PICTURE CODING AND DECODING METHODS AND DEVICES

Title:

PICTURE CODING AND DECODING METHODS AND DEVICES

Document Type and Number:

WIPO Patent Application WO/2015/120818

Kind Code:

A1

Abstract:

The present invention provides picture coding and decoding methods and devices. The coding method comprises: selecting, according to pixel sample characteristics of a current coding unit (CU) and adjacent CUs of the current CU, a coding mode from A types of predetermined prediction coding modes with different prediction characteristics and matching coding modes with different matching characteristics to perform prediction or matching coding on the current CU, and using the selected coding mode as an optimal coding mode, wherein the A types of prediction coding modes and matching coding modes comprise: a prediction coding mode, matching coding mode 1, matching coding mode 2, …, and matching coding mode A-1, and A is an integer greater than or equal to 2; and using the optimal coding mode to perform prediction coding or matching coding on the current CU. By means of the technical solution, the problem in the related art of lacking a technical solution for performing high-efficiency coding or high-efficiency decoding on a screen is solved, and a rapid and high-efficiency coding or decoding process is achieved.

Inventors:

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

Application Number:

PCT/CN2015/073160

Publication Date:

August 20, 2015

Filing Date:

February 16, 2015

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Assignee:

UNIV TONGJI (CN)
ZTE CORP (CN)

International Classes:

H04N19/103

Foreign References:

CN102497546A	2012-06-13
US20110274169A1	2011-11-10
CN102843559A	2012-12-26
CN102006481A	2011-04-06
CN102098507A	2011-06-15

Other References: