Video retouching system

Details Video retouching system Video retouching system

1983-03-08

1986-10-14

Masinick, Michael A.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 78, H04N 140

Patent

active

046175920

ABSTRACT:
In a video retouching system having an image source (40), a refresh store (42) fed from the image source, and a monitor (46) supplied from the refresh store, an image modifier (44) is interposed between the refresh store and the monitor and is controlled by a modifying store having a multi-bit location for each picture element. The stored multi-bit values may be used, for example to modify the display to obtain a vignetting effect, or to lighten or darken picture elements or modify chrominance. Preferably a mask store (48) having one bit per pixel defines those pixels which may be modified and those which must not be modified. In one form, the store with a multi-bit location for each picture element controls the merging of two images.

REFERENCES:
patent: 4204223 (1980-05-01), Gast et al.
patent: 4335398 (1982-06-01), Yamada

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