| 发明名称 |
Image-adaptive quantization for JPEG compression |
| 摘要 |
In a method of digital image compression, the spatial frequency content of a digital image is characterized using a relatively sparse sampling of data blocks from the image, and a quantization table is constructed based on the characterization of the spatial frequency content.
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| 申请公布号 |
US7580579(B2) |
申请公布日期 |
2009.08.25 |
| 申请号 |
US20040018206 |
申请日期 |
2004.12.20 |
| 申请人 |
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. |
发明人 |
WANG YU-WEI;MILLER CASEY L. |
| 分类号 |
G06K9/36 |
主分类号 |
G06K9/36 |
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