发明名称 |
Coder matched layer separation and interpolation for compression of compound documents |
摘要 |
A method of preparing an image for efficient wavelet transform compression includes the steps of separating the image into foreground and background image layers, and a mask layer. A smoothing filter is applied to interpolate irrelevant pixel values in the foreground and background layers for coder efficiency. The irrelevant pixel values are interpolated as a function of relevant pixels and causal irrelevant pixels within the smoothing filter window.
|
申请公布号 |
US6941024(B2) |
申请公布日期 |
2005.09.06 |
申请号 |
US20020047289 |
申请日期 |
2002.01.14 |
申请人 |
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. |
发明人 |
MUKHERJEE DEBARGHA |
分类号 |
H03M7/30;H04N1/41;(IPC1-7):G06K9/36;G06K9/46 |
主分类号 |
H03M7/30 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|