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

A multi-projector, visual effect technology, applied in color TV parts, TV system parts, image reproducers using projection devices, etc., can solve the problems of overall brightness loss, poor scalability, and heavy workload. , to achieve the effect of saving workload and good visual effect

Inactive Publication Date: 2016-02-03
XIAN SIKUN ELECTRONICS SCI & TECH
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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

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

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[0021] In order to further illustrate the present invention, the following further description is made in conjunction with the accompanying drawings:

[0022] In color correction, if the color gamut matching method is adopted, it is necessary to obtain the response curve of each projector, and we know that to obtain the response curve of a projector, first of all, it is necessary to keep the camera position unchanged. For a multi-projector splicing system with 3 rows and 5 columns, a total of several thousand photos need to be taken. For a larger system, the number of photos needed to be taken will be even greater. Therefore, it is a labor-intensive method to adopt color gamut matching for larger-scale multi-projection splicing display systems, which has relatively low efficiency and poor repeatability. The overall idea of ​​the multi-projector fusion method of the present invention is to adopt edge fusion, which can solve the problem of low efficiency, but what kind of fusion cu...

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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...

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Application Information

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IPC IPC(8): H04N5/74H04N9/31G06T5/00
Inventor 袁博冯永强
Owner XIAN SIKUN ELECTRONICS SCI & TECH
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