Resolution enhancement and zoom

Details Resolution enhancement and zoom Resolution enhancement and zoom

1983-01-27

1985-07-30

Masinick, Michael A.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

382 42, 382 54, H04N 514

Patent

active

045325480

ABSTRACT:
In this invention, the resolution is enhanced first by 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 at least to partially remove the blur. The unblurring process consists of correlating each small segment of the blurred image with blurred images of preconstructed image primitives and then synthesizing a new image comprising a mosaic of spatially correlated original (unblurred) primitives. The blurred images of the primitives are obtained from a complete set of image primitives comprising, ideally, all possible unblurred primitive shapes. These primitives are then blurred by convolution with the point spread function of the aperture of the imager.

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

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