Electronic correlator

Details Electronic correlator Electronic correlator

1978-05-22

1980-03-11

Gruber, Felix D.

Boots, shoes, and leggings

250558, 364719, G06F 1534, G06G 719

Patent

active

041931173

ABSTRACT:
The invention concerns an electronic correlator for the evaluation of stereo-couples of photographs. Said electronic correlator comprises a normal correlator into which non-delayed signals are fed which in turn are derived from homologous points of each of the photographs of said stereo-couples. It further comprises an auto-correlator into which the image signals are fed non-delayed from the one photograph and delayed from the other photograph. A subtraction unit is connected to the normal correlator and to the auto-correlator. Furthermore two orthogonal correlators are provided into which the delayed and non-delayed image signals derived from the two photographs are fed crosswise delayed and non-delayed. The two orthogonal correlators are followed by a subtraction unit. By virtue of such an arrangement the trend inherent in the image signal functions to be correlated are taken into consideration and thus the quality of the image correlation is increased.

REFERENCES:
patent: 3473875 (1969-10-01), Bertram
patent: 3548210 (1970-12-01), Chapelle et al.
patent: 3554645 (1971-01-01), Bertram
patent: 3648039 (1972-03-01), Kowalski
patent: 4041293 (1977-08-01), Kihlberg

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