Compression of images using object maps

Details Compression of images using object maps Compression of images using object maps

2006-12-05

2006-12-05

Alavi, Amir (Department: 2624)

Image analysis

Image compression or coding

Shape, icon, or feature-based compression

C382S166000

Reexamination Certificate

active

07146058

ABSTRACT:
Various systems, methods, and programs embodied in computer readable mediums are provided for compression of a page frame that includes a number of pixels. In one embodiment, an object map is generated that includes a number of values, each of the values being associated with a corresponding one of the pixels in the page frame. Also, a compressed image file is generated of the page frame that is associated with the object map. Each of the values in the object map indicates whether a blank color conversion or one of a number of predefined color conversions is to be performed during a reconstruction of a corresponding one of the pixels, wherein each of the predefined color conversions includes a corresponding degree of gray component replacement.

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