Apparatus and method for enhancement of video images

Details Apparatus and method for enhancement of video images Apparatus and method for enhancement of video images

1984-09-07

1987-01-13

Church, Craig E.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

378 99, H04N 532

Patent

active

046368507

ABSTRACT:
An apparatus and method for producing digital video images provides for obtaining a first image (42) and a second image (44), and subtracting the first from the second to obtain a difference image (46). The intensity of the difference image is increased relative to the first image (48). The enhanced difference image is added to the first image (50). The result is an image which emphasizes changes between the first and second images, while preserving enough common background to provide a frame of reference from which to view the changes.

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