Patent ID: 8401297
Filing Date: 2013-03-19
Classification: G06K,G06N

Abstract:
1. An apparatus comprising a pattern recognizer further comprising: a first functional layer providing an image processor; a second functional layer extracting a feature based representation of one or more objects of interest; a third functional layer providing object class recognition; wherein image representations are maintained as complex-data values, the first functional layer comprises a complex gradient determination, the second functional layer comprises a complex conjugate chirp fourier transform, and the third functional layer is implemented using a complex valued neuron emulator based on a mixed mode signal processor comprising a complex multiplier, up converter, and dispersive delay line; and wherein the third functional layer further provides scale and orientation independence by sweeping over expected scales and orientations using a combination of scale zoom, angular shift and oriented templates, to generate a scatter plot of correlation peaks for each different object in the data base, and to determine a final correlation peak location by calculating a centroid of the correlation peaks, with the final peak value determined by adding all contributions from the correlation peaks.