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Binocular stereo image coding and decoding method based on motion compensation

A technology of binocular stereo and decoding method, which is applied in the direction of image communication, stereo system, electrical components, etc. It can solve the problems of complex algorithm of accurate parallax information, large amount of parallax information, long operation time, etc., and achieve small data volume and decoding speed Fast, good quality results

Inactive Publication Date: 2015-09-09
NANJING UNIV
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Problems solved by technology

[0005] The problem to be solved by the present invention is: the existing binocular stereoscopic image compression coding technology has the disadvantages of low compression rate or complex algorithm for obtaining accurate parallax information, long calculation time, and large amount of parallax information

Method used

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  • Binocular stereo image coding and decoding method based on motion compensation
  • Binocular stereo image coding and decoding method based on motion compensation
  • Binocular stereo image coding and decoding method based on motion compensation

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Embodiment Construction

[0032]The invention proposes a fast encoding method of binocular stereo images based on motion compensation. And a coding system for binocular stereo images with graphic interface display is realized by C++ programming language. The functions of the system include inputting left and right images and displaying them on the main interface, encoding the stereoscopic images and displaying the intermediate results of each step, decoding and displaying the left and right images, calculating the peak signal-to-noise ratio of the decoded left and right images, etc. Such as image 3 Shown are the left and right grayscale images in Teddy from the input Middlebury dataset. The Middlebury dataset is a test dataset for computer vision.

[0033] The specific implementation steps of the present invention are as follows:

[0034] 1) figure 1 It is the encoding process of the binocular stereoscopic image of the method of the present invention.

[0035] Input the left image and right image...

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Abstract

The invention discloses a binocular stereo image coding and decoding method based on motion compensation. The binocular stereo image coding and decoding method includes the steps that left and right images are motion-estimated on the basis of a fixed block size to obtain motion vectors; the right image is predicated by using the motion vectors and the left image to obtain a predicated value; a pixel value of the right image the predicated value are subtracted to generate a prediction error , i.e. a residual image; the residual image and the left image are coded according to the jpeg 2000 image compression standard; the motion vectors are subjected to DPCM predictive coding, wherein the motion vector estimation adopts a half-pixel precision which enables more accurate predication in comparison with a full-pixel precision. The right image is predicated on the basis of motion compensation by using the decoded left image in an actual coding process, so that the distortion caused by the left image compression is prevented from being brought into the right image. The binocular stereo image coding and decoding method based on the motion compensation has the advantage of fastness and can satisfy fast coding and decoding demands.

Description

technical field [0001] The invention belongs to the field of computer technology, relates to multimedia data compression encoding in multimedia technology, and is a binocular stereo image encoding and decoding method based on motion compensation. According to the principle of binocular stereo vision, the redundant pairing of content between left and right images is used. The image is compressed. Background technique [0002] Stereoscopic vision is a popular direction that has emerged in recent years. With the popularity of 3D movies and 3D TVs, stereo vision is more and more widely used in people's daily life. Common multimedia data, including image, audio and video data volume is very large, usually a common public media format (CIF) video file with a picture size of 352 * 288 will take up 35Mbps of bandwidth without compression. In high-definition television (HDTV), the code rate will exceed 1Gbps. As for the 3D stereoscopic video image, the amount of data in the uncomp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N13/00
Inventor 武港山周振
Owner NANJING UNIV
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