发明名称 |
Image coding method using visual optimization |
摘要 |
A method for compressing and decompressing image information. An encoder receives initial image information and transforms said initial information using a linear transform to produce coefficients. These are then locally normalized using a neighborhood masking weighting factor, quantized and coded to result in a compressed bit stream. The compressed bit stream is received at a decoder and an inverse process is applied to reconstruct said image data from the compressed bitstream. Alternatively, the neighborhood-masking factor can be applied after quantization in the rate-distortion optimization process.
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申请公布号 |
US6658162(B1) |
申请公布日期 |
2003.12.02 |
申请号 |
US19990417873 |
申请日期 |
1999.10.13 |
申请人 |
SHARP LABORATORIES OF AMERICA |
发明人 |
ZENG WENJUN;LEI SHAWMIN;DALY SCOTT |
分类号 |
G06T9/00;(IPC1-7):G06K9/46 |
主分类号 |
G06T9/00 |
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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