发明名称 |
APPARATUS AND METHOD FOR ENCODING AND DECODING USING ALTERNATIVE CONVERTER ACCODING TO THE CORRELATION OF RESIDUAL SIGNAL |
摘要 |
Provided is an apparatus and method for encoding and decoding using alternative transform units according to the correlation of residual signals. The video encoding apparatus includes a first transforming unit for performing discrete cosine transform (DCT), first quantization, first inverse quantization, and inverse DCT on a block basis onto residual coefficients generated after intra frame prediction or inter frame prediction; a second transforming unit for performing discrete sine transform (DST), second quantization, second inverse quantization, and inverse DST on a block basis onto the residual coefficients; a selecting unit for selecting one having a high compression rate between the first and second transforming units for each block through performing rate-distortion optimization; and a flag marking unit for recording information about the selected transforming unit at a flag bit provided on a macroblock basis.
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申请公布号 |
US2009238271(A1) |
申请公布日期 |
2009.09.24 |
申请号 |
US20070441940 |
申请日期 |
2007.04.13 |
申请人 |
KIM DAE-YEON;SEO JEONG-IL;BEACK SEUNG-KWON;JANG IN-SEON;JANG DAE-YOUNG;KIM JAE-GON;MOON KYUNG-AE;HONG JIN-WOO;KIM JIN-WOONG;OH SEOUNG-JUN;AHN CHANG-BEOM;JEONG SE-YOON;CHOI HAE-CHUL;LEE YUNG-LYUL;SIM DONG-GYU;LIM SUNG-CHANG |
发明人 |
KIM DAE-YEON;SEO JEONG-IL;BEACK SEUNG-KWON;JANG IN-SEON;JANG DAE-YOUNG;KIM JAE-GON;MOON KYUNG-AE;HONG JIN-WOO;KIM JIN-WOONG;OH SEOUNG-JUN;AHN CHANG-BEOM;JEONG SE-YOON;CHOI HAE-CHUL;LEE YUNG-LYUL;SIM DONG-GYU;LIM SUNG-CHANG |
分类号 |
H04N7/26;H04N7/32 |
主分类号 |
H04N7/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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