发明名称 |
SUB PIXEL MOTION ESTIMATION METHOD AND APPARATUS REDUCING A BIT PRECISION |
摘要 |
A method and apparatus are provided for sub-pixel motion estimation which performs sub-pixel motion estimation in which the precision of a difference between a pixel value of a block to be searched and a pixel value of a block of a search area, i.e., the number of bits of the difference, is reduced. The method for sub-pixel motion estimation in inter-prediction includes (a) determining one integer pixel corresponding to an estimated block by performing integer-pixel motion estimation, (b) receiving a value of a sub-pixel that is adjacent to the determined integer pixel and a value of an integer pixel of a block to be searched, (c) reducing a difference between the value of the sub-pixel and the value of the integer pixel and reducing a bit precision of the difference, and (d) calculating a similarity using the difference whose bit precision is reduced. <IMAGE> |
申请公布号 |
KR20050117727(A) |
申请公布日期 |
2005.12.15 |
申请号 |
KR20040042916 |
申请日期 |
2004.06.11 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
PARK, CHAN SIK;LEE, JAE HUN;LEE, NAM SUK |
分类号 |
H04N7/32;H04N7/12;H04N7/26;H04N7/30;(IPC1-7):H04N7/32 |
主分类号 |
H04N7/32 |
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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