DEVICE AND METHOD FOR VIDEO ENCODING, AND DEVICE AND METHOD FOR VIDEO DECODING

WIPO Patent Application WO/2013/035358

A1

[Problem] To improve image quality by adding a small amount of data. [Solution] According to an embodiment of the present invention, a video encoding device is provided with a first encoding unit, a difference calculation unit, a first pixel range conversion unit, and a second encoding unit. The first encoding unit generates first encoded data by performing a first encoding process on an input image, and generates a first decoded image by performing a first decoding process on the first encoded data. The difference calculation unit generates a difference image between the input image and the first decoded image. The first pixel range conversion unit generates a first converted image by converting the pixel value of the difference image to within a first specific range. The second encoding unit generates second encoded data by performing a second encoding process, which is different from the first encoding process, on the first converted image. The first specific range is included in a range of pixel values which can be encoded by the second encoding unit.

WATANABE TAKASHI (JP)
YAMAKAGE TOMOO (JP)
ASANO WATARU (JP)
TANIZAWA AKIYUKI (JP)
SHIODERA TAICHIRO (JP)

PCT/JP2012/055230

March 14, 2013

March 01, 2012

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TOSHIBA KK (JP)
WATANABE TAKASHI (JP)
YAMAKAGE TOMOO (JP)
ASANO WATARU (JP)
TANIZAWA AKIYUKI (JP)
SHIODERA TAICHIRO (JP)

H04N19/50; H04N19/102; H04N19/136; H04N19/137; H04N19/172; H04N19/176; H04N19/196; H04N19/36; H04N19/46; H04N19/587; H04N19/59; H04N19/597; H04N19/70; H04N19/91

JP2004015226A	2004-01-15
JPH11313326A	1999-11-09
JP2002542739A	2002-12-10
JP2006295913A	2006-10-26
JP2003524904A	2003-08-19

KATSUNUMA Hirohito et al. (JP)
Katsunuma Hirohito (JP)

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