发明名称 |
ENCODING IMAGE DATA USING MASK LOOKUP TABLE AND DECODING SUCH ENCODED IMAGE DATA |
摘要 |
<p>In one aspect, an image is quantized by assigning sub-ranges of pixel values in the image to respective quantization levels. The quantized image is encoded based at least in part on a mask lookup table assigning index values to respective masks, wherein each mask corresponds to a respective spatial distribution of the quantization levels. In another aspect, a code corresponding to an encoded image with pixel values quantized to respective quantization levels is received. The code is decoded based at least in part on a mask lookup table assigning index values to respective masks, wherein each mask corresponds to a respective spatial distribution of the quantization levels.</p> |
申请公布号 |
EP1774474(B1) |
申请公布日期 |
2009.05.13 |
申请号 |
EP20050776712 |
申请日期 |
2005.07.29 |
申请人 |
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. |
发明人 |
BERGMAN, RUTH;RUCKENSTEIN, GITIT;SHAKED, DORON;KESHET, RENATO |
分类号 |
G06T9/00 |
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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