US PATENT SUBCLASS 348 / 28
.~ Selective contrast expander

Current as of: June, 1999
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25  DF  IMAGE FALSIFICATION TO IMPROVE VIEWER PERCEPTION OF SELECTIVE OBJECT (E.G., MOVING OBJECT OR TARGET) {4}
28.~ Selective contrast expander

DEFINITION

Classification: 348/28

Selective contrast expander:

(under subclass 25) Subject matter wherein a picture signal has (a) a selected geometrical area with a gray scale which is extended generally to a full range or (b) a selected range of gray scale which is extended generally to a full range to

enable a viewer to perceive a selected object from a similar background.