Stereo matching algorithm based on image segmentation

A technology of image segmentation and stereo matching, which is applied in image analysis, image data processing, calculation, etc., and can solve the problem that small windows are prone to errors

Inactive Publication Date: 2014-02-26
FUZHOU UNIV
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Problems solved by technology

Using a small window is prone to errors in the matching process

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  • Stereo matching algorithm based on image segmentation
  • Stereo matching algorithm based on image segmentation
  • Stereo matching algorithm based on image segmentation

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Embodiment Construction

[0040] Such as figure 1 As shown, the present invention provides a kind of stereo matching algorithm based on image segmentation, comprising the following steps:

[0041] S01: Use the mean-shift (mean value segmentation) algorithm to separate the left color images (such as Figure 2a , Figure 5a , Figure 7a and Figure 9a The original stereo image shown for the left color image) and the right color image (as Figure 2b , Figure 5b , Figure 7b and Figure 9b Image segmentation of the original stereo image shown on the right color image);

[0042] S02: Using the matching cost combined with statistics and sum of absolute error (SAD), use the large window matching method to match the left and right color images respectively, and extract the seed points with high matching accuracy;

[0043]S03: using the result of image segmentation in step S01, in each region, according to the smooth constraints in the region, using the small window matching method to spread the seed p...

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Abstract

The invention relates to a stereo matching algorithm based on image segmentation. The method comprises the steps of S01, conducting image segmentation on a left color image and a right color image by means of the mean-shift algorithm; S02, matching the left color image with the right color image by means of the large window matching method based on matching cost with statistics combined with absolute error summation (SAD), and extracting seed points high in matching accuracy; S03, diffusing the seed points obtained from the S02 to the whole area with the small window matching method by means of the image segmentation result obtained from the S01 in each area according to the smoothness restriction condition of the area; S04, filling up a disparity map obtained from the S03; S05, obtaining a dense disparity map finally. According to the stereo matching algorithm based on image segmentation, a low-grain area can be well detected, and foreground expansion can not be caused in uncontinuous-parallax areas.

Description

technical field [0001] The invention relates to the field of stereo matching algorithms, in particular to a stereo matching algorithm based on image segmentation. Background technique [0002] In recent decades, stereo matching has played a vital role in more and more modern fields, such as three-dimensional measurement technology, 3D TV technology, robot vision, etc. Therefore, stereo matching is also a hot topic of research by many experts and scholars. , many excellent stereo matching algorithms have been proposed and achieved good results. However, there are still many problems in the process of stereo matching. The problems that affect the accuracy of stereo matching are mainly the matching of low-texture regions and the problem of depth discontinuity. [0003] Since in the process of stereo matching, the pixels in the low-texture area have no obvious color or grayscale changes, in other words, the variance of the grayscale value of the pixels in the low-texture area ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00
Inventor 郭太良姚剑敏叶芸林志贤徐胜钟德海
Owner FUZHOU UNIV
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