Patent Document ID: 9269024
Application ID: 13018409

Base Claim:
1. A method for signal processing, comprising: obtaining a plurality of signals related to a plurality of subjects; extracting, using at least one processor, one or more generic features of the subjects based on the signals; training, based on the one or more generic features, a first dictionary used to recognize the subjects, wherein the first dictionary is applied in an initial level of reconstruction of the signals; removing, using the at least one processor, the generic features from the plurality of signals to obtain one or more updated patterns for each subject; obtaining a set of discriminative features for each subject based on the updated patterns; and adding, based on the set of discriminative features, one or more second dictionaries used to recognize the subjects, wherein the one or more second dictionaries are applied at a level of reconstruction of the signals subsequent to the initial level.

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Claim 4:
4. The method of claim 1 , further comprising: training, based on the obtained sets of discriminative features, another dictionary of the one or more second dictionaries comprising a plurality of sub-dictionaries, each sub-dictionary comprising one of the sets of discriminative features, and wherein the other dictionary is used to recognize the subjects at a final level of reconstruction of the signals.