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1 December 1991 Advanced in-plane rotation-invariant filter results
Gopalan Ravichandran, David P. Casasent
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Proceedings Volume 1567, Applications of Digital Image Processing XIV; (1991) https://doi.org/10.1117/12.50838
Event: San Diego, '91, 1991, San Diego, CA, United States
Abstract
Advanced filter algorithms using in-plane rotation invariance as an additional constraint during filter synthesis are presented. The new rotation-invariant Minimum Average Correlation Energy (RI-MACE) filter provides sharp, easily detected correlation peaks and excellent discrimination against other false objects. In the presence of background noise and clutter, the rotation-invariant Minimum Noise and Correlation Energy (RI-MINACE) filter (modified RI- MACE filter) uses the noise information during filter synthesis to obtain improved noise performance and also maintain easily detected correlation peaks. New test results are presented to show the improved discrimination capability of the RI-MACE filter and the improved noise performance of the RI-MINACE filter.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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Gopalan Ravichandran and David P. Casasent "Advanced in-plane rotation-invariant filter results", Proc. SPIE 1567, Applications of Digital Image Processing XIV, (1 December 1991); https://doi.org/10.1117/12.50838
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KEYWORDS
Image filtering
Detection and tracking algorithms
Optical filters
Signal to noise ratio
Digital image processing
Fourier transforms
Electronic filtering
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