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Method for correcting multi-viewpoint vedio color

A technology for multi-view video and color correction, which is applied in the field of multi-view video image processing, and can solve the problems of slow color correction, low mapping accuracy, and complicated calculation.

Inactive Publication Date: 2007-10-03
上海贵知知识产权服务有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, for the mapping curve from gray level 0 to gray level N, simple histogram matching cannot make the global histogram of the corrected image and the reference image the mapping with the smallest gap, and its mapping accuracy is not high, and the color correction Slow speed, complicated calculations, etc.

Method used

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  • Method for correcting multi-viewpoint vedio color
  • Method for correcting multi-viewpoint vedio color
  • Method for correcting multi-viewpoint vedio color

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Embodiment Construction

[0050] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0051] The concept of the minimum cost path defined by the present invention and the problem of finding the minimum cost path based on the dynamic programming technique are firstly described below.

[0052] The description of the minimum cost path is shown in Figure 3: Suppose the 1D histograms of the two images are h 1 ={h 1 [0],h 1 [1],...,h 1 [M]} and h 2 ={h 2 [0],h 2 [1],...,h 2 [N]}, define the cross-correlation matrix C as:

[0053] C M × N = h 1 ⊗ h 2 = c 11 c 12 ...

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Abstract

This invention discloses a color correction method of videos of multiple viewpoints including: computing the histograms of a target imafe and a source image, utilizing a dynamic programming algorithm to seek the minimum cost path so as to set up a color mapping relation between the two images, besides, it increases compensation factors on the level and vertical directions to ensure smooth of the path and finally to realize color correction to videos of multiple viewpoints by a video follow technology to increase the mapping accuracy of colors.

Description

technical field [0001] The invention relates to a method for processing multi-viewpoint video images, in particular to a multi-viewpoint video color correction method. Background technique [0002] In the real world, the visual content seen by the observer depends on the position of the observer relative to the observed object, and the observer can freely choose various angles to observe and analyze things. In traditional video systems, the real scene relative to a viewpoint is determined by the cameraman or director. Users can only passively watch the video image sequence captured by the camera at a single viewpoint, but cannot freely choose other viewpoints. To observe the real scene. These unidirectional video sequences can only reflect one side of the real-world scene. The free-viewpoint video system allows users to freely choose a viewpoint to watch any side within a certain range in real-world scenes, and is called the development direction of the next-generation vid...

Claims

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Application Information

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IPC IPC(8): H04N9/64H04N9/68H04N17/02
Inventor 邵枫郁梅蒋刚毅
Owner 上海贵知知识产权服务有限公司