发明名称 |
AN ENCODING/DECODING METHOD AND DEVICE, A FRACTIONAL PIXEL INTERPOLATION PROCESSING METHOD AND DEVICE |
摘要 |
<p>An inter-frame predictive encoding method, decoding method, encoding apparatus, and decoding apparatus, and a sub-pixel interpolation method and apparatus are disclosed. The inter-frame predictive coding and decoding solution takes into consideration the impact caused by the texture distribution direction of the image onto the precision of the sub-pixel reference sample, and performs repeated sub-pixel interpolation for the integer pixel sample of an image block to be encoded by adjusting the interpolation direction, thus obtaining multiple groups of sub-pixel reference sample values of different precision; afterward, the reference sample value of the highest precision is selected among the integer pixel sample value and all the sub-pixel reference sample values, thus improving the encoding rate of the encoder. The sub-pixel interpolation solution under the present invention sets at least two different interpolation directions for each sub-pixel to be interpolated, calculates out the corresponding predictive value, and selects the best value among all the predictive values as a best predictive value of the sub-pixel sample to be interpolated, thus improving the precision of the sub-pixel reference sample value.</p> |
申请公布号 |
EP2091258(A1) |
申请公布日期 |
2009.08.19 |
申请号 |
EP20070855683 |
申请日期 |
2007.12.13 |
申请人 |
HUAWEI TECHNOLOGIES CO., LTD. |
发明人 |
ZHOU, JIANTONG;HU, CHANGQI;XIE, QINGPENG;LIN, SIXIN;ZENG, PENGXIN;XIONG, LIANHUAN |
分类号 |
H04N7/32;H04N7/26;H04N7/50 |
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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