Correlation computing device for image signal

Details Correlation computing device for image signal Correlation computing device for image signal

1990-03-08

1991-09-03

Clark, David L.

Boots, shoes, and leggings

382 42, G06F 15336

Patent

active

050461796

ABSTRACT:
A correlation computing device includes a higher-order bit elimination circuit which receives a digital input image signal and provides an output signal in which higher-order bits up to 50% have been eliminated as a maximum word length of a digital input image signal. A representative point preservation memory temporarily stores the output signal from the higher-order bit elimination circuit. A correlation determining circuit determines a correlation between a signal stored in the representative point preservation memory and the output signal from the higher-order bit elimination circuit. A minimum-value address decision circuit selects a minimum value of the correlation determined by the correlation determining circuit and determines a motion vector for the digital input image signal.

REFERENCES:
patent: 4727506 (1988-02-01), Fling
patent: 4864629 (1989-09-01), Deering

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