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Stereo video matching method based on affine transformation

A technology of stereoscopic video and affine transformation, applied in stereoscopic systems, image data processing, instruments, etc., can solve the problems of individual user experience requirements, fewer viewing viewpoints, and increased data transmission volume

Inactive Publication Date: 2011-04-20
ZHEJIANG UNIV
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Problems solved by technology

[0003] However, in order to obtain a good three-dimensional display effect, many problems need to be solved: increased data transmission volume, fewer viewing viewpoints, individual user experience requirements, etc.

Method used

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  • Stereo video matching method based on affine transformation
  • Stereo video matching method based on affine transformation
  • Stereo video matching method based on affine transformation

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Embodiment Construction

[0039] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0040] figure 1 The overall flowchart of the video stereo matching method based on affine transformation is given.

[0041] Such as figure 1As shown, in step 101, the current frame image is obtained for the left video and the right video of the stereoscopic video respectively to the previous frame image The affine transformation matrix of and . The specific steps are:

[0042] 1) Use the Harris corner detection method to extract the current frame image respectively and the previous frame image Harris image feature points;

[0043] For the Harris corner detection method, please refer to reference [1]:

[0044] [1] C. Harris and M. Stephens. A combined corner and edge detector. Proceedings of the 4th Alvey Vision Conference, pp. 147-151.

[0045] 2) Use the NCC (Normalized Cross Correlation) method to match the extracted Harris corners; ...

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Abstract

The invention discloses a stereo video matching method based on affine transformation. The method is used for carrying out stereo matching on stereo videos shot by a binocular camera, and comprises the following steps: 1) extracting the characteristic points of the current frame image and a previous frame image, carrying out row matching, and solving the affine transformation matrix from the current frame image to the previous frame image; 2) projecting the pixel point of the current frame image to the previous frame according to the affine transformation matrix; 3) computing the pixel difference between the matched points of the two adjacent frames so as to detect a static zone in the current frame image; 4) computing the initial matching cost of the current frame image; 5) updating the matching cost of the static zone in the current frame image; and 6) computing a parallax image of the current frame image. In the stereo video matching method provided by the invention, the affine constraint relation between video frames is utilized, so that the parallax of the current frame is restrained by the parallax of the previous frame, thus the influence of noise and the like on the parallax accuracy is effectively weakened; the parallax stability in the video is improved; and the stability of a parallax image sequence on a time domain is ensured.

Description

technical field [0001] The invention relates to a stereo video matching method, in particular to a stereo video matching method based on affine transformation. Background technique [0002] Stereo matching method is a research hotspot in computer vision, and the disparity map generated by it has wide application value in 3D reconstruction, video viewpoint synthesis, image layering, image rendering and so on. In particular, the current rise and rapid development of 3D movies marks the arrival of the era of three-dimensional stereoscopic display that can effectively improve the authenticity experience of users. Compared with traditional flat display, 3D stereoscopic display can make users feel like they are on the scene, and enhance the rendering power, vividness and excitement of the scene. For example, 3D football playing technology makes users feel as if they are on the scene. And you can watch the whole scene from all angles. [0003] However, to obtain a good three-dime...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N13/00G06T7/20G06T7/00
Inventor 杜歆张飞陈国赟
Owner ZHEJIANG UNIV
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