US PATENT SUBCLASS 382 / 169
.~ With a gray-level transformation (e.g., uniform density transformation)

Current as of: June, 1999
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382 /   HD   IMAGE ANALYSIS

168  DF  HISTOGRAM PROCESSING {4}
169.~ With a gray-level transformation (e.g., uniform density transformation)

DEFINITION

Classification: 382/169

With a gray level transformation (e.g., uniform density transformation):

(under subclass 168) Subject matter wherein the histogram is manipulated to achieve gray level transformations including histogram equalization, histogram normalization, contrast enhancement, and tone scale transformations.

SEE OR SEARCH THIS CLASS, SUBCLASS:

167, for color correction of an image.

SEE OR SEARCH CLASS

345, Computer Graphics Processing, Operator Interface Processing, and Selective Visual Display Systems,

147+, for gray level transformation for a displayed image.

358, Facsimile, 455, 461 for gray level processing in facsimile environment.