Signal processing system using recursive radon video transform p

Details Signal processing system using recursive radon video transform p Signal processing system using recursive radon video transform p

1991-12-16

1994-05-03

Couso, Jose L.

Image analysis

Histogram processing

For setting a threshold

382 42, 382 46, 36441319, 36441321, 364421, G06K 936, G06K 964, G06K 932, G06K 1500

Patent

active

053095200

ABSTRACT:
A recursive Radon video transform processor, for detecting signal responses from objects to be recognized, generates a special manifold of the response data for Radon transformation of the stored data before operation thereon by a subsequent enhancement process, prior to display or other utilization. Each Cartesian data point contributes to multiple Radon transforms, so that the recursive Radon transform video implementation only processes the newest and oldest lines of data to update the transform for a given sliding window in the data manifold. For a data line of fixed length .rho., and with each of a set of N separate angular subprocessors operating, the pixel X value of the first and the last data rows are offset by a window size (w=x* tan .theta..sub.i), where .theta..sub.i is the transform angle for a particular subprocessor, as determined by a desired resolution, so that window size variations are implemented by a programmable change in time delay.

REFERENCES:
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patent: 5101270 (1992-03-01), Boone et al.
patent: 5124914 (1992-06-01), Grangeat
patent: 5136660 (1992-08-01), Flickner et al.

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