Projection system and projection method thereof

Abstract

The invention provides a projection system and a projection method thereof. The projection system comprises a projection device, a memory, an image acquisition device and a processor, wherein the memory records a corresponding relationship between a plurality of test templates and a plurality of groups of image acquisition parameters. The projection device projects a plurality of test templates towards the projection area, and the processor controls the image acquisition device to shoot the projection area with a plurality of groups of image acquisition parameters according to the corresponding relationship recorded in the memory so as to obtain a plurality of first reference images corresponding to the plurality of test templates. The projection device is controlled to project a projection image according to the plurality of test templates and the plurality of corresponding first reference images. According to the projection system and the projection method thereof provided by the invention, the camera can shoot clear test template images when the projector continuously projects a plurality of test templates, and the accuracy of automatic correction of the projector is improved.

Description

technical field [0001] The present invention relates to a projection technology, and in particular to a projection system capable of accurate automatic correction and a projection method thereof. Background technique [0002] In the field of automatic calibration of projectors, cameras are often used to assist in the calibration of projectors. In detail, the projector will project a test pattern, and after the camera captures the projected image, through image processing and algorithm calculation, the projector can be pre-warped, etc. Correction. In a good camera shooting state, the camera can capture a clear test template, so subsequent image processing and algorithms can proceed smoothly. In other words, whether the camera can capture a clear test template has a considerable impact on the accuracy of the automatic calibration of the projector. [0003] However, the camera is not able to capture a clear test pattern in all cases. For example, when the projector continuo...

AI Technical Summary

Problems solved by technology

For example, when the projector continuously projects multiple test templates, the camera has no time to perform auto-focus, auto-white balance or auto-exposure operations due to the fast switching speed of the test templates, which makes the image obtained by the camera blurred

For another example, when the brightness of the projector is too high, it will cause the camera to be overexposed, and it will also cause the camera to be unable to capture a clear test template

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