Method and system for improved copy quality by generating contone value based on pixel pattern and image context type around pixel of interest

A method and system reconstructs a contone image from a binary image by first tagging pixels to identify one of a multiplicity of image content types. The tag information and the pattern of bits surrounding the pixel to be converted to a contone value are used to reconstruct a contone image from a b...

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Bibliographische Detailangaben
Hauptverfasser: Nagarajan, Ramesh, Tse, Francis Kapo, Lee, Chia-Hao, Cassidy, John Christopher, Wu, John W
Format: Patent
Sprache:eng
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Zusammenfassung:A method and system reconstructs a contone image from a binary image by first tagging pixels to identify one of a multiplicity of image content types. The tag information and the pattern of bits surrounding the pixel to be converted to a contone value are used to reconstruct a contone image from a binary image. The pattern of bits in the neighborhood is used to generate a unique identifier. The unique identifier is used as the address for a lookup table with the contone value to be used wherein each lookup table corresponds to an image context type.