Correlation detecting for indicating the correlation of vertical

Details Correlation detecting for indicating the correlation of vertical Correlation detecting for indicating the correlation of vertical

1988-10-05

1990-08-21

Chin, Tommy P.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 40, H04N 978

Patent

active

049511289

ABSTRACT:
Correlation of a video signal having a chrominance component is detected by combining three successive line intervals of the video signal to produce a first signal by obtaining the sum of the video signals of those three line intervals, combining at least two of those three line intervals to produce a second signal by obtaining the difference between the video signals of such two line intervals; detecting the absolute values of the first and second signals, respectively; and determining the difference between the absolute values of the first and second signals to produce a correlation indication signal.

REFERENCES:
patent: 4178609 (1979-12-01), Beutel
patent: 4348689 (1982-09-01), Achiha
patent: 4355333 (1982-10-01), Sato
patent: 4513311 (1985-04-01), Hirai
patent: 4570177 (1986-02-01), Kondo
patent: 4591911 (1986-05-01), Tanaka
patent: 4703342 (1987-10-01), Takahashi
patent: 4764964 (1988-06-01), Tanaka

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