Method for obtaining parallax by using region-based local stereo matching

A stereo matching and parallax technology, applied in the field of vision processing, can solve the problems of noise sensitivity, limited camera motion in the shooting environment, and high cost

Active Publication Date: 2012-09-12
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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Problems solved by technology

This method requires professional stereoscopic video shooting equipment and a complete post-processing pipeline, and the cost is too high
At the same time, the stereo camera needs to be matched and calibrated between different viewing angles when shooting, which has certain restrictions on the shooting environment and camera ...

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  • Method for obtaining parallax by using region-based local stereo matching
  • Method for obtaining parallax by using region-based local stereo matching
  • Method for obtaining parallax by using region-based local stereo matching

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specific Embodiment

[0051] Such as figure 1 As shown, a specific embodiment of a method for obtaining disparity by using region-based local stereo matching includes the following steps:

[0052] A. For the current pixel of the first viewpoint image, select several search pixels in the second viewpoint image as a reference;

[0053] B. Use the SAD algorithm to obtain the first matching value between the current pixel and a search pixel, and use the Rank conversion algorithm to obtain the second matching value between the current pixel and the search pixel;

[0054] C. Perform edge detection on the first view point image to obtain the corresponding binarized edge image, and calculate the number of edge pixels in the set area around the pixel point corresponding to the current pixel in the binarized edge image, The first matching weight and the second matching weight are determined according to the number of edge pixels, where the larger the number of edge pixels, the smaller the first matching weight and ...

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Abstract

The invention discloses a method for obtaining parallax by using region-based local stereo matching. The method comprises the steps of selecting a plurality of searching pixels in a second channel of viewpoint images for a current pixel of a first channel of viewpoint images; obtaining a first matching cost value and a second matching cost value between the current pixel and a certain searching pixel by respectively using a sum of absolute differences (SAD) algorithm and a Rank transformation algorithm; determining a first matching weight and a second matching weight according to numbers of edge pixels in a set region around pixels corresponding to the current pixel in binaryzation edge images of the first channel of viewpoint images; regarding the sum of the product of the first matching cost value and the first matching weight and the product of the second matching cost value and the second matching weight as a final matching cost value between the current pixel and the searching pixel; obtaining other final matching cost values and choosing the smallest matching cost value in all the final matching cost values and obtaining a vector difference which is a first parallax of the current pixel between a searching pixel which corresponds to the smallest matching cost value and the current pixel.

Description

【Technical Field】 [0001] The invention involves the field of visual processing, and specifically involves the use of regional local three -dimensional matching methods to obtain dialogue. 【Background technique】 [0002] In the era of digitalization of informatization, with the development of society, ordinary 2D videos have not been able to meet the needs of human life and work in some ways. 3D video related technologies have become important areas of current science and technology development.The production of stereo videos has extensive prospects and business value. At present, there are usually three methods to obtain stereo videos.This method requires professional three -dimensional video shooting equipment and complete post -processing assembly lines, which is too high.At the same time, the three -dimensional camera needs to be matched between different perspectives when shooting, which has certain restrictions on the shooting environment and camera movement.2) Three -dimens...

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Application Information

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IPC IPC(8): H04N13/00H04N13/02
Inventor 王好谦杜成立张永兵戴琼海
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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