CN112488994A - Motion characteristic detection method, device, equipment and storage medium of display equipment - Google Patents
Motion characteristic detection method, device, equipment and storage medium of display equipment Download PDFInfo
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Abstract
The application relates to a method and a device for detecting the motion characteristic of display equipment, computer equipment and a storage medium, which are used for acquiring a motion picture; acquiring pixel information on a moving path of an object in the moving picture; calculating motion trailing time and trailing ratio values according to the pixel information; and determining the motion characteristic of the display equipment by adopting a preset algorithm according to the motion tailing time and the tailing ratio value. By the method and the device for detecting the motion characteristic of the display equipment, the computer equipment and the storage medium, the motion characteristic of the display equipment can be detected more accurately.
Description
Technical Field
The present application relates to the field of display device technologies, and in particular, to a method and an apparatus for detecting motion characteristics of a display device, a computer device, and a storage medium.
Background
Generally, a display device has a tailing phenomenon when displaying a moving image, and if the tailing time is too long, the quality of an image displayed by a display is seriously affected.
Disclosure of Invention
The present application provides a method and an apparatus for detecting motion characteristics of a display device, a computer device and a storage medium, which can determine the motion characteristics of the display device more accurately.
In order to achieve the above object, the present application provides a motion characteristic detecting method of a display device, including the steps of:
acquiring a moving picture;
acquiring pixel information on a moving path of an object in the moving picture;
calculating motion trailing time and trailing ratio values according to the pixel information;
and determining the motion characteristic of the display equipment by adopting a preset algorithm according to the motion tailing time and the tailing ratio value.
Further, the step of calculating the motion-smear time and the smear ratio according to the pixel information includes:
acquiring brightness information and chrominance information in the pixel information;
calculating the motion trailing time according to the brightness information;
and calculating the dragging color ratio according to the chrominance information.
Further, the step of calculating the moving-trailing time according to the luminance information includes:
acquiring a first length of the object, and measuring a second length of an image different from a background in the moving image in a moving direction of the object;
calculating a trailing distance from the first length and the second length;
and acquiring a first moving speed of the object, and calculating the moving trailing time according to the trailing distance and the moving speed of the object.
Further, the step of acquiring a moving picture includes:
setting two objects which are separated by a preset distance in the display equipment;
adjusting a second moving speed of the object; causing the trailing of the object at a second speed of movement to cover the preset interval;
acquiring the moving picture by adopting a high-speed camera;
the step of calculating the moving-trailing time according to the luminance information includes:
acquiring the second moving speed, a preset distance and a display frame rate;
and calculating the motion trailing time according to the second moving speed, the display frame rate and the preset distance.
Further, the step of calculating the dragging ratio according to the chrominance information includes:
acquiring first RGB information of the object and second RGB information on a moving path of the object;
and calculating the dragging ratio according to the first RGB information and the second RGB information.
Further, the step of calculating the moving trailing time according to the second moving speed, the display frame rate, and the preset distance includes:
by the formula
Calculating the moving tail time; wherein t is the motion trailing time, v is the second moving speed, f is the display frame rate, d is the preset distance, and d is n pixels.
Further, the step of obtaining the luminance information and the chrominance information in the pixel information is preceded by:
the brightness information on the moving path of the object is calculated by the formula Lv of 0.2126R +0.7152G + 0.0722B.
The present application also provides a motion characteristic detecting device of a display apparatus, including:
a first acquisition unit configured to acquire a moving picture;
a second acquisition unit configured to acquire pixel information on a movement path of an object in the moving picture;
the calculating unit is used for calculating the motion trailing time and the trailing ratio value according to the pixel information;
and the determining unit is used for determining the motion characteristic of the display equipment by adopting a preset algorithm according to the motion tailing time and the tailing ratio value.
The present application further provides a computer device, including a memory and a processor, where the memory stores a computer program, and the processor implements the steps of the motion characteristic detection method for a display device according to any one of the above descriptions when executing the computer program.
The present application also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the motion characteristic detection method of the display device described in any one of the above.
According to the method, the device, the equipment and the storage medium for detecting the motion characteristics of the display equipment, the motion picture is obtained by combining a high-speed camera, the motion trailing time and the trailing ratio value are calculated by adopting a machine, human eyes are not required for observation, the test accuracy is improved, and the difference among tests caused by different testers is reduced; meanwhile, the evaluation of the dragging color is added, and the motion characteristic of the display equipment can be detected more accurately.
Drawings
FIG. 1 is a schematic diagram illustrating a method for detecting motion characteristics of a display device according to an embodiment of the present disclosure;
fig. 2 is a block diagram of a motion characteristic detecting apparatus of a display device according to an embodiment of the present application;
fig. 3 is a block diagram illustrating a structure of a computer device according to an embodiment of the present application.
The implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Referring to fig. 1, an embodiment of the present application provides a method for detecting motion characteristics of a display device, including the following steps:
step S1, acquiring a moving picture;
step S2, acquiring pixel information on the moving path of the object in the moving picture;
step S3, calculating the moving trailing time and trailing ratio value according to the pixel information;
and step S4, determining the motion characteristic of the display device by adopting a preset algorithm according to the motion trailing time and the trailing ratio value.
In this embodiment, as described in step S1, a moving picture is obtained, and specifically, the display device to be detected is placed in a darkroom environment, that is, an environment with a surface illuminance of less than 1 lux. Using a test tool (such as MovePICDX) in the display equipment to generate a uniform-speed moving image, and displaying the uniform-speed moving image in a full-screen mode; and erecting a high-speed camera at the upper end of the display equipment to ensure that the lens is vertical to the display equipment, and the area of the corresponding image module to be shot is just placed in the shooting range. The color of the object and the color area of the background can be set to be opposite colors or 50% brightness gray scale pictures.
As described in step S2, in the moving picture, if the object has a smear when moving, the moving picture is recorded by the high-resolution camera, and if the background is black and the object is white, the object has a smear when moving, so that the background of the moving path of the object is gray, and the pixel information on the moving path is obtained.
As described in the above steps S3-S4, the motion-tailing time, i.e., the time from generation to disappearance of the tailing, is calculated from the pixel information, the longer the motion-tailing time isAnd when the ratio is lower, the motion performance of the trailing color is better. According to a predetermined formula
And calculating the motion performance of the display device, wherein x is the motion tailing time, y is the tailing ratio value, z is the motion characteristic, and when the value of z is larger, the motion characteristic of the display device is better. In the embodiment, a high-speed camera is combined to obtain a moving picture, and a machine is adopted to calculate the moving tailing time and the tailing ratio value, so that human eyes are not required to observe, the test accuracy is improved, and the difference among tests caused by different testers is reduced; meanwhile, the evaluation of the dragging color is added, and the motion characteristic of the display equipment can be detected more accurately.
In an embodiment, the step S3 of calculating a motion-smear time and a smear ratio according to the pixel information includes:
step S31, acquiring luminance information and chrominance information in the pixel information;
step S32, calculating the moving trailing time according to the luminance information;
and step S33, calculating the dragging color ratio according to the chrominance information.
In this embodiment, the object is set to be red, the background is set to be white, the initial brightness of the background before the object does not move is measured by the luminance meter, the target brightness on the moving path of the object is measured again after the object starts to move, the target brightness is compared with the initial brightness, when the target brightness is smaller than the initial brightness, it is indicated that the display device trails, the brightness of a trailing area is obviously different from that of an un-trailing area, and the motion trails can be accurately calculated according to the brightness information. The dragging ratio value can be calculated according to the RGB value of the trailing area, the RGB almost comprises all colors which can be sensed by human vision, the dragging ratio value can be accurately calculated through the RGB, and when the ratio is smaller, the dragging is lighter. The technical scheme provided by the embodiment can more accurately determine the motion characteristic of the display equipment without observing according to naked eyes.
In an embodiment, the step S32 of calculating the moving-trailing time according to the brightness information includes:
a step S321 of acquiring a first length of the object, and measuring a second length of an image different from a background in the moving image in a moving direction of the object;
step S322, calculating a trailing distance according to the first length and the second length;
step S323, obtaining a first moving speed of the object, and calculating the moving trailing time according to the trailing distance and the object moving speed.
In this embodiment, the brightness on the moving path of the object is detected in real time, when the brightness is reduced, it indicates that the display device has a smear, and the photographing speed of the high-speed camera is adjusted, so that the moving picture taken by the high-speed camera can display the whole smear region. For example, the background is set to be black, the object is set to be white, the tail generated by the motion of the object appears to be a white area in human vision, the brightness of the white area is gradually reduced, the second length of the white area in the moving direction comprises the first length and the tail distance of the object, the tail distance is obtained by subtracting the first length from the second length, the tail distance is divided by the first moving speed of the object to be the motion tail time, and the longer the motion tail time is, the longer the time taken for the tail to disappear is indicated.
In one embodiment, the step S1 of acquiring a moving picture includes:
step S11, setting two objects separated by a preset distance in the display device;
step S12, adjusting a second moving speed of the object; causing the trailing of the object at a second speed of movement to cover the preset interval;
step S13, acquiring the moving picture with a high-speed camera;
the step S32 of calculating the moving-trailing time according to the luminance information includes:
step S32a, acquiring the second moving speed, the preset distance and the display frame rate;
step S32b, calculating the moving trailing time according to the second moving speed, the display frame rate, and the preset distance.
In this embodiment, two objects are disposed in the display device, the two objects are spaced by a predetermined distance, the two objects move at the same speed, in the displacement direction, the front end of the second object reaches the rear end of the first object, the speed of the object at that time is recorded, and the speed of the object at that time can be calculated by a formula
Calculating the moving tail time; wherein t is the motion tail time, v is the second moving speed, f is the display frame rate, d is the preset distance, and n is a multiple of 4, such as n-4, 8, 12 ·, and d ═ n pixels. Further, different numbers n can be selected to correspond to preset distances of 8, 16, 24 and 32, t1, t2, t3 and t4 are respectively calculated, an average value is taken as the moving trailing time, the smaller the moving trailing time is, the lighter the trailing is represented, and the better the moving characteristics of the display device are. Continuous photographing speed requirement of high-speed camera>2 ms/sheet, one or more sheets can be photographed.
In an embodiment, the step S33 of calculating the dragging ratio according to the chrominance information includes:
step S331, acquiring first RGB information of the object and second RGB information on the moving path of the object;
step S332, calculating the dragging ratio according to the first RGB information and the second RGB information.
In this embodiment, the second RGB information is obtained by calculating RGB information of a plurality of points, in the trailing region, in the moving direction of the object, RGB information of a preset number of position points is obtained, the intervals of the position points are equal, the arithmetic mean value of the RGB information of the position points is calculated to obtain the second RGB information, the first RGB information can be represented by (R1, G1, B1), and correspondingly, the second RGB information can be represented by (R2, G2, B2), and the formula is used to represent the first RGB information, the second RGB information, and the like
The values of the drag ratio on red, green and blue are calculated separately.
In an embodiment, the step of obtaining the luminance information and the chrominance information in the pixel information is preceded by:
the brightness information on the moving path of the object is calculated by the formula Lv of 0.2126R +0.7152G + 0.0722B.
In this embodiment, the luminance information is calculated by using a formula Lv of 0.2126R +0.7152G +0.0722B, and it can be determined whether the smear is generated or not by using the luminance information, that is, the first luminance information of the background can be calculated in advance by using the formula, when the object moves, the luminance information of a plurality of points on the moving path can be calculated by using the formula, an arithmetic mean value of the luminance information of the plurality of points is calculated as the second luminance information, the first luminance information and the second luminance information are compared, and if the first luminance information and the second luminance information are not equal, the smear is generated.
Referring to fig. 2, an embodiment of the present application further provides a motion characteristic detecting apparatus for a display device, including:
a first acquisition unit 10 for acquiring a moving picture;
a second acquiring unit 20 configured to acquire pixel information on a moving path of an object in the moving picture;
a calculating unit 30, configured to calculate a motion-smear time and a smear ratio value according to the pixel information;
and the determining unit 40 is configured to determine the motion characteristic of the display device by using a preset algorithm according to the motion tailing time and the tailing ratio value.
In one embodiment, the computing unit 30 comprises
The first acquisition subunit is used for acquiring the brightness information and the chrominance information in the pixel information;
a first calculating subunit, configured to calculate the moving-trailing time according to the luminance information;
and the second calculating subunit is used for calculating the dragging color ratio according to the chrominance information.
In one embodiment, the first computing subunit includes:
a first acquisition module, configured to acquire a first length of the object, and measure a second length of an image of the moving image different from the background in a moving direction of the object;
a determining module for calculating a trailing distance from the first length and the second length;
and the first calculation module is used for acquiring a first moving speed of the object and calculating the moving trailing time according to the trailing distance and the object moving speed.
In an embodiment, the first obtaining unit 10 includes:
the display device comprises a setting subunit, a display unit and a control unit, wherein the setting subunit is used for setting two objects which are separated by a preset distance in the display device;
an adjusting subunit, configured to adjust a second moving speed of the object; causing the trailing of the object at a second speed of movement to cover the preset interval;
a second acquisition subunit configured to acquire the moving picture with a high-speed camera;
the first computing subunit includes:
the second acquisition module is used for acquiring the second moving speed, the preset distance and the display frame rate;
and the second calculation module is used for calculating the motion trailing time according to the second moving speed, the display frame rate and the preset distance.
In one embodiment, the second computing subunit includes:
the third acquisition module is used for acquiring the first RGB information of the object and the second RGB information on the moving path of the object;
and the third calculating module is used for calculating the color dragging ratio according to the first RGB information and the second RGB information.
In one embodiment, the second calculation module includes:
a first calculation submodule for passing through a formula
Calculating the moving tail time; wherein t is the motion trailing time, v is the second moving speed, f is the display frame rate, d is the preset distance, and d is n pixels.
In an embodiment, the computing unit 30 further includes:
a second calculating sub-module for calculating the brightness information on the object moving path by the formula Lv of 0.2126R +0.7152G + 0.0722B.
In this embodiment, please refer to the method embodiment for specific implementation of the above units, sub-units, modules, and sub-modules, which will not be described herein again.
Referring to fig. 3, a computer device, which may be a server and whose internal structure may be as shown in fig. 3, is also provided in the embodiment of the present application. The computer device includes a processor, a memory, a network interface, and a database connected by a system bus. Wherein the computer designed processor is used to provide computational and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The database of the computer device is used for storing moving pictures and the like. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a method of motion characteristic detection for a display device.
Those skilled in the art will appreciate that the architecture shown in fig. 3 is only a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects may be applied.
An embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored, the computer program, when executed by a processor, implementing a method for detecting motion characteristics of a display device.
In summary, the moving picture is obtained for the method, the apparatus, the device and the storage medium for detecting the motion characteristic of the display device provided in the embodiment of the present application; acquiring pixel information on a moving path of an object in the moving picture; calculating motion trailing time and trailing ratio values according to the pixel information; and determining the motion characteristic of the display equipment by adopting a preset algorithm according to the motion tailing time and the tailing ratio value. By the method and the device for detecting the motion characteristics of the display equipment, the computer equipment and the storage medium, the motion picture is obtained by combining a high-speed camera, the motion trailing time and the trailing ratio value are calculated by adopting a machine, human eyes are not required to observe, the test accuracy is improved, and the difference among tests caused by different testers is reduced; meanwhile, the evaluation of the dragging color is added, and the motion characteristic of the display equipment can be detected more accurately.
It will be understood by those skilled in the art that all or part of the processes of the methods of the above embodiments may be implemented by hardware associated with instructions of a computer program, which may be stored on a non-volatile computer-readable storage medium, and when executed, may include processes of the above embodiments of the methods. Any reference to memory, storage, database, or other medium provided herein and used in the examples may include non-volatile and/or volatile memory. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), double-rate SDRAM (SSRSDRAM), Enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, apparatus, article, or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, apparatus, article, or method. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, apparatus, article, or method that includes the element.
The above description is only for the preferred embodiment of the present application and not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application, or which are directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present application.
Claims (10)
1. A motion characteristic detection method of a display device, comprising the steps of:
acquiring a moving picture;
acquiring pixel information on a moving path of an object in the moving picture;
calculating motion trailing time and trailing ratio values according to the pixel information;
and determining the motion characteristic of the display equipment by adopting a preset algorithm according to the motion tailing time and the tailing ratio value.
2. The method according to claim 1, wherein the step of calculating a motion smear time and a smear color ratio from the pixel information includes:
acquiring brightness information and chrominance information in the pixel information;
calculating the motion trailing time according to the brightness information;
and calculating the dragging color ratio according to the chrominance information.
3. The method according to claim 2, wherein the calculating the moving-trailing time from the luminance information includes:
acquiring a first length of the object, and measuring a second length of an image different from a background in the moving image in a moving direction of the object;
calculating a trailing distance from the first length and the second length;
and acquiring a first moving speed of the object, and calculating the moving trailing time according to the trailing distance and the moving speed of the object.
4. The method of detecting motion characteristics of a display device according to claim 2, wherein the step of obtaining a motion picture includes:
setting two objects which are separated by a preset distance in the display equipment;
adjusting a second moving speed of the object; causing the trailing of the object at a second speed of movement to cover the preset interval;
acquiring the moving picture by adopting a high-speed camera;
the step of calculating the moving-trailing time according to the luminance information includes:
acquiring the second moving speed, a preset distance and a display frame rate;
and calculating the motion trailing time according to the second moving speed, the display frame rate and the preset distance.
5. The method of claim 2, wherein the step of calculating the dragging ratio according to the chrominance information comprises:
acquiring first RGB information of the object and second RGB information on a moving path of the object;
and calculating the dragging ratio according to the first RGB information and the second RGB information.
6. The method according to claim 4, wherein the step of calculating the motion trailing time according to the second moving speed, a display frame rate, and a preset distance includes:
by the formula
Calculating the moving tail time; wherein t is the motion trailing time, v is the second moving speed, f is the display frame rate, d is the preset distance, and d is n pixels.
7. The method of detecting motion characteristics of a display device according to claim 2, wherein the step of acquiring luminance information and chrominance information in the pixel information is preceded by:
the brightness information on the moving path of the object is calculated by the formula Lv of 0.2126R +0.7152G + 0.0722B.
8. A motion characteristic detection apparatus of a display device, comprising:
a first acquisition unit configured to acquire a moving picture;
a second acquisition unit configured to acquire pixel information on a movement path of an object in the moving picture;
the calculating unit is used for calculating the motion trailing time and the trailing ratio value according to the pixel information;
and the determining unit is used for determining the motion characteristic of the display equipment by adopting a preset algorithm according to the motion tailing time and the tailing ratio value.
9. A computer device comprising a memory and a processor, the memory having stored therein a computer program, characterized in that the processor, when executing the computer program, implements the steps of the motion characteristic detection method of the display device according to any one of claims 1 to 7.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method for detecting motion characteristics of a display device according to any one of claims 1 to 7.
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| CN111340730A (en) * | 2020-02-26 | 2020-06-26 | Oppo广东移动通信有限公司 | Smear phenomenon eliminating method, terminal and storage medium |
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