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High-efficiency multi-projector splicing and amalgamation method

A multi-projector and fusion method technology, which is applied to color TV parts, TV system parts, TVs, etc., can solve the problems of overall brightness loss, poor scalability, and affecting visual effects, so as to save workload, Good visual effects

Inactive Publication Date: 2010-12-29
ZHEJIANG UNIV
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AI Technical Summary

Problems solved by technology

Today's color correction mainly has two ideas, one is the "gamut matching" (Gamut Matching) 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 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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  • High-efficiency multi-projector splicing and amalgamation method

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Embodiment Construction

[0020] In color correction, if the color gamut matching method is used, the response curve of each projector needs to be obtained, and we know that to obtain the response curve of a projector, it is first necessary to continuously shoot hundreds of images while keeping the camera position unchanged. For a multi-projector mosaic system with 3 rows and 5 columns, a total of thousands of photos need to be taken, and the number of photos required for a larger system will be even greater. Therefore, adopting color gamut matching for a large-scale multi-projection splicing display system will be a labor-intensive method with low efficiency and poor repeatability. The general idea of ​​the multi-projector fusion method of the present invention is to use edge fusion, which can solve the problem of low efficiency, but what kind of fusion curve to use has become a new research problem.

[0021] Light leakage is also a problem that must be solved in projector-related work. The so-called...

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Abstract

The invention discloses a high-efficient multi-projector splicing and blending method. One quarter of an arc is taken as a blending curve for an edge blending color correction method based on the existing geometric correction, and a graded combination linear gradient brightness compensation method is adopted for the light leakage phenomenon. The method does not need to spend great workload and can realize good splicing effect and reflect the high efficiency, so the method can be widely applied in various multi-projector splicing display systems.

Description

technical field [0001] The present invention relates to a multi-projector splicing technology, in particular to an efficient multi-projector splicing and fusion method. Background technique [0002] In the past, such as playing movies, a single-projector architecture was often used. 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 mu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/262
Inventor 林海黄淼
Owner ZHEJIANG UNIV
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