Abstract

The problem of detecting curves and target trajectories in 3-D space is examined. Techniques based on the Hough transform and a 3-D extension of it are presented. The effectiveness of the techniques for the detection of circles and circular missile trajectories given two arbitrary 2-D views (or given sequences of one range image of point target trajectories) is illustrated. Simulation results indicate that performance is excellent, even in the presence of gaps in the input data.

© 1989 Optical Society of America

Detection of target trajectories using the Hough transform

David Casasent and Raghuram Krishnapuram
Appl. Opt. 26(2) 247-251 (1987)

Hough transform projections and slices for object discrimination and distortion estimation

Raghuram Krishnapuram and David Casasent
Appl. Opt. 27(16) 3451-3460 (1988)

Optical implementation of the Hough transform by a matrix of holograms

P. Ambs, Sing H. Lee, Q. Tian, and Y. Fainman
Appl. Opt. 25(22) 4039-4045 (1986)

High-speed acousto-optic mapping modulator for the generalized Hough transform

David Casasent and Jeffrey Richards
Appl. Opt. 32(35) 7217-7224 (1993)

Detection of a general ellipse by an optical Hough transform

L. Feng and Y. Fainman
Appl. Opt. 31(17) 3259-3262 (1992)