System for expedited computation of laplacian and gaussian filte

Details System for expedited computation of laplacian and gaussian filte System for expedited computation of laplacian and gaussian filte

1986-07-22

1992-06-02

Picard, Leo P.

Image analysis

Histogram processing

For setting a threshold

364725, 382 8, G06K 932

Patent

active

051194449

ABSTRACT:
Apparatus is disclosed for rapidly computing the Gaussian of Laplacian convolution of the point values in an image. Speed and hardward efficiency are achieved through the use of the separability of higher dimensional Gaussians, the binomial approximation to the one-dimensional Gaussian, the zero mean of Laplacian filtered signals, the reduced sampling requirements for low pass filtered signals, and a binary correlator that does many correlations in parallel, allows correction for geometric distortion and variable sampling density.

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Network Analysis, Mevan Valkenburg III Ed. 1974, Prentice-Hall, Inc. Englewood Cliffs, N.J.
H. K. Nishihara, "Practical Real-Time Imaging Stereo Matcher," Optical Engineering (1984) 23(5):536-545.
H. K. Nishihara et al., "Towards a Real Time Implementation of the Marr and Poggio Stereo Matcher," Image Understanding (1981) Proceedings of Workshop Sponsored by the Defense Advanced Research Projects Agency, Report No. SAI-82-391-WA, pp. 114-120.
H. K. Nishihara, "Intensity, Visible-Surface, and Volumeric Representations," Artificial Intelligence (1981) 17:265-284.

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