发明名称 |
IMAGE ENCODING DEVICE, IMAGE DECODING DEVICE, IMAGE ENCODING METHOD, AND IMAGE DECODING METHOD |
摘要 |
<p>To provide a method of efficiently compressing information by performing improved removal of signal correlations according to statistical and local properties of a video signal in a 4:4:4 format which is to be encoded, an image encoding device for dividing each picture of a digitalvideo signal into predetermined unit regions, and carrying out, for each of the predetermined unit regions, compression encoding using a motion compensation prediction includes: a prediction unit for searching for a motion vector based on virtual-pixel-accuracy specification information for specifying an upper limit of an accuracy of a pixel position indicated by the motion vector, and generating, based on the motion vector that is searched for, amotion-compensation predicted image; and an encoding unit for multiplexing the virtual-pixel-accuracy specification information with a bit stream, and multiplexing, based on a magnitude of the motion vector that is searched for and a magnitude of a motion vector used for prediction of the motion vector that is searched for, motion vector data to be encoded with the bit stream.</p> |
申请公布号 |
EP2234404(A1) |
申请公布日期 |
2010.09.29 |
申请号 |
EP20090701456 |
申请日期 |
2009.01.08 |
申请人 |
MITSUBISHI ELECTRIC CORPORATION |
发明人 |
SEKIGUCHI, SHUNICHI;OTOI, KENJI;IDEHARA, YUICHI;YAMADA, YOSHIHISA;ASAI, KOHTARO;MURAKAMI, TOKUMICHI |
分类号 |
H04N19/50;H04N19/105;H04N19/134;H04N19/136;H04N19/139;H04N19/196;H04N19/46;H04N19/463;H04N19/517;H04N19/52;H04N19/523;H04N19/60;H04N19/70;H04N19/91 |
主分类号 |
H04N19/50 |
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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