A multi-image sensor automatic calibration interactive projection system and its implementation method
An image sensor and interactive projection technology, applied in the field of interactive projection recognition, can solve the problems of inconsistency between the output position and the interactive position, increase the time of image processing and recognition, and limit the size of the identifiable projection screen.
Active Publication Date: 2022-06-24
大庆思特传媒科技有限公司
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[0005] However, in the prior art, because a single camera cannot cover the projection screen in a large scene, the size of the recognizable projection screen is limited; in the case of a wide-angle camera, the camera image has a large distortion, and manual debugging is based on the projection screen When the projection screen and the coordinate transformation of the camera image are carried out by multiple reference points evenly distributed in the horizontal and vertical directions, it is easy to have the problem that the output position is inconsistent with the interactive position.
Increasing the resolution of the camera will improve the accuracy of identifying the location of the interaction, but it will correspondingly increase the time of image processing and recognition, reducing the real-time performance of the interaction
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[0039] This embodiment takes a system composed of 4 projectors, 4 image sensors, and 4 groups of infrared light emitters as an example (such as figure 1 and figure 2 ).
[0040]The basic idea of the present invention is that the system is composed of a plurality of image sensors with switchable filters, a plurality of projectors, a plurality of groups of infrared light emitters, a computer host and other parts. The computer host connects multiple projectors to project images to the wall in the interactive scene, and splices and fuses the projected images through third-party projection fusion software; and then installs multiple image sensors connected to the computer host under the corresponding projectors to face the projected image. , and install each group of infrared light emitters outside the area corresponding to the projection screen, with its optical axis parallel to the projection screen and covering its projection area; the interactive projection recognition soft...
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An automatic calibration interactive projection system of multiple image sensors and its implementation method of the present invention relate to the technical field of interactive projection recognition. The host computer of the system is connected to a projector to project images to the wall, and the projection images are spliced and fused; Install under the corresponding projector, and install each group of infrared light emitters outside the area corresponding to the projection screen; the recognition software collects the images of each image sensor in real time, and stitches the images according to their corresponding positional relationship with the projector At the same time, the structured light based on the Gray code mode is used to automatically calibrate the coordinates of the recognition area corresponding to each image sensor, and then identify the interactive position of the touch in the projection area, and convert the coordinates of the image recognition point into the corresponding projection screen through the coordinate calibration mapping relationship. Position coordinates, send the coordinates of the interactive screen to the interactive projection effect software, and then realize the real-time multi-touch interactive effect of multi-projection screens in large scenes.
Description
Technical field: [0001] The present invention relates to the technical field of interactive projection identification, in particular to a multi-image sensor automatic calibration interactive projection system and an implementation method thereof. Background technique: [0002] OpenCV (Open Source Computer Vision Library) is a cross-platform computer vision library based on BSD license (open source), which implements many common algorithms in image processing and computer vision, including morphological transformation, thresholding, contour search and Gray code Structured light and other algorithms. Among them, the binary Gray code is an unweighted code. The single-step self-complement of its reflection characteristics and cyclic characteristics eliminates the possibility of major errors when randomly fetching numbers. It belongs to a coding method of reliability coding and error minimization. Measurement technology has a wide range of applications. [0003] The RGBD depth ...
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IPC IPC(8): G06F3/042G06F3/14G06V20/00G06V10/25
CPCG06F3/0425G06F3/1446G06F2203/04104G06V20/10G06V10/25
Inventor 宁广良孙广王文锋
Owner 大庆思特传媒科技有限公司