Graphic data processor

Details Graphic data processor Graphic data processor

1985-07-17

1988-10-25

Lall, Parshotam S.

Boots, shoes, and leggings

364726, 364576, 382 43, 73620, G06G 719

Patent

active

047808314

ABSTRACT:
A graphic data processor for processing two-dimensional signals or one-dimensional signals such as observed graphic data. One graphic data processor includes circuitry for effecting two-dimensional Fourier conversion of the observed graphic data signals such that components occur with respect to first through fourth image limits on the resultant two-dimensional Fourier plane; circuitry for forming processed graphic data including circuitry for nullifying all but one of the components from the first through fourth image limits and circuitry for effecting two-dimensional inverse Fourier conversion on the one component to derive the processed graphic data; circuitry for determining the phase component of the processed graphic data; and circuitry for determining the local gradient of said phase component.
Another graphic data processor includes circuitry for effecting one-dimensional Fourier conversion of the observed graphic data signals; circuitry for forming processed graphic data including circuitry for nullifying negative components, leaving positive components and circuitry for effecting one-dimensional inverse Fourier conversion on one component to drive the processed graphic data; circuitry for determining the phase component of the processed graphic data; and circuitry for determining the instantaneous frequency.

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Kowel et al.: Programmable Multifunction Processor, SPIE, vol. 178, pp. 196-203, 17-18, Apr., 1979.

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