Method and apparatus for generating a halftoned image from a...

Details Method and apparatus for generating a halftoned image from a... Method and apparatus for generating a halftoned image from a...

2011-08-23

2011-08-23

Lee, John W (Department: 2624)

Image analysis

Image compression or coding

Including details of decompression

C382S246000, C382S250000, C382S251000, C358S003030

Reexamination Certificate

active

08005305

ABSTRACT:
A method and apparatus are provided for generating a halftoned image from an image compressed by a domain transformation yielding coefficients for resulting domain components and by a coding operation by which these coefficients are coded. The method includes performing a decoding operation by which decoded coefficients (yp) are obtained and performing a thresholding operation by which a bitmap is obtained, wherein only certain decoded coefficients (yp) verifying a selection criterion are selected and taken into account in the thresholding operation.

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