Method of interpolating an image signal using a slope correlatio

Details Method of interpolating an image signal using a slope correlatio Method of interpolating an image signal using a slope correlatio

1991-11-26

1992-11-03

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358140, 358167, H04N 5208, H04N 701

Patent

active

051610167

ABSTRACT:
A method for interpolating an image signal using a slope correlation and the circuit thereof, in order to improve a picture quality by enhancing a vertical resolution. A slope correlation interpolation depending on a correlation degree between picture elements is performed for an image signal of a low frequency component, and a line interpolation is performed for an image signal of a high frequency component. Therefore, a vertical resolution is improved and hardware is decreased.

REFERENCES:
patent: 4706113 (1987-11-01), Ito
patent: 4967263 (1990-10-01), Dieterich
patent: 5057921 (1991-10-01), Robert
patent: 5095354 (1992-03-01), Sokawa

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