50. The computer-readable medium as recited in claim 49 , further comprising selectively cropping at least one of the plurality of sub-band portions.
49. The computer-readable medium as recited in claim 48 , wherein the SVM filter process is configured to reduce redundancy in a feature space associated with at least one intermediate candidate portion, and performs wavelet transformation of the at least one intermediate candidate portion to produce a plurality of sub-bands portions.