Multi-projector stitching fusion method for high-quality visual effect

Abstract

The invention discloses a multi-projector stitching fusion method for high-quality visual effect. The method is characterized by comprising the following steps of: taking horizontal and vertical lines equally dividing a screen, a complete white picture and an overall background picture for each projector through a high-resolution camera; performing geometric correction by means of camera homography trees, and obtaining a geometric correction matrix of each projector; performing edge fusion for overlapped regions through a quarter circular-arc fusion curve; for a light leakage phenomenon, using graded and linear-gradient luminance compensation method; and by the obtained correction parameters, outputting corrected pictures or video of the input pictures or video on devices, such as a large screen, through multiple projectors. According to the method, workload of obtaining a response curve is reduced, good color correction effect can be obtained, and meanwhile, by the method, the visual effect after stitching is better.

Description

technical field [0001] The invention relates to a multi-projector splicing and fusion method for high-quality visual effects. Background technique [0002] In the past, single-projector architecture was often used in various occasions, such as playing movies. Although it has a very good effect on the consistency and integrity of image and video output, it is difficult to meet the growing demand due to the lack of single-projector resolution. The visual needs of the audience. The farther away the viewer is from the screen, the less clear the image will be. Multi-projector splicing is a technology created to solve this problem. Its role is that for high-resolution image or video input sources, it can be output to a single display device such as a large screen through multiple projectors on the basis of maintaining its resolution and visual consistency, and realize seamless splicing , so that the audience can get a good visual effect. [0003] The multi-projector splicing t...

AI Technical Summary

Problems solved by technology

Today's color correction mainly has two ideas, one is the "gamut matching" (gamutmatching) method, first obtain the response curve reflecting the optical characteristics of each projector (such as figure 1 ), and unify the colors of all projectors into a common color interval. Although this can strictly ensure color consistency, in order to be consistent with the fewest projectors with the lowest brightness, the overall brightness will be lost, affecting the final Although the visual effect can be optimized, the workload required is huge and the scalability is poor; the other is to use the edge blending method, which is to transfer the alpha value of one projector in each overlapping area to the adjacent other - The direction of the projector gradually decreases according to a certain curve to achieve a smooth transition of brightness and strong scalability

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