Patent ID: 7512274
Filing Date: 2009-03-31
Classification: G06T,H04N

Abstract:
1. A document compression system, comprising: an encoder that compresses at least one of a foreground and a background of a document image; a mask separator that processes the document image and outputs a binary mask, the binary mask assigns pixels of the document image into at least one of the foreground and the background; an image retoucher comprising a boundary detector that detects a spurious boundary in the document image comprising the foreground and the background, detection being based, at least in part, upon pixel assignment information stored in the binary mask, the image retoucher further comprising an image extender that extends care pixels of at least one of the foreground and the background near the spurious boundary, extension of the care pixels being used for compression of at least one of the foreground and the background; and a decoder that un-compresses at least one of the foreground and the background of the document image.