RESOLUTION ENHANCEMENT AND ZOOM BY DEGRADATION ESTIMATES

申请公布号：AU567445(B2)

申请号：AU19840025768

申请日期：1984.01.25

申请公布日期：1987.11.19

申请人：

HUGHES AIRCRAFT CO.,

发明人：ROBERT ZWIRN;EDWARD J. DRAGAVON;BRIAN SMITHGALL

分类号：H04N7/18;G06F;G06T1/00;G06T5/20;H04N;H04N5/14;H04N5/208

主分类号：H04N7/18

摘要：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: (1) blur the image again; (2) subtract this reblurred image from the original image to form degradation estimates; and (3) add the estimates of the losses back into the original image.

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