Projection picture correction method, projection display system and related equipment
A correction method and projection technology, applied in the field of projection, can solve problems such as inconvenient operation, slow correction speed, and large amount of calculation, and achieve the effects of improving efficiency, simplifying the operation process, and simplifying the calculation process
Pending Publication Date: 2022-01-21
APPOTRONICS CORP LTD
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[0006] The purpose of the present invention is to provide a projection screen correction method, projection display system and related equipment to solve the problems of inconvenient operation and large amount of computation resulting in slow correction speed
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[0051] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0052] see figure 1 As shown, the present invention also provides a projection screen correction method applied to a projection terminal, the method is applied to a projection terminal of a projection display system, and the method at least includes the following steps:
[0053] Step S11, the projection terminal projects scan lines to the screen, and sends the projection screen coordinate information of the scan lines on the projection screen to the screen in ...
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The invention provides a projection picture correction method, which comprises the following steps of: projecting a scanning line to a screen by a projection terminal, sending projection picture coordinate information of the scanning line on a projection picture to the screen, controlling at least four photoelectric sensors to detect brightness by the screen, and when each photoelectric sensor is irradiated by the scanning line, enabling the screen analyze to obtain the projection picture coordinate information of each photoelectric sensor, calculate to obtain the coordinate corresponding information of each photoelectric sensor according to the screen coordinate information and the projection picture coordinate information of each photoelectric sensor, and send the coordinate corresponding information to the projection terminal; and calculating a transformation matrix between the current projection picture and the screen through the projection terminal according to the coordinate corresponding information, and taking the transformation matrix as an input parameter for correction of the projection picture, so that the boundary of the projection picture is matched with the boundary of the screen. Compared with the prior art, the projection picture correction method is simple in operation, simple in operation process and high in automatic correction efficiency of the projection picture.
Description
【Technical field】 [0001] The present invention relates to the field of projection technology, in particular to a projection screen correction method, a projection display system and related equipment. 【Background technique】 [0002] In real life, the application of projection equipment is more and more extensive. In order to ensure good projection and viewing effects, it is necessary to calibrate the projection screen of the projection device. [0003] In the related art, the current projection picture to be corrected is photographed by a camera installed on the projection device or another mobile terminal, and the image information to be corrected corresponding to the current projection picture to be corrected is obtained, and the image information to be corrected is combined with the The preset screen plane information is compared and calculated to obtain a transformation matrix between the projection picture to be corrected and the screen plane, and the projection pictur...
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IPC IPC(8): H04N9/31
CPCH04N9/3185H04N9/3191H04N9/3141H04N9/31
Inventor 陈保林李屹
Owner APPOTRONICS CORP LTD