System for spatially transforming images

Details System for spatially transforming images System for spatially transforming images

1986-01-06

1990-03-13

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

358 22, 358166, 36472405, 3647241, 382 46, 382 54, G06K 932

Patent

active

049088742

ABSTRACT:
A system for spatially transforming images by separate transformation of each dimension of the image is exemplified by a raster scan television system which includes for each color component a transposing memory providing a change of scan direction from horizontal to vertical, a vertical transformation system transforming in the vertical direction the vertically scanned video information, a second transposing memory coupled to receive vertically transformed video information and provide a change of scan direction from vertical back to horizontal, and a horizontal transformation system coupled to horizontally transform the horizontally scanned video signal to produce a color component output signal. The transformation system is controlled by a transform composer and factorizor which receives input commands designating X and Y pretranslations, X and Y size control, Z axis rotation angles, and X and Y post translations to produce a commanded composite transformation which is then factored into horizontal and vertical components.

REFERENCES:
patent: 4052699 (1977-10-01), Micka et al.
patent: 4168488 (1979-09-01), Evans
patent: 4281347 (1981-07-01), Tschannen
patent: 4363104 (1982-12-01), Nussmeier
patent: 4550437 (1985-10-01), Kobayashi et al.

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