αチャンネル映像のための符号化ブロックパターン生成装置及び方法とそれを利用したαチャンネル映像符号化/復号化装置及び方法

Japanese Patent JP4995417

B2

Provided are an apparatus and method for generating a coded block pattern (CBP) for an alpha channel image and an apparatus and method for encoding or decoding the alpha channel image using the same. The alpha channel image encoding apparatus comprises a CBP generator generating a CBP of a first block corresponding to an encoding unit in the alpha channel image by allocating CBPs to a plurality of second blocks composing the first block; and a bitstream generator generating a bitstream by encoding the CBP or the CBP and pixel values of the second blocks based on the CBP of each of second blocks. The alpha channel image decoding apparatus comprises a bitstream analyzer analyzing and decoding a bitstream obtained by encoding an alpha channel image for each first block, which is an encoding unit; a CBP analyzer extracting and analyzing a CBP for each of second blocks included in the first block from the decoded data; and an image restorer restoring a current alpha channel image using the CBP analyzed for each of the second blocks and decoded pixel values.

Kim Yu Tsutsumi
Gold bun
Zhao Star
Park Jin

JP2004337845A

August 08, 2012

November 22, 2004

Click for automatic bibliography generation  

Samsung Electronics Co.,Ltd.

H04N19/102; H03M7/40; H04N7/24; H04N19/129; H04N19/134; H04N19/136; H04N19/159; H04N19/21; H04N19/50; H04N19/503; H04N19/51; H04N19/513; H04N19/523; H04N19/61; H04N19/625; H04N19/80; H04N19/91

JP2001268569A
JP2001197490A

WO2006011258A1

三木弼一編著,「MPEG-4のすべて」,日本,(株)工業調査会,1998年 9月30日,初版,第58~93頁,ISBN:4-7693-1167-2
中屋雄一郎,「第5章 新しい動画像符号化規格MPEG-4の詳細」,Interface,日本,CQ出版株式会社,2000年 1月 1日,2000年1月号(第26巻,第1号),第104~119頁,ISSN:0387-9569

Tadahiko Ito
Shinsuke Onuki
Tadashige Ito

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