OPTICAL COMPOSITE WAVELET-MATCHED FILTERS

The wavelet-matched filter performs the continuous wavelet transform f or edge feature enhancement and the correlation between two wavelet tr ansforms for pattern recognition in a single step. The composite wavel et-matched filter is a combination of the wavelet-matched filters, tha t yields desired outputs for a given set of training images. We presen t the definition, the iterative design algorithm, the quasiorthogonali ty of the components, and the optical implementation of the composite wavelet-matched filter. The filter yields a sharp correlation peak at the origin without sidelobe. A comparison between the composite wavele t-matched filter with the conventional composite filter is also given.