Resolution enhancement and zoom by degradation estimates

Details Resolution enhancement and zoom by degradation estimates Resolution enhancement and zoom by degradation estimates

1983-01-27

1985-05-14

Masinick, Michael A.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 37, H04N 514

Patent

active

045175993

ABSTRACT:
In this invention, the resolution is enhanced by first effectively decreasing the scan angle subtended between adjacent samples significantly below that of the Rayleigh limit to obtain an image blurred by the point spread function (or diffraction pattern) of the aperture. The next step is to process this blurred image to at least partially remove the blur. The unblurring process consists of convolving this finely sampled blurred image with a specially designed convolution mask. This mask effectively outputs an enhanced pixel at each step of the convolution.
The mask simultaneously performs the equivalent of the following operations:

REFERENCES:
patent: 4330833 (1982-05-01), Pratt
patent: 4402006 (1983-08-01), Karlock
patent: 4463381 (1984-07-01), Powell

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