CODE MATCHED LAYER SEPARATION FOR COMPRESSION OF COMPOUND DOCUMENTS

摘要

Methods for decomposing compound documents for mixed raster content representation are provided. A method for decomposing an image includes the step of decomposing the image into a plurality of stripes 220. Each stripe 310 is decomposed 450 into foreground 120, background 130, and mask 140 layers. The layers are interpolated 460 to modify values of irrelevant pixels in order to achieve more efficient compression. The layers may subsequently be compressed with a coder.