Method for compressing three-dimensional image video sequence

A technology for stereoscopic images and video sequences, applied in stereoscopic systems, image communication, digital video signal modification, etc., can solve problems such as loss of chromaticity information, and achieve the effect of reduced data volume, no discomfort, and clear images

Inactive Publication Date: 2009-12-23
TIANJIN UNIV
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Problems solved by technology

The video representation method of YUV4:2:0 format, which is common in video processing, takes advantage of the feature that human eyes are not sensitive to chroma, and reduces the resolut

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  • Method for compressing three-dimensional image video sequence
  • Method for compressing three-dimensional image video sequence
  • Method for compressing three-dimensional image video sequence

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[0081] The method for compressing and encoding a stereoscopic image video sequence of the present invention will be described in detail below with reference to the embodiments and the accompanying drawings.

[0082] The stereoscopic image video sequence compression and coding method of the present invention is characterized in that, a compression method and a decompression method are used. L extracts the feature points and then performs Delaunay triangulation, uses the normalized covariance method to find the matching points of the left view L feature points in the right view R, and establishes a hollow right view R. Each triangle is deformed to correspond to the right view Figure 3 Angular shape, fill out the right view R', then extract the residual information Y' of the Y component of the original right view R and the filled right view R', perform DCT transformation, quantization and entropy coding, and use the JPEG method for the left view L compression. The compressed d...

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Abstract

The invention relates to a method for compressing three-dimensional image video sequence, comprising left view L and right view R of three-dimensional image are respectively converted into YUV4:2:0; feature points of the left view L are extracted, and then the left view L is processed by Delaunay triangular mesh subdivision; points matched with the feature points of the left view L are found out in the right view R; hollow triangular mesh of the right view R is set up, and right view R' is filled out; residual information Y' of Y component between the original right view R and the filled out right view R' is then extracted; DCT transformation as well as quantization and entropy coding are carried out, and a JPEG method is used for compressing the left view L. According to the information of the matched feature point set of the left and the right views, every triangle in the left view is treated by affine transformation; the YUV information of the left view and the right view which is newly set up is transformed into RGB information, left and right three-dimensional diagram pairs can be obtained after being uncompressed and then transformed into three-dimensional image according to the display way. The method reduces the data volume of the three-dimensional image, and the three-dimensional image which is decoded and restored has good three-dimensional effect, no uncomfortable feeling and clear image. After being decoded, the image has higher similarity with the original image.

Description

technical field [0001] The invention relates to a method for compressing stereoscopic image video sequences. In particular, it relates to a method of using delaunay triangulation to divide images into grids, compress stereo images, and reduce data volume. Background technique [0002] In the natural world, human beings can observe real three-dimensional scenes through binoculars. How do human beings obtain stereoscopic vision by observing things with binoculars? This is a question that has troubled many scientists for a long time. The function of human eyes has been studied since Descartes, and Newton once guessed about the visual chiasm of the eyes. In 1838, Wheatstone invented the stereoscope, which revealed the reason why human beings obtain stereoscopic vision—parallax gives people a sense of stereoscopic vision. The average distance between the two eyes of a person is about 65mm, and the angle of observing objects is slightly different, resulting in parallax, that is...

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Application Information

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IPC IPC(8): H04N13/00H04N7/26H04N7/30H04N19/44H04N19/597
Inventor 侯春萍杨嘉琛岳斌
Owner TIANJIN UNIV
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