Compression of mixed raster content (MRC) image data

Details Compression of mixed raster content (MRC) image data Compression of mixed raster content (MRC) image data

2007-03-13

2007-03-13

Dang, Duy M. (Department: 2624)

Image analysis

Image compression or coding

C382S164000, C382S173000

Reexamination Certificate

active

10639391

ABSTRACT:
In a mixed raster content (MRC) image data format, where a separation plane is used to define portions of the image to compressed in a lossy or lossless manner, edge pixels are identified in the separation plane. Each edge pixel is modified to assume a maximum luminance and most neutral chrominance found among neighboring pixels. The modification of the edge pixel data minimizes artifacts such as fringe effects when the image data is compressed and subsequently decompressed.

REFERENCES:
patent: 5367387 (1994-11-01), Yamaguchi
patent: 2002/0168105 (2002-11-01), Li
patent: 2004/0052419 (2004-03-01), Curry et al.
Donald J. Curry et al., entitled “Weak Edge Repositioning in a MRC Segmentor”, U.S. Appl. No. 10/612,205, filed Jul. 1, 2003.

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