发明名称 |
AN APPARATUS AND METHOD FOR COMPRESSING STILL IMAGES |
摘要 |
Transforms such as the DCT are useful for image compression. One close relative of the DCT is preferred for its arithmetic simplicity. A method and apparatus is described whereby the image compression is done with no multiplications while still compatible with a JPEG (Joint Photographic Experts Group) Transform. Other enhancements are made to improve image quality. |
申请公布号 |
GB9121439(D0) |
申请公布日期 |
1991.11.20 |
申请号 |
GB19910021439 |
申请日期 |
1991.10.08 |
申请人 |
RICOH KK |
发明人 |
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分类号 |
H04N1/41;G06F7/78;G06F17/14;G06T9/00;G11C8/12;G11C19/00;H04N7/26;H04N7/30;H04N11/04 |
主分类号 |
H04N1/41 |
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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