Dithered image reconstruction

Details Dithered image reconstruction Dithered image reconstruction

1996-12-20

1998-11-17

Rogers, Scott

Image analysis

Applications

Target tracking or detecting

382270, 382312, 358406, 358466, 358474, 2502081, G06K 920, H04N 1195

Patent

active

058388133

ABSTRACT:
A dithered image reconstruction system and method that compensates for inter-detector errors in a manner that does not adversely affect detection of small-amplitude images in the presence of a very bright large-amplitude background. An overlapping dither pattern is employed in a detector array (103), and outputs generated by individual detectors (302) are adjusted in an iterative fashion to hold all outputs for a particular detector substantially constant, while allowing each set of outputs for each image section to converge on a solution. The system and method do not substantially distort the received signal, nor do they fail when the image characteristics have little spatial variation, such as when a large target area is being detected.

REFERENCES:
patent: 5514865 (1996-05-01), O'Neil
"Image Dithered Non-Uniformity Estimation and Correction", Robert D. Frey, Jr., LORAL Infrared and Imaging Systems, Mar. 1995.

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