IMAGE CODING/DECODING METHOD AND APPARATUS

Title:

IMAGE CODING/DECODING METHOD AND APPARATUS

Document Type and Number:

WIPO Patent Application WO/2016/119666

Kind Code:

A1

Abstract:

The present invention provides an image coding/decoding method and apparatus. The coding method comprises: constructing a representative pixel set of a coding block, and determining information needed to construct the representative pixel set; constructing a predicted value of a pixel sample value in the coding block, a generation mode of the predicted value comprising: constructing, according to a reconstructive pixel sample value of an image area outside the coding block and a pixel value of the representative pixel set, the predicted value of the pixel sample value; and coding the information needed to construct the representative pixel set and information needed to construct the predicted value, and writing a video code stream. By means of the technical solution, the problems of longer distance between positions of these reconstructive pixels obtaining the predicted value and a current block, low correlation and low compression efficiency are resolved, the correlation between a predicted value of an image area outside the current block and a current pixel sample value is improved, and the compression efficiency is effectively improved.

Inventors:

LIN TAO (CN)
LI MING (CN)
SHANG GUOQIANG (CN)
WU ZHAO (CN)

Application Number:

PCT/CN2016/072039

Publication Date:

August 04, 2016

Filing Date:

January 25, 2016

Export Citation:

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Assignee:

UNIV TONGJI (CN)
ZTE CORP (CN)

International Classes:

H04N19/105; H04N19/132; H04N19/50; H04N19/56

Foreign References:

CN102984523A	2013-03-20
CN104244007A	2014-12-24
EP0790742A2	1997-08-20

Other References: