发明名称 |
Systems and methods for adjusting image data to form highly compressible image planes |
摘要 |
The image data is processed into a background plane and a plurality of foreground planes. Holes are inserted into the background plane, in regions which are assigned to a foreground plane. The background plane is sub-sampled, and holes remaining in the sub-sampled image are filled with the average color of the non-zero sub-sampled pixels over pre-determined blocks such as JPEG blocks. If a block is entirely made of holes, the block is filled with a constant color that is propagated from the average color of a previous block. The resulting background plane is far smoother than the original image data and thus can be effectively sub-sampled and highly compressed without adverse deterioration in reconstructed image quality. <IMAGE>
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申请公布号 |
EP1587298(A1) |
申请公布日期 |
2005.10.19 |
申请号 |
EP20050100876 |
申请日期 |
2005.02.09 |
申请人 |
XEROX CORPORATION |
发明人 |
CURRY, DONALD J.;NAFARIEH, ASGHAR;KLETTER, DORON |
分类号 |
H04N1/40;G06T5/00;H04N1/41;(IPC1-7):H04N1/40 |
主分类号 |
H04N1/40 |
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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