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Performance measures for correlation filters

1990; Optica Publishing Group; Volume: 29; Issue: 20 Linguagem: Inglês

10.1364/ao.29.002997

0003-6935

B. V. K. Vijaya Kumar, Laurence G. Hassebrook,

Advanced Optical Imaging Technologies

Several performance criteria are described to enable a fair comparison among the various correlation filter designs: signal-to-noise ratio, peak sharpness, peak location, light efficiency, discriminability, and distortion invariance. The trade-offs resulting between some of these criteria are illustrated with the help of a new family of filters called fractional power filters (FPFs). The classical matched filter, phase-only filter (POF), and inverse filter are special cases of FPFs. Using examples, we show that the POF appears to provide a good compromise between noise tolerance and peak sharpness.