displayed by the stereoscopic display equipment when the stereoscopic display equipment is detected to track to the second tracking target; the second judging unit is used for determining whether the second stereoscopic display image acquired by the second image acquisition device corresponding to the second position meets the preset condition; a second time determination and recording unit configured to record a second time T3 when it is determined that the second stereoscopic display image satisfies the preset condition; a calculation unit for calculating a difference value of the T3 and the T1 or calculating a difference value of the T3 and the T2, and determining the difference value as a tracking mapping delay time.
The invention also provides a tracking effect evaluation system of the stereoscopic display device, which comprises: a detection device and an evaluation device, wherein the detection device comprises at least: the system comprises a first image acquisition device, a first tracking target, a second image acquisition device, a second tracking target and a processing device; the first image acquisition device and the first tracking target are located at a first position, the second image acquisition device and the second tracking target are located at a second position, the first position is different from the second position, and the processing device is configured to: when the stereoscopic display device is detected to track to the first tracking target, the first image acquisition device is instructed to acquire a first stereoscopic display image displayed by the stereoscopic display device; determining whether the first stereoscopic display image acquired by the first image acquisition device meets a preset condition; when it is determined that the first stereoscopic display image satisfies a preset condition, instructing the stereoscopic display device to start tracking the second tracking target located at the second position and recording a first time T1 at which the stereoscopic display device starts tracking the second tracking target, or T2 at which the first stereoscopic image satisfies the preset condition; when the stereoscopic display device is detected to track to the second tracking target, the second image acquisition device is instructed to acquire a second stereoscopic display image displayed by the stereoscopic display device; determining whether the second stereoscopic display image acquired by a second image acquisition device corresponding to the second position meets the preset condition; recording a second time T3 when it is determined that the second stereoscopic display image satisfies the preset condition; calculating a difference of the T3 and the T1 or calculating a difference of the T3 and the T2, and determining the difference as a tracking permutation delay time. And the evaluation device determines the tracking effect of the stereoscopic display device according to the tracking arrangement delay time detected by the detection device.
The invention also provides a detection method for detecting the tracking and scheduling delay time of the stereoscopic display equipment, wherein the method comprises the following steps: s1, when detecting that the stereoscopic display device tracks a first tracking target at a first position, indicating an image acquisition device corresponding to the first position to acquire a first stereoscopic display image displayed by the stereoscopic display device; s2, determining whether the first stereoscopic display image acquired by the image acquisition device corresponding to the first position meets a preset condition; s3, when it is determined that the first stereoscopic display image satisfies the preset condition, instructing the stereoscopic display device to start tracking a second tracking target located at a second position and recording a first time T1 at which the stereoscopic display device starts tracking the second tracking target, or T2 at which the first stereoscopic image satisfies the preset condition; s4, when the stereoscopic display device is detected to track the second tracking target, indicating the image acquisition device corresponding to the second position to acquire a second stereoscopic display image displayed by the stereoscopic display device; s5, determining whether the second stereoscopic display image acquired by the image acquisition device corresponding to the second position meets the preset condition; s6, when determining that the second stereo display image meets the preset condition, recording a second moment, wherein the second moment is a moment T3 when the second stereo display image meets the preset condition; s7 calculating the difference between the T3 and the T1 or the difference between the T3 and the T2, determining the difference as a tracking mapping delay time; wherein the first position is different from the second position.
The invention also provides a tracking effect evaluation method of the stereoscopic display equipment. The tracking effect evaluation method of the stereoscopic display device comprises the following steps: a detection method and an evaluation method; wherein, the detection method at least comprises the following steps: s1, when detecting that the stereoscopic display device tracks a first tracking target at a first position, indicating an image acquisition device corresponding to the first position to acquire a first stereoscopic display image displayed by the stereoscopic display device; s2, determining whether the first stereoscopic display image acquired by the image acquisition device corresponding to the first position meets a preset condition; s3, when it is determined that the first stereoscopic display image satisfies the preset condition, instructing the stereoscopic display device to start tracking a second tracking target located at a second position and recording a first time T1 at which the stereoscopic display device starts tracking the second tracking target, or T2 at which the first stereoscopic image satisfies the preset condition; s4, when the stereoscopic display device is detected to track the second tracking target, indicating the image acquisition device corresponding to the second position to acquire a second stereoscopic display image displayed by the stereoscopic display device; s5, determining whether the second stereoscopic display image acquired by the image acquisition device corresponding to the second position meets the preset condition; s6, when the second stereoscopic display image is determined to meet the preset condition, recording a second moment T3; s7 calculating the difference between the T3 and the T1 or the difference between the T3 and the T2, determining the difference as a tracking mapping delay time; wherein the first position is different from the second position. The evaluation method is used for evaluating the tracking effect of the three-dimensional display equipment according to the tracking arrangement delay time determined by the detection method.
The present invention also provides a computer readable storage medium comprising a computer program for use in conjunction with a stereoscopic display device having a tracking means, a first image capture means, a first tracked target, a second image capture means, a second tracked target, the computer program being executable by a processing means to perform the steps of: s1, when detecting that the stereoscopic display device tracks a first tracking target at a first position, indicating an image acquisition device corresponding to the first position to acquire a first stereoscopic display image displayed by the stereoscopic display device; s2, determining whether the first stereoscopic display image acquired by the image acquisition device corresponding to the first position meets a preset condition; s3, when it is determined that the first stereoscopic display image satisfies the preset condition, instructing the stereoscopic display device to start tracking a second tracking target located at a second position and recording a first time T1 at which the stereoscopic display device starts tracking the second tracking target, or T2 at which the first stereoscopic image satisfies the preset condition; s4, when the stereoscopic display device is detected to track the second tracking target, indicating the image acquisition device corresponding to the second position to acquire a second stereoscopic display image displayed by the stereoscopic display device; s5, determining whether the second stereoscopic display image acquired by the image acquisition device corresponding to the second position meets the preset condition; s6, when the second stereoscopic display image is determined to meet the preset condition, recording a second moment T3; s7 calculating the difference between the T3 and the T1 or the difference between the T3 and the T2, determining the difference as a tracking mapping delay time; wherein the first position is different from the second position.
The detection device and method, the tracking effect evaluation system and method of the three-dimensional display device and the computer readable storage medium of the invention can objectively evaluate the tracking effect of the three-dimensional display device by objectively obtaining quantifiable tracking scheduling delay time.
Drawings
Fig. 1 shows a schematic structural diagram of a detection apparatus according to a first embodiment of the present invention.
Fig. 2 shows a schematic structural diagram of example 1 of the detection apparatus according to the first embodiment of the present invention.
Fig. 3 shows a schematic structural diagram of example 2 of the detection apparatus according to the first embodiment of the present invention.
Fig. 4 is a schematic configuration diagram showing a processing device of a detection apparatus according to a second embodiment of the present invention.
Fig. 5 is a schematic configuration diagram showing a tracking effect evaluation system of a stereoscopic display device according to a third embodiment of the present invention.
Fig. 6 is a flowchart illustrating a detection method according to a fourth embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Implementation mode one
Referring to fig. 1, fig. 1 is a schematic structural diagram of a detection apparatus according to a first embodiment of the present invention. As shown in fig. 1, a stereoscopic display device 10 according to a first embodiment of the present invention includes: a tracking device 11 and a display device and a light splitting device. The tracking device 11 is used for tracking the position of the specified target object, the display device displays according to the position information tracked by the tracking device, and then the light splitting device sends the display images to the left eye and the right eye of the viewer respectively. The detection device of the present invention is used for detecting the tracking profile delay time of the stereoscopic display device 10. The detection apparatus includes:
a first image acquisition device 30, a first tracking target 50, a second image acquisition device 40, a second tracking target 60 and a processing device 20; the first tracking target 50 and the first image capturing device 30 may be integrally disposed, for example, the first tracking target 50 may be disposed on the first image capturing device 30, or both may be disposed separately. The second image capturing device 40 is similar to the second tracking target 60.
The first image capturing device 30 and the first tracking target 50 are located at a first position, the second image capturing device 40 and the second tracking target 60 are located at a second position, the first position is different from the second position, and the processing device 20 is configured to:
when the stereoscopic display device 10 is detected to track to the first tracking target 30, instructing the first image acquisition device 30 to acquire a first stereoscopic display image displayed by the stereoscopic display device 10;
determining whether the first stereoscopic display image acquired by the first image acquisition device 30 meets a preset condition;
when it is determined that the first stereoscopic display image satisfies a preset condition, instructing the stereoscopic display device 10 to start tracking the second tracking target at the second position and recording a first time T1 at which the stereoscopic display device 10 starts tracking the second tracking target, or T2 at which the first stereoscopic image satisfies the preset condition;
when the stereoscopic display device 10 is detected to track to the second tracking target, instructing the second image acquisition device 40 to acquire a second stereoscopic display image displayed by the stereoscopic display device 10;
determining whether the second stereoscopic display image acquired by the second image acquisition device 40 corresponding to the second position meets the preset condition;
when the second stereoscopic display image is determined to meet the preset condition, recording a second moment, wherein the second moment is a moment T3 when the second stereoscopic display image meets the preset condition;
calculating a difference of the T3 and the T1 or calculating a difference of the T3 and the T2, and determining the difference as a tracking permutation delay time.
Through the technical scheme, the detection device objectively obtains the quantifiable tracking arrangement delay time T which is T3-T2 and is a quantifiable numerical value, quantifies the tracking arrangement delay time of the tracking device 11 of the stereoscopic display device 10 in the moving process, and takes the quantified tracking arrangement delay time as a performance index for evaluating the tracking effect of the stereoscopic display device 10. Compensation can be added quantitatively according to the delay time (or tracking tailing time) of the tracking arrangement diagram, the tracking tailing effect of the three-dimensional display equipment 10 is improved, 3D display crosstalk is reduced, and the user experience of a viewer is improved.
In a specific embodiment, the detecting device of the present invention may further determine a tracking delay time of the tracking means 11 of the stereoscopic display device 10, specifically, instruct, by the processing means 20, the stereoscopic display device to start tracking the second tracking target located at the second position and record a third time, which is a time T4 when the stereoscopic display device starts tracking the second tracking target;
when the stereoscopic display device is detected to track to the second tracking target, recording a fourth moment, wherein the fourth moment is a moment T5 when the stereoscopic display device tracks to the second tracking target;
a difference between the T5 and the T4 is calculated and determined as a tracking delay time.
In another embodiment, the detection apparatus of the present invention may further determine the mapping delay time of the tracking device 11 of the stereoscopic display apparatus 10, mainly by the processing device 20 invoking the second image capturing device 40. Specifically, the processing device 20 instructs the second image capturing device 40 to start capturing the second stereoscopic display image displayed by the stereoscopic display apparatus and records a fifth time T6 at which the second image capturing device 40 starts capturing the second stereoscopic display image displayed by the stereoscopic display apparatus;
determining whether the second stereoscopic display image acquired by the second image acquisition device 40 corresponding to the second position meets the preset condition, and recording a sixth moment when the second stereoscopic display image meets the preset condition, wherein the sixth moment is a moment T7 when the second stereoscopic image meets the preset condition;
calculating a difference of the T7 and the T6, and determining the difference as a scheduling delay time.
It should be noted that the detection device of the present invention is mainly used for monitoring the tracking real-time performance of the tracking device (tracking apparatus) during the production process of the tracking device or the assembly process of the stereoscopic display device by the manufacturer, and can also be applied to the consumer to evaluate the tracking effect of the stereoscopic display device 10. The stereoscopic display device 10 may be a cell phone, tablet, game console, desktop computer, or other electronic device with a stereoscopic display. The processing device 20 is also in communication connection with the first image capturing device 30 and the second image capturing device 40, respectively, and the stereoscopic display apparatus 10. Here, the communication may be wired communication or wireless communication. The processing device 20 may be a computer device with independent data processing capability, such as a desktop computer (PC) or a notebook computer. Furthermore, in practice, the processing means 20 may be the stereoscopic display device 10 for performing the tracking effect evaluation as described above, for cost saving.
The following examples 1 and 2 are further described on the basis of the foregoing of embodiment one.
Example 1
Referring to fig. 2, fig. 2 is a schematic structural diagram of an embodiment 1 of a detection apparatus according to a first embodiment of the present invention. As shown in fig. 2, in the detection apparatus in this embodiment 1, the first tracking target includes a first infrared headband, and the first infrared headband includes: the first hair clasp body 51 is arranged on the first hair clasp body 51, and the first infrared light emitting devices 52 and 53 are arranged on the first hair clasp body 51 corresponding to the first image acquisition device 30. The second tracking target includes: a second infrared headband, the second infrared headband comprising: and the second hair band body 61 is arranged on the second hair band body 61 and corresponds to the second infrared light emitting devices 62 and 63 arranged on the second image acquisition device 40.
The first image capturing device 30 includes a first camera 31 for capturing a left eye image of the first stereoscopic display image and a second camera 32 for capturing a right eye image of the first stereoscopic display image, which are arranged in parallel at a first predetermined interval. The first infrared light emitting device includes a first infrared light emitting unit 52 and a second infrared light emitting unit 53, wherein the first infrared light emitting unit 53 corresponds to the first camera 31, the second infrared light emitting unit 53 corresponds to the second camera 32, and a position corresponding relationship between the first camera 31 and the first infrared light emitting unit 52 and a position corresponding relationship between the second camera 32 and the second infrared light emitting unit 53 can be calculated and measured in advance. The first camera 31 and the second camera 32 are used to simulate human eyes, so that the distance between the first camera 31 and the second camera 32 is close to the distance between the human eyes, the first preset distance can be set within the range of 5.0-7.5 cm, and the preferable distance is 6.5 cm.
The second image capturing device 40 includes a third camera 41 and a fourth camera 42, which are arranged in parallel at a second predetermined interval. The second infrared light emitting device includes a third infrared light emitting unit 62 and a fourth infrared light emitting unit 63, where the third infrared light emitting unit 62 corresponds to the third camera 41, and the fourth infrared light emitting unit 63 corresponds to the fourth camera 42. Here, the second predetermined interval between the third camera 41 and the fourth camera 42 is similar to the above first predetermined interval, and the second predetermined interval may be set in a range of 5.0 to 7.5cm, and preferably 6.5 cm. In addition, although the first predetermined distance and the second predetermined distance are both used to simulate the human eye, they are not necessarily set to the same value.
Specifically, the tracking device 11 of the stereoscopic display device 10 determines the positions of the first camera 31 and the second camera 32 according to the positioning signals respectively emitted by the first infrared light unit 52 and the second infrared light unit 53 and according to the known position corresponding relationship between the first camera 31 and the first infrared light unit 52 and the known position corresponding relationship between the second camera 32 and the second infrared light unit 53, generates position information, performs pixel arrangement according to the position information, and then displays the corresponding left-eye image and right-eye image. Then the first camera 31 shoots a left eye image to generate a first shot picture and the second camera 32 shoots a right eye image to generate a second shot picture; here, the stereoscopic display image composed of the first photographed picture and the second photographed picture includes: the method comprises the steps that a first image is displayed in a three-dimensional mode of a three-dimensional display device 10 and collected by a first image collecting device, then a first shooting picture and a second shooting picture are sent to a processing device 20, the processing device 20 carries out image processing according to the received first shooting picture and the received second shooting picture, and whether the first shooting picture and the second shooting picture meet preset conditions or not is judged. When it is determined that the acquired first stereoscopic display image satisfies a preset condition, instructing the stereoscopic display device 10 to start tracking the second tracking target located at the second position and recording a first time T1 at which the stereoscopic display device 10 starts tracking the second tracking target, or T2 at which the first stereoscopic image satisfies the preset condition.
The second image capturing device includes: the third camera 41 and the fourth camera 42, and the second tracking target includes: a second infrared headband, the second infrared headband comprising: the second hair band body 61 is arranged on the second hair band body 61, a third infrared light unit 62 corresponding to the third camera 41 and a fourth infrared light unit 63 corresponding to the fourth camera 42 are arranged on the second hair band body 61, and the position corresponding relation between the third shooting unit 41 and the third infrared light unit 62 and the position corresponding relation between the fourth shooting unit 42 and the fourth infrared light unit 63 can be calculated and measured in advance. The tracking device 11 of the stereoscopic display device 10 determines the positions of the third camera 41 and the fourth camera 42 according to the positioning signals respectively emitted by the third infrared light unit 62 and the fourth infrared light unit 63 and according to the known position corresponding relationship between the third camera 41 and the third infrared light unit 62 and the known position corresponding relationship between the fourth camera 42 and the fourth infrared light unit 63, generates position information, performs pixel arrangement according to the position information, and displays the corresponding left-eye image and right-eye image. The stereoscopic display device 10 is controlled to recognize the third camera 41 and the fourth camera 42, and then the third camera 41 is controlled to shoot the left eye image displayed by the stereoscopic display device to generate a third shot picture, and the fourth camera 42 is controlled to shoot the right eye image displayed by the stereoscopic display device to generate a fourth shot picture. Then, the third shooting picture and the fourth shooting picture are sent to the processing device 20, and the processing device 20 performs image processing according to the received third shooting picture and the fourth shooting picture, and determines whether the third shooting picture and the fourth shooting picture (i.e., the acquired second stereoscopic display image) reach a preset condition. When the second stereoscopic display image is determined to meet the preset condition, recording a second moment, wherein the second moment is a moment T3 when the second stereoscopic display image meets the preset condition;
calculating a difference of the T3 and the T1 or calculating a difference of the T3 and the T2, and determining the difference as a tracking permutation delay time.
In addition, a connection line between the center of the first camera 31 and the center of the second camera 32 is denoted as a first center line, a connection line between the center of the first infrared light emitting unit 52 and the center of the second infrared light emitting unit 53 is a first connection line, the first connection line is parallel to the first center line, and a distance range between the first connection line and the first center line is set to be 0-8 cm, preferably 4 cm. A connection line between the center of the third camera 41 and the center of the fourth camera 42 is denoted as a second center line, a connection line between the center of the third infrared light emitting unit 62 and the center of the fourth infrared light emitting unit 63 is a second connection line, the second connection line is parallel to the second center line, and a distance range between the second connection line and the second center line is set to be 0-8 cm, preferably 4 cm. Preferably, the center of the second infrared light emitting unit 53 is located in a plane defined by the center of the first camera 31, the center of the second camera 32, and the center of the first infrared light emitting unit 52. Preferably, the center of the fourth infrared light emitting unit 63 is located in a plane defined by the center of the third camera 41, the center of the fourth camera 42, and the center of the third infrared light emitting unit 62.
In a modified embodiment, the first infrared hair band may be provided with an infrared light source in the first hair band body, the second infrared hair band may be provided with an infrared light source in the second hair band body, when the first tracking target is tracked and positioned, the infrared light source arranged in the first hair band body is turned on, and the infrared light source arranged in the second hair band body is turned off; when the second tracking target is tracked and positioned, the infrared light source arranged in the second hair clasp body is lightened, and the infrared light source arranged in the first hair clasp body is turned off.
In another modified embodiment, the first tracking target and the second tracking target may be wearable units such as glasses, for example, when the wearable units are glasses, the first camera and the second camera are respectively disposed at two lens positions of the glasses, the first infrared positioning unit and the second infrared positioning unit are respectively disposed at two corresponding lenses on the frame, the tracking device of the stereoscopic display device performs tracking positioning according to a signal emitted by the first infrared positioning unit and a signal emitted by the second infrared positioning unit, and then performs tracking mapping delay time calculation.
Example 2
Referring to fig. 3, fig. 3 is a schematic structural diagram of an example 2 of a detection apparatus according to a first embodiment of the present invention. As shown in fig. 3, the first tracking target of the present embodiment 2 includes: a first face model 54, wherein the first image acquisition device 30 is arranged at the position of the eyes of the first face model 54; the second tracking target includes: a second face model 64, the second image acquisition device 40 being arranged at the eyes of the second face model 64.
The first image capturing device 30 includes a fifth camera and a sixth camera, where the fifth camera may be a first camera 31 and the sixth camera may be a second camera 32, and the first camera 31 and the second camera 32 are respectively disposed at a left eye and a right eye of the human eye position of the first face model to respectively capture a left eye image and a right eye image of the first stereoscopic display image; the second image capturing device includes a seventh camera 41 and an eighth camera, where the seventh camera may be a third camera 41 and the eighth camera may be a fourth camera 42, and the third camera 41 and the fourth camera 42 are respectively disposed at a left eye and a right eye of the human eye position of the second face model 64, and respectively capture a left eye image and a right eye image of the second stereoscopic display image.
Specifically, the first tracking target and the second tracking target in this embodiment 2 respectively adopt a face model. Taking the first tracking target as an example, the first camera 31 and the second camera 32 are correspondingly arranged at the eye position of the first face model 54, where the distance between the two eyes is the same as the distance between the eyes of a real person, the value range is 5cm to 7.5cm, and the preferable value is 6.5 cm. And a third camera 41 and a fourth camera 42 are correspondingly arranged at the eye positions of the second face model 64 corresponding to the second tracking target.
The first tracking target and the second tracking target of embodiments 1 and 2 may be wearable units such as glasses to assist the tracking device 11 of the stereoscopic display device 10 in tracking, identifying and positioning, besides the infrared headband with the infrared positioning function.
In the first embodiment of the present invention, the determination of whether the first stereoscopic display image and the second stereoscopic display image respectively acquired by the first image acquisition device and the second image acquisition device satisfy the preset condition may be determined as follows: calculating a first current percentage of a number of pixels of a first pixel in the left eye image of a first stereoscopic display image or a second stereoscopic display image to a total number of pixels of the left eye image, and calculating a second current percentage of a number of pixels of a second pixel in the right eye image of the first stereoscopic display image or the second stereoscopic display image to the total number of pixels of the right eye image, wherein the first pixel is different from the second pixel;
and obtaining a value to be compared according to the first current percentage, the second current percentage and a preset relation between the first current percentage and the second current percentage, and judging whether the value to be compared is larger than or equal to a corresponding preset threshold value. Here, the preset relationship is at least one of a sum, a product, a mean, or an extremum between the first current percentage and the second current percentage. In an example of meeting the preset condition, the product of the first current percentage and the second current percentage is greater than or equal to the corresponding preset threshold.
Second embodiment
Referring to fig. 4, fig. 4 is a schematic structural diagram of a processing device of a detection apparatus according to a second embodiment of the present invention. As shown in fig. 4, the detecting device of the present invention is used for detecting the tracking alignment delay time of a stereoscopic display device including a tracking means. The detection apparatus includes:
a first image acquisition device, a first tracking target, a second image acquisition device, a second tracking target and a processing device 20; the first image acquisition device and the first tracking target are located at a first position, the second image acquisition device and the second tracking target are located at a second position, and the first position is different from the second position. The first image capturing device, the first tracking target, the second image capturing device, and the second tracking target are the same as those in the first embodiment, and please refer to the first embodiment in detail, which is not described herein again. The difference from the first embodiment is that the processing device 20 includes:
a collected first stereoscopic display image indicating unit 210, configured to, when it is detected that the stereoscopic display device tracks the first tracking target, indicate the first image collecting device to collect a first stereoscopic display image displayed by the stereoscopic display device;
a first judging unit 220, configured to determine whether the first stereoscopic display image acquired by the first image acquisition device meets a preset condition;
a first timing determination and recording unit 230 configured to, when it is determined that the first stereoscopic display image satisfies a preset condition, instruct the stereoscopic display device to start tracking the second tracking target located at the second position and record a first timing T1 at which the stereoscopic display device starts tracking the second tracking target, or a timing T2 at which the first stereoscopic image satisfies the preset condition;
a second stereoscopic display image acquisition indicating unit 240, configured to, when it is detected that the stereoscopic display device tracks the second tracking target, instruct the second image acquisition device to acquire a second stereoscopic display image displayed by the stereoscopic display device;
a second determining unit 250, configured to determine whether the second stereoscopic display image acquired by the second image acquisition device corresponding to the second position meets the preset condition;
a second time determination and recording unit 260, configured to, when it is determined that the second stereoscopic display image satisfies the preset condition, record a second time, which is a time T3 at which the second stereoscopic image satisfies the preset condition;
a calculating unit 270 for calculating a difference value of the T3 and the T1 or calculating a difference value of the T3 and the T2, and determining the difference value as a tracking permutation delay time.
Third embodiment
Referring to fig. 5, fig. 5 is a schematic structural diagram illustrating a tracking effect evaluation system of a stereoscopic display device according to a third embodiment of the present invention. As shown in fig. 5, includes: a detection device 100 and an evaluation device 200. The detection apparatus 100 and the detection apparatuses described in the first and second embodiments at least include: the system comprises a first image acquisition device, a first tracking target, a second image acquisition device, a second tracking target and a processing device; the first image acquisition device and the first tracking target are located at a first position, the second image acquisition device and the second tracking target are located at a second position, the first position is different from the second position, and the processing device is configured to: when the stereoscopic display device is detected to track to the first tracking target, the first image acquisition device is instructed to acquire a first stereoscopic display image displayed by the stereoscopic display device; determining whether the first stereoscopic display image acquired by the first image acquisition device meets a preset condition; when it is determined that the first stereoscopic display image satisfies a preset condition, instructing the stereoscopic display device to start tracking the second tracking target located at the second position and recording a first time T1 at which the stereoscopic display device starts tracking the second tracking target, or T2 at which the first stereoscopic image satisfies the preset condition; when the stereoscopic display device is detected to track to the second tracking target, the second image acquisition device is instructed to acquire a second stereoscopic display image displayed by the stereoscopic display device; determining whether the second stereoscopic display image acquired by a second image acquisition device corresponding to the second position meets the preset condition; when the second stereoscopic display image is determined to meet the preset condition, recording a second moment, wherein the second moment is a moment T3 when the second stereoscopic display image meets the preset condition; calculating a difference of the T3 and the T1 or calculating a difference of the T3 and the T2, and determining the difference as a tracking permutation delay time. The evaluation device 200 determines the tracking effect of the stereoscopic display device according to the tracking arrangement delay time detected by the detection device.
For further detailed description of the detection device, please refer to the detection device of the first embodiment and the detection device of the second embodiment, which is not described herein again.
Embodiment IV
Referring to fig. 6, fig. 6 is a schematic flow chart illustrating a detection method according to a fourth embodiment of the invention. As shown in fig. 6, the detection method according to the fourth embodiment of the present invention detects the tracking alignment delay time of the stereoscopic display device. The detection method comprises the following steps:
s1, when detecting that the stereoscopic display device tracks a first tracking target at a first position, indicating an image acquisition device corresponding to the first position to acquire a first stereoscopic display image displayed by the stereoscopic display device;
s2, determining whether the first stereoscopic display image acquired by the image acquisition device corresponding to the first position meets a preset condition;
s3, when it is determined that the first stereoscopic display image satisfies the preset condition, instructing the stereoscopic display device to start tracking a second tracking target located at a second position and recording a first time T1 at which the stereoscopic display device starts tracking the second tracking target, or T2 at which the first stereoscopic image satisfies the preset condition;
s4, when the stereoscopic display device is detected to track the second tracking target, indicating the image acquisition device corresponding to the second position to acquire a second stereoscopic display image displayed by the stereoscopic display device;
s5, determining whether the second stereoscopic display image acquired by the image acquisition device corresponding to the second position meets the preset condition;
s6, when determining that the second stereo display image meets the preset condition, recording a second moment, wherein the second moment is a moment T3 when the second stereo display image meets the preset condition;
s7 calculating the difference between the T3 and the T1 or the difference between the T3 and the T2, determining the difference as a tracking mapping delay time;
wherein the first position is different from the second position.
In a specific embodiment, the detection method further comprises the following steps:
s8 instructing the stereoscopic display device to start tracking the second tracking target located at the second position and recording a third time, which is a time T4 at which the stereoscopic display device starts tracking the second tracking target;
s9 when it is detected that the stereoscopic display device has tracked the second tracking target and records a fourth time, which is a time T5 when the stereoscopic display device has tracked the second tracking target;
s10 calculates a difference between the T5 and the T4, and determines the difference as a tracking delay time.
Further, the detection method further comprises the following steps:
s11 instructing the second image capturing device to start capturing the second stereoscopic display image displayed by the stereoscopic display apparatus and recording a fifth time, which is a time T6 at which the second image capturing device starts capturing the second stereoscopic display image displayed by the stereoscopic display apparatus;
s12, determining whether the second stereoscopic display image acquired by the second image acquisition device corresponding to the second position meets the preset condition, and recording a sixth moment when the second stereoscopic display image meets the preset condition, wherein the sixth moment is a moment T7 when the second stereoscopic image meets the preset condition;
s13 calculates the difference between the T7 and the T6, and determines the difference as a scheduling delay time.
In one embodiment, the first tracking target includes a first infrared headband, the first infrared headband including: the first hair clasp body is arranged on the first hair clasp body and corresponds to the first infrared light-emitting device arranged on the first image acquisition device; the second tracking target includes: a second infrared headband, the second infrared headband comprising: the second hair clasp body is arranged on the second hair clasp body and corresponds to the second infrared light-emitting device arranged on the second image acquisition device.
Further, the first image acquisition device comprises a first camera for shooting a left eye image of the first stereoscopic display image and a second camera for shooting a right eye image of the first stereoscopic display image, and the first infrared light emitting device comprises a first infrared light emitting unit and a second infrared light emitting unit, wherein the first infrared light emitting unit corresponds to the first camera, and the second infrared light emitting unit corresponds to the second camera;
the second image acquisition device comprises a third camera and a fourth camera, the second infrared light-emitting device comprises a third infrared light-emitting unit and a fourth infrared light-emitting unit, wherein the third infrared light-emitting unit corresponds to the third camera, and the fourth infrared light-emitting unit corresponds to the fourth camera.
In another specific embodiment, the first tracking target includes: the first face model is provided with the first image acquisition device at the eye position of the first face model; the second tracking target includes: and the second image acquisition device is arranged at the position of the human eyes of the second face model. Further, the first image acquisition device comprises a fifth camera and a sixth camera, and the fifth camera and the sixth camera are respectively arranged at the left eye position and the right eye position of the human eye position of the first face model and are used for respectively shooting a left eye image and a right eye image of the first stereoscopic display image; the second image acquisition device comprises a seventh camera and an eighth camera, the seventh camera and the eighth camera are respectively arranged at the left eye position and the right eye position of the human eye position of the second face model, and the left eye image and the right eye image of the second stereoscopic display image are respectively shot.
The first stereoscopic display image and the second stereoscopic display image respectively comprise a left eye image and a right eye image, and whether a preset condition is met or not is determined in the following mode: a first current percentage of a number of pixels of a first pixel in the left eye image to a total number of pixels of the left eye image, a second current percentage of a number of pixels of a second pixel in the right eye image to the total number of pixels of the right eye image, wherein the first pixel is different from the second pixel;
and obtaining a value to be compared according to the first current percentage, the second current percentage and a preset relation between the first current percentage and the second current percentage, and judging whether the value to be compared is larger than or equal to a corresponding preset threshold value. The preset relationship is at least one of a sum, a product, a mean, or an extremum between the first current percentage and the second current percentage. The preset conditions are as follows: and the product of the first current percentage and the second current percentage is more than or equal to the corresponding preset threshold value.
The following details an example of determination as to whether or not the preset condition determination is satisfied:
the left eye image displayed by the stereoscopic display device is a first color image, the right eye image is a second color image, and the first color image is different from the second color image. Alternatively, when the first color image is one of red (R), green (G) and blue (B), the second color image is one of the remaining two of red (R), green (G) and blue (B), that is, the pixels are different. Here, the left-eye image is a red image and the right-eye image is a green image.
The first camera and the third camera respectively shoot left eye images, which are called as left cameras, and the second camera and the fourth camera respectively shoot right eye images, which are called as right cameras. If crosstalk occurs, the images shot by the left camera cannot be all red pixels, and partial green pixels exist; the image shot by the right camera is not all green pixels, and partial red pixels exist.
A comprehensive evaluation criterion P can be set0A comprehensive evaluation value P of the shot picture1And a comprehensive evaluation standard value P0Making a comparison if P1≥P0If the left camera shoots a full red picture, the right camera shoots a full green picture. Calculating P1There are two methods:
(1) and if the left camera and the right camera respectively shoot the red image and the green image displayed by the stereoscopic display equipment, the processing device respectively processes the red image and the green image. Here, the image captured by the left camera is counted by the number of red pixels, and the image captured by the right camera is counted by the number of green pixels.
Calculating the number of red pixels R1 and the number of green pixels G1 in the left eye image shot by the left camera, calculating the number of green pixels G2 and the number of red pixels R2 in the right eye image shot by the right camera, wherein the total number of pixels of the left eye image is the same as the total number of pixels of the right eye image and is M, and the comprehensive evaluation value P1 is (R1/M) × (G2/M), and then according to the set comprehensive evaluation standard value P0，P0The value range of (1) is 0-1. The specific values can be based on: the sensitivity of the camera to red and green and the parameters of external light and lens are set by the camera, for example: the light is too strong, the aperture of the lens is adjusted too large, the red shot is distorted, and the user can adjust the P value at the moment0The value of (c) is set smaller. If P1≥P0If the left camera shoots a full red picture, the right camera shoots a full green picture.
(2) If a non-black background exists in the left-eye image and the right-eye image, the calculated value of the red pixel or the green pixel is affected, so that the change of the number of the R or G pixels is increased, and the overall calculation result is affected. Therefore, for more accurate calculation of the number of R and B, the following calculation method may be adopted further including the steps of:
and a matting step, determining the region edge position of the shot picture image through the difference of the image pixel values, and then matting out the red image region in the left eye image and the green image region in the right eye image. Then calculating the number r1 of red pixels in the red image area, the number g1 of green pixels, the number g2 of green pixels in the green image area, the number r2 of red pixels, the number m of full-width sectional image pixels, and the comprehensive evaluation value P1 ═ r1/m (g2/m), and then according to the set comprehensive evaluation standard value P0，P0The value range of (1) is 0-1. If P1≥P0If the left camera shoots a full red picture, the right camera shoots a full green picture.
In addition, the method for determining whether the acquired stereoscopic display image satisfies the preset condition is not limited to the above method, and there are other various ways, for example: (1) after the image is converted into other formats, the image is calculated, such as RGB is converted into HSV and then the image is calculated; (2) the standard value (i.e. the total number of pixels in the whole image) is adjusted at any time according to the characteristics of the image, and then the ratio of the total number of pixels in the whole image of a single pixel is calculated.
The invention also provides a tracking effect evaluation method of the stereoscopic display equipment. The tracking effect evaluation method of the stereoscopic display device comprises the following steps: a detection method and an evaluation method; the detection method is the detection method described in the fourth embodiment, and please refer to the foregoing description specifically, which is not repeated herein. The evaluation method is used for evaluating the tracking effect of the three-dimensional display equipment according to the tracking arrangement delay time determined by the detection method.
Fifth embodiment
The present invention also provides a computer readable storage medium comprising a computer program for use in conjunction with a stereoscopic display device having a tracking device, a first image capture device, a first tracked target, a second image capture device, and a second tracked target. The computer program is executable by a processing device to perform the steps of:
s1, when detecting that the stereoscopic display device tracks a first tracking target at a first position, indicating an image acquisition device corresponding to the first position to acquire a first stereoscopic display image displayed by the stereoscopic display device;
s2, determining whether the first stereoscopic display image acquired by the image acquisition device corresponding to the first position meets a preset condition;
s3, when it is determined that the first stereoscopic display image satisfies the preset condition, instructing the stereoscopic display device to start tracking a second tracking target located at a second position and recording a first time T1 at which the stereoscopic display device starts tracking the second tracking target, or T2 at which the first stereoscopic image satisfies the preset condition;
s4, when the stereoscopic display device is detected to track the second tracking target, indicating the image acquisition device corresponding to the second position to acquire a second stereoscopic display image displayed by the stereoscopic display device;
s5, determining whether the second stereoscopic display image acquired by the image acquisition device corresponding to the second position meets the preset condition;
s6, when determining that the second stereo display image meets the preset condition, recording a second moment, wherein the second moment is a moment T3 when the second stereo display image meets the preset condition;
s7 calculating the difference between the T3 and the T1 or the difference between the T3 and the T2, determining the difference as a tracking mapping delay time; wherein the first position is different from the second position.
For further detailed description of the above steps, please refer to embodiment four, which is not repeated herein.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (20)

1. A detection apparatus for detecting a tracking alignment delay time of a stereoscopic display apparatus including a tracking device, the detection apparatus comprising:
the system comprises a first image acquisition device, a first tracking target, a second image acquisition device, a second tracking target and a processing device;
the first image acquisition device and the first tracking target are located at a first position, the second image acquisition device and the second tracking target are located at a second position, the first position is different from the second position, and the processing device is configured to:
when the stereoscopic display device is detected to track to the first tracking target, the first image acquisition device is instructed to acquire a first stereoscopic display image displayed by the stereoscopic display device;
determining whether the first stereoscopic display image acquired by the first image acquisition device meets a preset condition;
when it is determined that the first stereoscopic display image satisfies a preset condition, instructing the stereoscopic display device to start tracking the second tracking target located at the second position and recording a first time T1 at which the stereoscopic display device starts tracking the second tracking target, or T2 at which the first stereoscopic display image satisfies the preset condition;
when the stereoscopic display device is detected to track to the second tracking target, the second image acquisition device is instructed to acquire a second stereoscopic display image displayed by the stereoscopic display device;
determining whether the second stereoscopic display image acquired by a second image acquisition device corresponding to the second position meets the preset condition;
when it is determined that the second stereoscopic display image meets the preset condition, recording a second moment, where the second moment is a moment T3 when the second stereoscopic display image meets the preset condition;
calculating a difference of the T3 and the T1 or calculating a difference of the T3 and the T2, and determining the difference as a tracking permutation delay time;
the processing device is used for: instructing the stereoscopic display device to start tracking the second tracking target located at the second position again and recording a third time, which is a time T4 when the stereoscopic display device starts tracking the second tracking target;
when the stereoscopic display device is detected to track to the second tracking target, recording a fourth moment, wherein the fourth moment is a moment T5 when the stereoscopic display device tracks to the second tracking target;
calculating a difference of the T5 and the T4, and determining a difference of the T5 and the T4 as a tracking delay time.
2. A test device as claimed in claim 1, characterized in that: the processing device is used for: instructing the second image acquisition device to start acquiring a second stereoscopic display image displayed by the stereoscopic display device again and recording a fifth moment, wherein the fifth moment is a moment T6 at which the second image acquisition device starts acquiring the second stereoscopic display image displayed by the stereoscopic display device;
determining whether the second stereoscopic display image acquired by a second image acquisition device corresponding to the second position meets the preset condition, and recording a sixth moment when the second stereoscopic display image meets the preset condition, wherein the sixth moment is a moment T7 when the second stereoscopic display image meets the preset condition;
calculating a difference of the T7 and the T6, and determining a difference of the T7 and the T6 as a scheduling delay time.
3. The detection device of claim 1, wherein the first tracking target comprises a first infrared headband, the first infrared headband comprising: the first hair clasp body is arranged on the first hair clasp body and corresponds to the first infrared light-emitting device arranged on the first image acquisition device;
the second tracking target includes: a second infrared headband, the second infrared headband comprising: the second hair clasp body is arranged on the second hair clasp body and corresponds to the second infrared light-emitting device arranged on the second image acquisition device.
4. The inspection apparatus of claim 3, wherein the first image capturing device comprises a first camera for capturing a left eye image of the first stereoscopic display image and a second camera for capturing a right eye image of the first stereoscopic display image, and the first infrared light emitting device comprises a first infrared light emitting unit and a second infrared light emitting unit, wherein the first infrared light emitting unit corresponds to the first camera and the second infrared light emitting unit corresponds to the second camera;
the second image acquisition device comprises a third camera and a fourth camera, the third camera is used for shooting a left eye image of the second stereoscopic display image, the fourth camera is used for shooting a right eye image of the second stereoscopic display image, the second infrared light-emitting device comprises a third infrared light-emitting unit and a fourth infrared light-emitting unit, the third infrared light-emitting unit corresponds to the third camera, and the fourth infrared light-emitting unit corresponds to the fourth camera.
5. The detection device of claim 1, wherein the first tracking target comprises: the first face model is provided with the first image acquisition device at the eye position of the first face model; the second tracking target includes: and the second image acquisition device is arranged at the position of the human eyes of the second face model.
6. The detection apparatus according to claim 5, wherein the first image capturing device includes a fifth camera and a sixth camera, and the fifth camera and the sixth camera are respectively disposed at a left eye and a right eye of the human eye position of the first face model, and respectively capture a left eye image and a right eye image of the first stereoscopic display image; the second image acquisition device comprises a seventh camera and an eighth camera, the seventh camera and the eighth camera are respectively arranged at the left eye position and the right eye position of the human eye position of the second face model, and the left eye image and the right eye image of the second stereoscopic display image are respectively shot.
7. The detection apparatus according to claim 4 or 6, wherein whether the preset condition is satisfied is: calculating a first current percentage of the number of pixels of a first pixel in the left-eye image and the total number of pixels of the left-eye image, and calculating a second current percentage of the number of pixels of a second pixel in the right-eye image and the total number of pixels of the right-eye image, wherein the first pixel is a pixel in the left-eye image without crosstalk, the second pixel is a pixel in the right-eye image without crosstalk, and the first pixel is different from the second pixel;
and obtaining a value to be compared according to the first current percentage, the second current percentage and a preset relation between the first current percentage and the second current percentage, and judging whether the value to be compared is larger than or equal to a corresponding preset threshold value.
8. The detection device of claim 7, wherein the predetermined relationship is at least one of a sum, a product, a mean, or an extremum between the first current percentage and the second current percentage.
9. The detection device according to claim 8, wherein the preset condition is: and the product of the first current percentage and the second current percentage is more than or equal to the corresponding preset threshold value.
10. A detection apparatus for detecting a tracking alignment delay time of a stereoscopic display apparatus including a tracking device, the detection apparatus comprising:
the system comprises a first image acquisition device, a first tracking target, a second image acquisition device, a second tracking target and a processing device;
the first image capturing device and the first tracking target are located at a first position, the second image capturing device and the second tracking target are located at a second position, the first position is different from the second position, and the processing device includes:
the acquisition first stereoscopic display image indicating unit is used for indicating the first image acquisition device to acquire a first stereoscopic display image displayed by the stereoscopic display equipment when the stereoscopic display equipment is detected to track to the first tracking target;
the first judgment unit is used for determining whether the first stereoscopic display image acquired by the first image acquisition device meets a preset condition or not;
a first timing determination and recording unit configured to, when it is determined that the first stereoscopic display image satisfies a preset condition, instruct the stereoscopic display device to start tracking the second tracking target at the second position and record a first timing T1 at which the stereoscopic display device starts tracking the second tracking target, or a timing T2 at which the first stereoscopic display image satisfies the preset condition;
the acquisition second stereoscopic display image indicating unit is used for indicating the second image acquisition device to acquire a second stereoscopic display image displayed by the stereoscopic display equipment when the stereoscopic display equipment is detected to track to the second tracking target;
the second judging unit is used for determining whether the second stereoscopic display image acquired by the second image acquisition device corresponding to the second position meets the preset condition;
a second time determination and recording unit, configured to record a second time when it is determined that the second stereoscopic display image satisfies the preset condition, where the second time is a time T3 when the second stereoscopic display image satisfies the preset condition;
a calculation unit for calculating a difference value of the T3 and the T1 or calculating a difference value of the T3 and the T2, and determining the difference value as a tracking mapping delay time.
11. A tracking effect evaluation system of a stereoscopic display device, characterized by comprising: a detection device according to any one of claims 1 to 10 and an evaluation device for determining the tracking effect of the stereoscopic display device in accordance with the tracking profile delay time detected by the detection device.
12. A detection method for detecting a tracking scheduling delay time of a stereoscopic display device, the method comprising the steps of:
s1, when detecting that the stereoscopic display device tracks a first tracking target at a first position, indicating a first image acquisition device corresponding to the first position to acquire a first stereoscopic display image displayed by the stereoscopic display device;
s2, determining whether the first stereoscopic display image acquired by the first image acquisition device corresponding to the first position meets a preset condition;
s3, when it is determined that the first stereoscopic display image satisfies the preset condition, instructing the stereoscopic display device to start tracking a second tracking target located at a second position and recording a first time T1 at which the stereoscopic display device starts tracking the second tracking target, or T2 at which the first stereoscopic display image satisfies the preset condition;
s4, when the stereoscopic display device is detected to track the second tracking target, indicating a second image acquisition device corresponding to the second position to acquire a second stereoscopic display image displayed by the stereoscopic display device;
s5, determining whether the second stereoscopic display image acquired by the second image acquisition device corresponding to the second position meets the preset condition;
s6, when determining that the second stereoscopic display image meets the preset condition, recording a second moment, wherein the second moment is a moment T3 when the second stereoscopic display image meets the preset condition;
s7 calculating the difference between the T3 and the T1 or the difference between the T3 and the T2, determining the difference as a tracking mapping delay time;
wherein the first position is different from the second position.
13. The detection method of claim 12, further comprising the steps of:
s8 instructing the stereoscopic display device to start tracking the second tracking target located at the second position and recording a third time, which is a time T4 at which the stereoscopic display device starts tracking the second tracking target;
s9 when it is detected that the stereoscopic display device has tracked the second tracking target and records a fourth time, which is a time T5 when the stereoscopic display device has tracked the second tracking target;
s10 calculates the difference between the T5 and the T4, and determines the difference between the T5 and the T4 as a tracking delay time.
14. The detection method according to claim 12 or 13, characterized in that it further comprises the steps of:
s11 instructing the second image capturing device to start capturing the second stereoscopic display image displayed by the stereoscopic display apparatus and recording a fifth time, which is a time T6 at which the second image capturing device starts capturing the second stereoscopic display image displayed by the stereoscopic display apparatus;
s12, determining whether the second stereoscopic display image acquired by the second image acquisition device corresponding to the second position meets the preset condition, and recording a sixth moment when the second stereoscopic display image meets the preset condition, wherein the sixth moment is a moment T7 when the second stereoscopic display image meets the preset condition;
s13 calculates the difference between the T7 and the T6, and determines the difference between the T7 and the T6 as a scheduling delay time.
15. The detection method of claim 12, wherein the first tracked target comprises a first infrared headband, the first infrared headband comprising: the first hair clasp body is arranged on the first hair clasp body and corresponds to the first infrared light-emitting device arranged on the first image acquisition device; the second tracking target includes: a second infrared headband, the second infrared headband comprising: the second hair band body is arranged on the second hair band body and corresponds to the second infrared light-emitting device arranged on the second image acquisition device; the first image acquisition device comprises a first camera for shooting a left eye image of the first stereoscopic display image and a second camera for shooting a right eye image of the first stereoscopic display image, and the first infrared light-emitting device comprises a first infrared light-emitting unit and a second infrared light-emitting unit, wherein the first infrared light-emitting unit corresponds to the first camera, and the second infrared light-emitting unit corresponds to the second camera; the second image acquisition device comprises a third camera for shooting a left eye image of the second stereoscopic display image and a fourth camera for shooting a right eye image of the second stereoscopic display image, and the second infrared light-emitting device comprises a third infrared light-emitting unit and a fourth infrared light-emitting unit, wherein the third infrared light-emitting unit corresponds to the third camera, and the fourth infrared light-emitting unit corresponds to the fourth camera;
or;
the first tracking target includes: the first face model is provided with the first image acquisition device at the eye position of the first face model; the second tracking target includes: the second face model is provided with the second image acquisition device at the position of the eyes of the second face model; the first image acquisition device comprises a fifth camera and a sixth camera, the fifth camera and the sixth camera are respectively arranged at the left eye position and the right eye position of the human eye position of the first face model and are used for respectively shooting a left eye image and a right eye image of the first stereoscopic display image; the second image acquisition device comprises a seventh camera and an eighth camera, the seventh camera and the eighth camera are respectively arranged at the left eye position and the right eye position of the human eye position of the second face model, and the left eye image and the right eye image of the second stereoscopic display image are respectively shot.
16. The detection method according to claim 12, wherein the first stereoscopic display image and the second stereoscopic display image respectively include a left-eye image and a right-eye image, and whether the preset condition is satisfied means that: calculating a first current percentage of the number of pixels of a first pixel in the left-eye image and the total number of pixels of the left-eye image, and calculating a second current percentage of the number of pixels of a second pixel in the right-eye image and the total number of pixels of the right-eye image, wherein the first pixel is a pixel in the left-eye image without crosstalk, the second pixel is a pixel in the right-eye image without crosstalk, and the first pixel is different from the second pixel;
and obtaining a value to be compared according to the first current percentage, the second current percentage and a preset relation between the first current percentage and the second current percentage, and judging whether the value to be compared is larger than or equal to a corresponding preset threshold value.
17. The detection method of claim 16, wherein the predetermined relationship is at least one of a sum, a product, a mean, or an extremum between the first current percentage and the second current percentage.
18. The detection method according to claim 17, wherein the predetermined condition is: and the product of the first current percentage and the second current percentage is more than or equal to the corresponding preset threshold value.
19. A tracking effect evaluation method of a stereoscopic display device, the tracking effect evaluation method comprising: a detection method and an evaluation method; the detection method is the detection method according to any one of claims 12 to 18, and the evaluation method is to evaluate the tracking effect of the stereoscopic display device according to the tracking arrangement delay time determined by the detection method.
20. A computer readable storage medium comprising a computer program for use in conjunction with a stereoscopic display device having a tracking device, a first image capture device, a first tracked target, a second image capture device, a second tracked target, the computer program executable by a processing device to perform the steps of:
s1, when detecting that the stereoscopic display device tracks a first tracking target at a first position, indicating an image acquisition device corresponding to the first position to acquire a first stereoscopic display image displayed by the stereoscopic display device;
s2, determining whether the first stereoscopic display image acquired by the image acquisition device corresponding to the first position meets a preset condition;
s3, when it is determined that the first stereoscopic display image satisfies the preset condition, instructing the stereoscopic display device to start tracking a second tracking target located at a second position and recording a first time T1 at which the stereoscopic display device starts tracking the second tracking target, or T2 at which the first stereoscopic display image satisfies the preset condition;
s4, when the stereoscopic display device is detected to track the second tracking target, indicating the image acquisition device corresponding to the second position to acquire a second stereoscopic display image displayed by the stereoscopic display device;
s5 determining whether the second stereoscopic display image captured by the image capturing device corresponding to the second position satisfies the preset condition,
s6, when determining that the second stereoscopic display image meets the preset condition, recording a second moment, wherein the second moment is a moment T3 when the second stereoscopic display image meets the preset condition;
s7 calculating the difference between the T3 and the T1 or the difference between the T3 and the T2, determining the difference as a tracking mapping delay time;
wherein the first position is different from the second position.
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Citations (2)

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CN102497563A (en) * 2011-12-02 2012-06-13 深圳超多维光电子有限公司 Tracking-type autostereoscopic display control method, display control apparatus and display system
CN206341331U (en) * 2016-12-29 2017-07-18 深圳超多维光电子有限公司 Detection device and stereoscopic display device tracking effect evaluation system

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CN102497563A (en) * 2011-12-02 2012-06-13 深圳超多维光电子有限公司 Tracking-type autostereoscopic display control method, display control apparatus and display system
CN206341331U (en) * 2016-12-29 2017-07-18 深圳超多维光电子有限公司 Detection device and stereoscopic display device tracking effect evaluation system

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