VIDEO CODING APPARATUS AND VIDEO CODING PROGRAM

PROBLEM TO BE SOLVED: To reduce a calculation amount without lowering a coding efficiency.SOLUTION: A video coding apparatus comprises: means for capturing rough motion of a block to be coded and calculating the pre-motion prediction processing cost for each coding block size; means for determining...

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Main Authors ONISHI TAKAYUKI, OMORI YUYA, SANO TAKU, SHIMIZU ATSUSHI
Format Patent
LanguageEnglish
Japanese
Published 02.02.2017
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Abstract PROBLEM TO BE SOLVED: To reduce a calculation amount without lowering a coding efficiency.SOLUTION: A video coding apparatus comprises: means for capturing rough motion of a block to be coded and calculating the pre-motion prediction processing cost for each coding block size; means for determining a block size candidate cost in a first coding block size candidate and a block size candidate cost in a second coding block size candidate on the basis of the pre-motion prediction processing cost; means for determining a motion statistical parameter; means for setting a cost comparison offset value on the basis of the motion statistical parameter and the depth of the hierarchy in the reference structure of a picture to be coded; and means for determining the size candidate of the coding block of the picture to be coded as either the first block size candidate or the second block size candidate from all the block size candidates on the basis of the first block size candidate cost, the second block size candidate cost, and the cost comparison offset value.SELECTED DRAWING: Figure 1 【課題】符号化効率を低下させずに演算量の削減を行う。【解決手段】対象符号化ブロックの大まかな動きを捕え、各符号化ブロックサイズにおける事前動き予測処理コストを算出する手段と、事前動き予測処理コストに基づいて、第1の符号化ブロックサイズ候補におけるブロックサイズ候補コストと第2の符号化ブロックサイズ候補におけるブロックサイズ候補コストを決定する手段と、動き統計パラメータを決定する手段と、動き統計パラメータと、符号化対象ピクチャの参照構造における階層の深さとに基づいて、コスト比較オフセット値を設定する手段と、第1のブロックサイズ候補コストと、第2のブロックサイズ候補コストと、コスト比較オフセット値とに基づいて、符号化対象ピクチャの符号化ブロックのサイズ候補を全ブロックサイズ候補の中から第1のブロックサイズ候補または第2のブロックサイズ候補のいずれかに決定する手段とを備える。【選択図】図1
AbstractList PROBLEM TO BE SOLVED: To reduce a calculation amount without lowering a coding efficiency.SOLUTION: A video coding apparatus comprises: means for capturing rough motion of a block to be coded and calculating the pre-motion prediction processing cost for each coding block size; means for determining a block size candidate cost in a first coding block size candidate and a block size candidate cost in a second coding block size candidate on the basis of the pre-motion prediction processing cost; means for determining a motion statistical parameter; means for setting a cost comparison offset value on the basis of the motion statistical parameter and the depth of the hierarchy in the reference structure of a picture to be coded; and means for determining the size candidate of the coding block of the picture to be coded as either the first block size candidate or the second block size candidate from all the block size candidates on the basis of the first block size candidate cost, the second block size candidate cost, and the cost comparison offset value.SELECTED DRAWING: Figure 1 【課題】符号化効率を低下させずに演算量の削減を行う。【解決手段】対象符号化ブロックの大まかな動きを捕え、各符号化ブロックサイズにおける事前動き予測処理コストを算出する手段と、事前動き予測処理コストに基づいて、第1の符号化ブロックサイズ候補におけるブロックサイズ候補コストと第2の符号化ブロックサイズ候補におけるブロックサイズ候補コストを決定する手段と、動き統計パラメータを決定する手段と、動き統計パラメータと、符号化対象ピクチャの参照構造における階層の深さとに基づいて、コスト比較オフセット値を設定する手段と、第1のブロックサイズ候補コストと、第2のブロックサイズ候補コストと、コスト比較オフセット値とに基づいて、符号化対象ピクチャの符号化ブロックのサイズ候補を全ブロックサイズ候補の中から第1のブロックサイズ候補または第2のブロックサイズ候補のいずれかに決定する手段とを備える。【選択図】図1
Author ONISHI TAKAYUKI
SANO TAKU
OMORI YUYA
SHIMIZU ATSUSHI
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DocumentTitleAlternate 映像符号化装置及び映像符号化プログラム
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Snippet PROBLEM TO BE SOLVED: To reduce a calculation amount without lowering a coding efficiency.SOLUTION: A video coding apparatus comprises: means for capturing...
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ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
Title VIDEO CODING APPARATUS AND VIDEO CODING PROGRAM
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