CN110636275A - Immersive projection system and method - Google Patents
Immersive projection system and method Download PDFInfo
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- CN110636275A CN110636275A CN201910905674.9A CN201910905674A CN110636275A CN 110636275 A CN110636275 A CN 110636275A CN 201910905674 A CN201910905674 A CN 201910905674A CN 110636275 A CN110636275 A CN 110636275A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/10—Processing, recording or transmission of stereoscopic or multi-view image signals
- H04N13/106—Processing image signals
- H04N13/122—Improving the 3D impression of stereoscopic images by modifying image signal contents, e.g. by filtering or adding monoscopic depth cues
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/20—Image signal generators
- H04N13/296—Synchronisation thereof; Control thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/363—Image reproducers using image projection screens
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/398—Synchronisation thereof; Control thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N2013/0074—Stereoscopic image analysis
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Abstract
The invention discloses an immersive projection system and method, which comprises the steps of acquiring an actual display image when a projection image is projected on a hemispherical projection area by a projection module in real time through a feedback camera module, processing the acquired display image through a control module, extracting an actual coordinate value of a set point in the display image, calculating a difference value between an ideal coordinate value of the set point and the actual coordinate value of the set point to obtain a coordinate deviation value, and finally obtaining attitude adjustment data, wherein the adjustment module performs attitude adjustment on the projection module according to the attitude adjustment data to enable the actual coordinate value of the set point on the display image to be matched with the ideal coordinate value of the set point. Thereby guarantee that the projection effect can effectively promote, give better visual experience of visitor.
Description
Technical Field
The invention relates to the technical field of laser projection, in particular to an immersive projection system and method.
Background
The existing 3d projection experience systems mostly adopt arc-shaped curtains to improve the stereoscopic effect, and emerging spherical curtains are dome-shaped structures. The dome screen is hemispherical, the audience is surrounded by the dome screen, and the dome screen has a dome-shaped appearance, so that the image of the dome screen is large and clear, extends from the front of the audience to the back of the audience and is accompanied with stereo ring tones, and the scene effect of the audience is very strong when the audience is placed in the dome screen. The ball curtain is made of soft materials (PVC) and can be made into an inflatable ball curtain, namely an air film building, and the diameter can be more than 15 meters. The existing air film building mainly comprises a film body and an anchoring device fixed on the edge of the film body, wherein the film body utilizes intelligent electromechanical equipment to provide internal air pressurization so as to support the film body to form a building structure.
The existing 3d projection experience system needs a plurality of ultra-clear laser projectors to be matched according to different projection angles for bringing the effect of stereo projection, so that high-definition shadow seamless connection is directly put on the hemispherical arc curtain. In the process of actually installing and adjusting the ultra-clear laser projector, the projection angle of the ultra-clear laser projector needs to be finely adjusted according to actual conditions so as to ensure the quality of a projection picture. And according to different projection pictures, the ultra-clear laser projector also needs to be adjusted in real time according to the projection pictures in the process of projecting the pictures. The existing projection system is difficult to achieve the point, so that the projection effect is poor.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an immersion type projection system and method, which can automatically adjust the posture of an ultra-clear laser projector according to different projection images in the projection process, so that the projection effect on a hemispherical projection area is better.
The invention solves the technical problems by the following technical means:
an immersive projection system comprises a projection module, an adjusting module, a control module and a feedback camera module;
the projection module is used for projecting the projection image onto the hemispherical projection area;
the feedback camera module is used for acquiring a display image on the hemispherical projection area;
the control module is used for processing the display image to obtain an actual coordinate value of a set point on the display image, calculating a coordinate deviation value according to the actual coordinate value of the set point and an ideal coordinate value of the set point, and obtaining attitude adjustment data according to the coordinate deviation value;
the adjusting module is used for carrying out attitude adjustment on the projection module according to the attitude adjustment data so as to enable the actual coordinate value of the set point on the display image to be matched with the ideal coordinate value of the set point.
Further, projection module include the host computer and with a plurality of super clear laser projector that the host computer is connected, the host computer is used for the storage the projection image and for every super clear laser projector distributes the projection image region, and is a plurality of super clear laser projector cooperation is carried out seamless joint directly on spherical screen with the projection image and is put in the show.
Further, the feedback camera module comprises a plurality of cameras which are distributed at the center of the hemispherical projection area in a circumferential array manner, and the plurality of cameras are combined to form comprehensive coverage on the hemispherical projection area so as to obtain all display images on the hemispherical projection area; and the coordinate and the camera shooting angle of each camera are fixed.
Further, the control module specifically includes: the system comprises an image segmentation unit, an image feature extraction unit, a coordinate deviation value calculation unit and an attitude adjustment data generation unit;
the image segmentation unit is used for segmenting the display image into a plurality of different image areas according to coordinate grid lines;
the image feature extraction unit is used for extracting image features in each image area to identify a set point on the display image and obtain an actual coordinate value of the set point;
the coordinate deviation value calculating unit is used for calculating a difference value between an ideal coordinate value of a set point and an actual coordinate value of the set point to obtain a coordinate deviation value;
and the attitude adjustment data generation unit is used for generating attitude adjustment data according to the coordinate deviation value.
Further, the set point is provided in plurality.
Further, the adjustment module include a plurality of with super clear laser projector's adjustment seat of one-to-one, the adjustment seat includes microcontroller, lifting unit, sets up rotary part on the lifting unit and sets up pitching member on the rotary part, super clear laser projector sets up on the pitching member, microcontroller with control module signal connection is used for the basis gesture adjustment data control lifting unit, rotary part and pitching member motion.
Further, the lifting component comprises a base and a stepping electric push rod arranged on the base; the rotating part comprises a movable seat and a first steering engine arranged on the movable seat, and the movable seat is arranged at the top end of the stepping electric push rod; the pitching component comprises a U-shaped seat and a second steering engine arranged on one side of the U-shaped seat, the U-shaped seat is arranged on the first steering engine, and the ultra-clear laser projector is rotatably arranged in the U-shaped seat and is connected with the second steering engine; step-by-step electric putter, first steering wheel and second steering wheel all with microcontroller signal connection.
Furthermore, the hemispherical projection area is formed by an environment-friendly air film which is hemispherical and buckled on the ground.
In another aspect, the present invention further provides a projection method, which is suitable for the immersive projection system, and includes the following steps:
providing a projection image, and projecting the projection image onto a hemispherical projection area by a projection module;
acquiring a display image on the hemispherical projection area;
processing the display image to obtain an actual coordinate value of a set point on the display image, calculating a coordinate deviation value according to the actual coordinate value of the set point and an ideal coordinate value of the set point, and obtaining attitude adjustment data according to the coordinate deviation value;
and carrying out attitude adjustment on the projection module according to the attitude adjustment data so as to enable the actual coordinate value of the set point on the display image to be matched with the ideal coordinate value of the set point.
Further, the processing the display image to obtain an actual coordinate value of a set point on the display image, and calculating a coordinate deviation value according to the actual coordinate value of the set point and the ideal coordinate value of the set point, and obtaining attitude adjustment data from the coordinate deviation value specifically includes:
dividing the display image into a plurality of different image areas according to coordinate grid lines;
extracting image features in each image area to identify a set point on the display image and obtain actual coordinate values of the set point;
calculating a difference value between the ideal coordinate value of the set point and the actual coordinate value of the set point to obtain a coordinate deviation value;
and generating attitude adjustment data according to the coordinate deviation value.
The invention has the beneficial effects that: the immersive projection system and the immersive projection method of the invention acquire an actual display image when the projection module projects a projection image on a hemispherical projection area in real time through the feedback camera module, process the acquired display image through the control module, extract an actual coordinate value of a set point in the display image, calculate a difference value between an ideal coordinate value of the set point and the actual coordinate value of the set point, obtain a coordinate deviation value, and finally obtain attitude adjustment data, and perform attitude adjustment on the projection module by the adjustment module according to the attitude adjustment data, so that the actual coordinate value of the set point on the display image is matched with the ideal coordinate value of the set point. Thereby guarantee that the projection effect can effectively promote, give better visual experience of visitor.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic diagram of an immersive projection system according to an embodiment of the present invention;
fig. 2 is a schematic view of an arrangement structure of a camera of an immersive projection system according to an embodiment of the present invention;
FIG. 3 is a first schematic structural diagram of an adjustment module of an immersion projection system according to an embodiment of the present invention;
FIG. 4 is a second schematic structural diagram of an adjustment module of an immersion type projection system according to an embodiment of the present invention;
fig. 5 is a third schematic structural diagram of an adjustment module of an immersion type projection system according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
As shown in fig. 1, an immersive projection system of the present invention includes a projection module 101, an adjustment module 102, a control module 103, and a feedback camera module 104;
the projection module 101 is used for projecting the projection image onto a hemispherical projection area;
the feedback camera module 104 is used for acquiring a display image on the hemispherical projection area;
the control module 103 is configured to process the display image to obtain an actual coordinate value of a set point on the display image, calculate a coordinate deviation value according to the actual coordinate value of the set point and the ideal coordinate value of the set point, and obtain attitude adjustment data from the coordinate deviation value;
the adjusting module 102 is configured to perform pose adjustment on the projection module 101 according to the pose adjustment data, so that an actual coordinate value of a set point on the display image matches an ideal coordinate value of the set point.
Specifically, projection module 101 includes host computer and a plurality of super clear laser projector 1 of being connected with the host computer, and the host computer is used for storing the projection image and for every super clear laser projector 1 distribution projection image region, and the cooperation of a plurality of super clear laser projector 1 is carried out the seamless direct input show of joining in marriage the projection image on spherical screen completely. Each ultra-clear laser projector 1 is arranged at different positions in the hemispherical projection area 3 in advance, an image projected by each ultra-clear laser projector 1 is a part of a projected image, and images projected by all the ultra-clear laser projectors 1 on the spherical screen are seamlessly spliced to form a complete projected image.
As shown in fig. 2, the feedback camera module 104 includes a plurality of cameras 2 distributed in a circumferential array at the center of the hemispherical projection area 3, and the plurality of cameras 2 are combined to form a complete coverage on the hemispherical projection area 3 so as to obtain all display images on the hemispherical projection area 3; wherein the coordinates and camera angle of each camera 2 are fixed. Every camera 2 shoots the image of a certain position on the hemisphere projection area 3 of definite position and definite angle, all cameras 2 accomplish the comprehensive cover in the hemisphere projection area 3, and the photo that every camera was shot does not overlap each other, thereby split the display image on the hemisphere projection area 3, every camera 2 only is responsible for shooing the part image, thereby guarantee the definition that every camera 2 shot the image, be convenient for control module 103 carries out feature recognition to the picture that camera 2 shot.
Specifically, the control module 103 specifically includes: the system comprises an image segmentation unit, an image feature extraction unit, a coordinate deviation value calculation unit and an attitude adjustment data generation unit;
the image segmentation unit is used for segmenting the display image into a plurality of different image areas according to the coordinate grid lines;
the image feature extraction unit is used for extracting image features in each image area so as to position a set point of the display image and obtain coordinate values of the set point of the display image;
the coordinate deviation value calculation unit is used for calculating a difference value between the ideal coordinate value of the set point and the actual coordinate value of the set point to obtain a coordinate deviation value;
and the attitude adjustment data generation unit is used for generating attitude adjustment data according to the coordinate deviation value.
The set point can be provided in a plurality of numbers, the image feature extraction unit only needs to identify one of the set points, and the set point is an image feature point, which can be a marked special image in the projection image or other image features easy to be identified by image identification software. After the hemispherical projection area is built, a designer can set up a coordinate system in the control module 103 for the hemispherical projection area, and record the coordinates of each ultra-clear laser projector 1 in the hemispherical projection area and the coordinates of all the cameras 2, and when the optimal projection position of each projection image in the hemispherical projection area is stored in the control module 103, the coordinate value of each set point on each display image in the hemispherical projection area, that is, the ideal coordinate value of each set point, that is, when each set point on each display image is located at the ideal coordinate point during projection, the projection effect at this time is the best. The ideal coordinate values for each set point are calculated by the computer.
As shown in fig. 3-5, the adjusting module 102 includes a plurality of adjusting seats 4 corresponding to the ultraclean laser projectors 1 one by one, each adjusting seat 4 includes a microcontroller 5, a lifting component 6, a rotating component 7 disposed on the lifting component 6, and a pitching component 8 disposed on the rotating component 7, the ultraclean laser projector 1 is disposed on the pitching component 8, the microcontroller 5 is in signal connection with the control module 103, and is configured to control the lifting component 6, the rotating component 7, and the pitching component 8 to move according to the attitude adjustment data, and the microcontroller 5 may select a PLC or a single chip microcomputer. Specifically, the lifting component 6 comprises a base 61 and a stepping electric push rod 62 arranged on the base 61; the rotating component 7 comprises a movable seat 71 and a first steering engine 72 arranged on the movable seat 71, and the movable seat 71 is arranged at the top end of the stepping electric push rod 62; the pitching component 8 comprises a U-shaped seat 81 and a second steering engine 82 arranged on one side of the U-shaped seat 81, the U-shaped seat 81 is arranged on the first steering engine 72, and the ultraclean laser projector 1 is rotatably arranged in the U-shaped seat 81 and is connected with the second steering engine 82; the stepping electric push rod 62, the first steering engine 72 and the second steering engine 82 are in signal connection with the microcontroller 5. The stepping electric push rod 62 is used for adjusting the height of the ultra-clear laser projector 1, the first steering gear 72 is used for adjusting the left-right rotation angle of the ultra-clear laser projector 1, and the second steering gear 82 is used for adjusting the pitching projection angle of the ultra-clear laser projector 1.
The hemispherical projection area 3 is formed by an environment-friendly air film which is hemispherical and buckled on the ground, the environment-friendly air film is convenient to manufacture, install and disassemble, the assembling and building time is saved, and the labor is saved.
On the other hand, an embodiment of the present invention further provides a projection method, which is suitable for the immersive projection system, and includes the following steps:
providing a projection image, and projecting the projection image onto a hemispherical projection area by a projection module;
acquiring a display image on the hemispherical projection area;
processing the display image to obtain an actual coordinate value of a set point on the display image, calculating a coordinate deviation value according to the actual coordinate value of the set point and an ideal coordinate value of the set point, and obtaining attitude adjustment data according to the coordinate deviation value;
and performing attitude adjustment on the projection module according to the attitude adjustment data so that the actual coordinate value of the set point on the display image is matched with the ideal coordinate value of the set point.
Further, processing the display image to obtain an actual coordinate value of a set point on the display image, calculating a coordinate deviation value according to the actual coordinate value of the set point and the ideal coordinate value of the set point, and obtaining attitude adjustment data from the coordinate deviation value, specifically comprising:
dividing a display image into a plurality of different image areas according to coordinate grid lines;
extracting image features in each image area to identify a set point on the display image and obtain actual coordinate values of the set point;
calculating a difference value between the ideal coordinate value of the set point and the actual coordinate value of the set point to obtain a coordinate deviation value;
and generating attitude adjustment data according to the coordinate deviation value.
To sum up, the immersive projection system and the immersive projection method provided in the embodiments of the present invention obtain an actual display image of the projection image projected on the hemispherical projection area by the projection module in real time through the feedback camera module, process the obtained display image through the control module, extract an actual coordinate value of the set point in the display image, calculate a difference between an ideal coordinate value of the set point and the actual coordinate value of the set point, obtain a coordinate deviation value, and finally obtain attitude adjustment data, and perform attitude adjustment on the projection module according to the attitude adjustment data by the adjustment module, so that the actual coordinate value of the set point on the display image matches with the ideal coordinate value of the set point. Thereby guarantee that the projection effect can effectively promote, give better visual experience of visitor.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (10)
1. An immersive projection system, comprising: the device comprises a projection module, an adjusting module, a control module and a feedback camera module;
the projection module is used for projecting the projection image onto the hemispherical projection area;
the feedback camera module is used for acquiring a display image on the hemispherical projection area;
the control module is used for processing the display image to obtain an actual coordinate value of a set point on the display image, calculating a coordinate deviation value according to the actual coordinate value of the set point and an ideal coordinate value of the set point, and obtaining attitude adjustment data according to the coordinate deviation value;
the adjusting module is used for carrying out attitude adjustment on the projection module according to the attitude adjustment data so as to enable the actual coordinate value of the set point on the display image to be matched with the ideal coordinate value of the set point.
2. An immersive projection system according to claim 1, wherein: projection module include the host computer and with a plurality of super clear laser projector (1) that the host computer is connected, the host computer is used for the storage the projection image and for every super clear laser projector (1) distribution projection image region is a plurality of super clear laser projector (1) cooperation is with the projection image complete carry out seamless joint on spherical screen and directly put in the show.
3. An immersive projection system according to claim 1, wherein: the feedback camera module comprises a plurality of cameras (2) which are distributed in the spherical center position of the hemispherical projection area (3) in a circumferential array mode, and the plurality of cameras (2) are combined to form overall coverage on the hemispherical projection area (3) so as to obtain all display images on the hemispherical projection area (3); and the coordinate and the camera shooting angle of each camera (2) are fixed.
4. The immersive projection system of claim 1, wherein the control module comprises: the system comprises an image segmentation unit, an image feature extraction unit, a coordinate deviation value calculation unit and an attitude adjustment data generation unit;
the image segmentation unit is used for segmenting the display image into a plurality of different image areas according to coordinate grid lines;
the image feature extraction unit is used for extracting image features in each image area to identify a set point on the display image and obtain an actual coordinate value of the set point;
the coordinate deviation value calculating unit is used for calculating a difference value between an ideal coordinate value of a set point and an actual coordinate value of the set point to obtain a coordinate deviation value;
and the attitude adjustment data generation unit is used for generating attitude adjustment data according to the coordinate deviation value.
5. An immersive projection system according to claim 4, wherein: the set point is provided in plurality.
6. An immersive projection system according to claim 2, wherein: the adjusting module comprises a plurality of adjusting seats (4) in one-to-one correspondence with the ultra-clear laser projectors (1), each adjusting seat (4) comprises a microcontroller (5), a lifting component (6), a rotating component (7) arranged on the lifting component (6) and a pitching component (8) arranged on the rotating component (7), the ultra-clear laser projectors (1) are arranged on the pitching component (8), and the microcontrollers (5) are in signal connection with the control module and used for controlling the lifting component (6), the rotating component (7) and the pitching component (8) to move according to the attitude adjusting data.
7. An immersive projection system according to claim 6, wherein: the lifting component (6) comprises a base (61) and a stepping electric push rod (62) arranged on the base (61); the rotating part (7) comprises a movable seat (71) and a first steering engine (72) arranged on the movable seat (71), and the movable seat (71) is arranged at the top end of the stepping electric push rod (62); the pitching component (8) comprises a U-shaped seat (81) and a second steering engine (82) arranged on one side of the U-shaped seat (81), the U-shaped seat (81) is arranged on the first steering engine (72), and the ultra-clear laser projector (1) is rotatably arranged in the U-shaped seat (81) and is connected with the second steering engine (82); the stepping electric push rod (62), the first steering engine (72) and the second steering engine (82) are in signal connection with the microcontroller (5).
8. An immersive projection system according to claim 1, wherein: the hemispherical projection area (3) is formed by an environment-friendly air film which is hemispherical and buckled on the ground.
9. A projection method suitable for use in an immersive projection system as claimed in any of claims 1 to 8, comprising the steps of:
providing a projection image, and projecting the projection image onto a hemispherical projection area by a projection module;
acquiring a display image on the hemispherical projection area;
processing the display image to obtain an actual coordinate value of a set point on the display image, calculating a coordinate deviation value according to the actual coordinate value of the set point and an ideal coordinate value of the set point, and obtaining attitude adjustment data according to the coordinate deviation value;
and carrying out attitude adjustment on the projection module according to the attitude adjustment data so as to enable the actual coordinate value of the set point on the display image to be matched with the ideal coordinate value of the set point.
10. The projection method of claim 9, wherein: the processing the display image to obtain an actual coordinate value of a set point on the display image, calculating a coordinate deviation value according to the actual coordinate value of the set point and an ideal coordinate value of the set point, and obtaining attitude adjustment data from the coordinate deviation value specifically includes:
dividing the display image into a plurality of different image areas according to coordinate grid lines;
extracting image features in each image area to identify a set point on the display image and obtain actual coordinate values of the set point;
calculating a difference value between the ideal coordinate value of the set point and the actual coordinate value of the set point to obtain a coordinate deviation value;
and generating attitude adjustment data according to the coordinate deviation value.
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| CN114987333A (en) * | 2022-05-25 | 2022-09-02 | 吉林大学 | Mobile triangular warning board for smart car |
| CN116932978A (en) * | 2023-09-18 | 2023-10-24 | 长春希达电子技术有限公司 | Spherical screen splicing flatness evaluation method |
| CN117577015A (en) * | 2023-08-18 | 2024-02-20 | 长春希达电子技术有限公司 | Method, system, computer equipment and medium for correcting bright and dark lines of spherical LED display screen |
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