Method for extracting parallax of stereoscopic image based on sub-pixel

A technology of stereoscopic images and extraction methods, which is applied in stereoscopic systems, image communication, image analysis, etc., can solve the problems of inaccurate reconstruction of parallax maps, inability to reproduce three-dimensional stereoscopic scenes, large parallax value errors, etc., and reduce the amount of image data. , small error, accurate reconstruction effect

Inactive Publication Date: 2008-12-17
SICHUAN UNIV
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Problems solved by technology

Therefore, the search for the matching point of the disparity map based on the integer multiple of the pixel is used to extract the disparity value, and the error of the disparity value is relatively large, resulting in inaccurate reconstruction of the disparity map, so that the three-dimensional scene cannot be reproduced on the multi-view autostereoscopic display.

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  • Method for extracting parallax of stereoscopic image based on sub-pixel
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  • Method for extracting parallax of stereoscopic image based on sub-pixel

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[0022] An embodiment of a method for extracting disparity based on a sub-pixel stereoscopic image proposed by the present invention will be described in detail below with reference to the accompanying drawings, and the present invention will be further described in detail. as attached Figure 4 As shown, according to several disparity maps of the original "lizard", the disparity value of one of the disparity maps is extracted by using the sub-pixel-based stereoscopic image disparity extraction method of the present invention, and the disparity value in the figure is represented by grayscale. Using the disparity value and a disparity map located in the middle, a disparity map sequence composed of multiple disparity maps is reconstructed, and the disparity map sequence can reproduce the stereoscopic scene of "lizard" on a multi-viewpoint autostereoscopic display.

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Abstract

This invention discloses an extracting method for vertical image parallax based on sub-pixel, including following steps: firstly supposing the grey of one parallax image of any two parallax images as 1Pi, the parallax of a certain pixel point of j is (N+delta) pixels, wherein N is the integer, the delta is the integer less than one, then the grey of the matching point in the other parallax image is between 2Pi+N, j and 2Pi+N+1, j, if the 2Pi+N, j and 2Pi+N+1, j, 1Pi, j and its grey of 1Pi-1, j and 1Pi+1, j are satisfied with the relationship: FORMULA, then the parallax of the pixel point 1Pi, j is (N+delta) pixels. The parallax error extracted by the extracting method for vertical image parallax based on sub-pixel of this invention is small, the reconstruction of the parallax is accurate and the 3D scene can be really reappeared on the free vertical display with multiple view points.

Description

1. Technical field [0001] The present invention relates to the technical field of stereoscopic display, and more specifically, the present invention relates to the technical field of a parallax extraction method of a stereoscopic image. 2. Background technology [0002] Multi-viewpoint autostereoscopic displays can be used by many people to freely watch stereoscopic images in a certain range without wearing auxiliary equipment such as glasses or helmets. It is an important new type of stereoscopic display. This type of multi-view stereoscopic display utilizes multiple parallax images to display a stereoscopic scene. The stereoscopic image of a multi-viewpoint autostereoscopic display is that multiple parallax images are arranged and combined according to certain rules, and generally cannot be compressed between adjacent pixels, so the existing general compression method is not available; and the data of the stereoscopic image The amount is several times that of the correspo...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N13/00H04N15/00G06T7/00
Inventor 陶宇虹王琼华王爱红李大海周磊
Owner SICHUAN UNIV
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