Gray scale interpolation technique

Details Gray scale interpolation technique Gray scale interpolation technique

1976-06-03

1977-06-28

Martin, John C.

Facsimile and static presentation processing

Facsimile

Recording apparatus

H04N 140

Patent

active

040329771

ABSTRACT:
Expanded gray scale information is recovered from quantized video input data in a raster scanned imaging system by utilizing an interpolation process to predict a gray scale value for each element of output data from the quantized levels of a m .times. n matrix of input data elements. The prediction matrix for each output data element includes the spatially corresponding input data element, together with vertically and horizontally input data elements.

REFERENCES:
patent: 3921204 (1975-11-01), Thompson

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