METHOD AND APPARATUS FOR ENCODING AND DECODING VIDEO USING ADAPTIVE QUANTIZATION MATRIX FOR SQUARE AND RECTANGULAR TRANSFORM UNITS

WIPO Patent Application WO/2013/005386

A1

Adaptive quantization matrix for square and rectangular transform units in this invention is to improve the utilization of quantization matrix when square and rectangular quantization matrixes are supported. Instead of using two different sets of quantization matrixes for square transform units and rectangular transform units, this invention adaptively adjusts a quantization matrix so that the square transform unit and the rectangular transform unit could share the same quantization matrix. In this way, the number of quantization matrixes to be encoded is reduced. The benefits of the current invention are in the form of reducing the overhead bits for quantization matrixes and therefore improving the objective picture quality.

LI JIN
WAHADANIAH VIKTOR
LIM CHONG SOON
NAING SUE MON THET
SUN HAI WEI
SHIBAHARA YOUJI
NISHI TAKAHIRO
SASAI HISAO
SUGIO TOSHIYASU
TANIKAWA KYOKO
MATSUNOBU TORU

PCT/JP2012/004110

January 10, 2013

June 26, 2012

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PANASONIC CORP (JP)
LI JIN
WAHADANIAH VIKTOR
LIM CHONG SOON
NAING SUE MON THET
SUN HAI WEI
SHIBAHARA YOUJI
NISHI TAKAHIRO
SASAI HISAO
SUGIO TOSHIYASU
TANIKAWA KYOKO
MATSUNOBU TORU

H04N7/30

JP2004254327A	2004-09-09
JP2006262004A	2006-09-28

XIMIN ZHANG ET AL.: "Method and syntax for quantization matrices representation", JOINT COLLABORATIVE TEAM ON VIDEO CODING (JCT-VC) OF ITU-T SG16 WP3 AND ISO/IEC JTC1/SC29/WG11 7TH MEETING, 21 November 2011 (2011-11-21), GENEVA

NII, Hiromori (6F Tanaka Ito Pia Shin-Osaka Bldg., 3-10, Nishi Nakajima 5-chome, Yodogawa-ku, Osaka-cit, Osaka 11, JP)

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