High-accuracy and fast new-format optical Hough transform

Paul Woodford; David P. Casasent

doi:10.1117/12.242002

7 June 1996 High-accuracy and fast new-format optical Hough transform

Paul Woodford, David P. Casasent

Proceedings Volume 2751, Hybrid Image and Signal Processing V; (1996) https://doi.org/10.1117/12.242002
Event: Aerospace/Defense Sensing and Controls, 1996, Orlando, FL, United States

Abstract

The accuracy of digital and optical Hough transform (HT) processors is analyzed. New correction techniques to achieve improved accuracy are addressed. A new output format optical HT system using computer generated holograms (CGHs) is described and analyzed and its accuracy is found to be superior to that of digital HT processors. Its speed is much faster; the CGH space bandwidth product (SBWP) requirements are much less than for other methods; CGH error sources are addressed; and simple multiple binary exposure CGH fabrication is found to be sufficient.

Citation Download Citation

Paul Woodford and David P. Casasent "High-accuracy and fast new-format optical Hough transform", Proc. SPIE 2751, Hybrid Image and Signal Processing V, (7 June 1996); https://doi.org/10.1117/12.242002

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