Video encoding device, video decoding device, video encoding method, video decoding method, and program

Patent metadata

Field	Value
Publication number	US-2016249055-A1
Application number	US-201615146005-A
Country	US
Kind code	A1
Filing date	May 4, 2016
Priority date	Nov 26, 2010
Publication date	Aug 25, 2016
Grant date	—

Abstract

A video encoding device includes: transform means 11 for transforming an image block; entropy encoding means 12 for entropy-encoding transformed data of the image block transformed by the transform means 11 ; PCM encoding means 13 for PCM-encoding the image block; multiplex data selection means 14 for selecting output data of the entropy encoding means 12 or the PCM encoding means 13 , in a block of a block size set from the outside; and multiplexing means 15 for embedding a PCM header in a bitstream, in the block of the set from the outside block size.

First claim

1 . A video decoding device comprising:
one or more processors, the one or more processors configured to: extract PCM block size information from a bitstream; compute a maximum value of a PCM block size for parsing a PCM header based on the PCM block size information; parse from the bitstream the PCM header whose block has a block size less than or equal to the maximum value of the PCM block size; parse transformed data of an image in the bitstream based on the PCM header; and decode by PCM decoding PCM data of the image in the bitstream based on the PCM header, wherein block size indicates a number of samples contained in a block.

2 . A video decoding method comprising:
extracting PCM block size information from a bitstream; computing a maximum value of a PCM block size for parsing a PCM header based on the PCM block size information; parsing from the bitstream the PCM header whose block has a block size less than or equal to the maximum value of the PCM block size; controlling an entropy decoding process and a PCM decoding process based on the PCM header; parsing transformed data of an image in the bitstream upon the entropy decoding process being controlled; and decoding by PCM-decoding PCM data of the image in the bitstream upon the PCM decoding process being controlled, wherein block size indicates a number of samples contained in a block.

3 . A non-transitory computer readable information recording medium storing video decoding program which, when executed by a processor, performs a method comprising:
extracting PCM block size information from a bitstream; computing a maximum value of a PCM block size for parsing a PCM header based on the PCM block size information; parsing from the bitstream the PCM header whose block has a block size less than or equal to the maximum value of the PCM block size; controlling an entropy decoding process and a PCM decoding process based on the PCM header; parsing transformed data of an image in the bitstream upon the entropy decoding process being controlled; and decoding by PCM-decoding PCM data of the image in the bitstream upon the PCM decoding process being controlled, wherein block size indicates a number of samples contained in a block.

Assignees

• Chono Keiichi
• Senda Yuzo
• Tajime Junji
• Aoki Hirofumi
• Senzaki Kenta
• Nec Corp

Inventors

• Chono Keiichi
• Senda Yuzo
• Tajime Junji
• Aoki Hirofumi
• Senzaki Kenta

Classifications

• H04N19/134 Primary

  characterised by the element, parameter or criterion affecting or controlling the adaptive coding · CPC title

• H04N19/176

  the region being a block, e.g. a macroblock · CPC title

• H04N19/503 Primary

  involving temporal prediction (adaptive coding with adaptive selection between spatial and temporal predictive coding H04N19/107; adaptive coding with adaptive selection among a plurality of temporal predictive coding modes H04N19/109) · CPC title

• H04N19/156 Primary

  Availability of hardware or computational resources, e.g. encoding based on power-saving criteria · CPC title

• H04N19/61

  in combination with predictive coding · CPC title