发明名称 |
Motion image coder using pre-filter to reduce quantization error |
摘要 |
A motion image coder is provided with a pre-filter for performing a pre-filtering which adaptively restricts the band for characteristics of the coded blocks. The pre-filtered result is used in determining quantization step size, thereby halving the quantization error causing a picture quality deterioration into a resolution error. Therefore, picture quality can be improved.
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申请公布号 |
US5686962(A) |
申请公布日期 |
1997.11.11 |
申请号 |
US19940366727 |
申请日期 |
1994.12.30 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
CHUNG, TAE-YUN;KANG, JUNG-SUK |
分类号 |
H04N7/26;H04N7/50;(IPC1-7):H04N7/48 |
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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