摘要
Pattern recognition with a circular harmonic filter (CHF) can have both the shift and rotation invariancet but it suffers lower signal noise ratio (SNR) as compared with a matched spatial filter (MSF). In order to improve the SNR of CHF, here a new filter, phase-only circular harmonic filter (POCHF) is presented and the reason why POCHF can improve the SNR of correlation peak by the point
<正> Pattern recognition with a circular harmonic filter (CHF) can have both the shift and rotation invariancet but it suffers lower signal noise ratio (SNR) as compared with a matched spatial filter (MSF). In order to improve the SNR of CHF, here a new filter, phase-only circular harmonic filter (POCHF) is presented and the reason why POCHF can improve the SNR of correlation peak by the point spread
