发明名称 |
Single-pass guaranteed-fit data compression using rate feedback |
摘要 |
An image-compression system provides for high-quality guaranteed-fit image block-by-block compression in a single pass. A baseline block-target allocator determines a baseline target size for the compressed blocks resulting from the source-image blocks. A block target-size accumulator determines a target block size by adding any excess compression from the preceding block to the baseline, as indicated by a compressed-block size reader. A mode selector performs a content analysis of the current block. It then selects among the compression modes guaranteed to meet the target block size one that achieves optimal image quality. A compression encoder compresses the current block according to the selected compression mode.
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申请公布号 |
US7003167(B2) |
申请公布日期 |
2006.02.21 |
申请号 |
US20010036663 |
申请日期 |
2001.11.01 |
申请人 |
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. |
发明人 |
MUKHERJEE DEBARGHA |
分类号 |
G06K9/36;H04N7/26;H04N1/333;H04N1/41;H04N1/413 |
主分类号 |
G06K9/36 |
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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