Patent ID: 8532376

Claim:
A signal processing system comprising: a base vector acquisition unit configured to perform an acquisition of a base vector based on spectral characteristics of a subject to be an identification object with spectral characteristics known; a separation unit configured to separate an image signal, which is composed of M kinds of color signals obtained by a color imaging system provided for subjects including the subject to be the identification object, into image signals of N kinds of wavelength areas, M and N being natural numbers, M≧3, M>N; a system spectral characteristics acquisition unit configured to perform an acquisition of spectral characteristics of an image acquisition system including spectral characteristics concerning the color imaging system and spectral characteristics concerning illumination light used in image acquisition of subjects by the color imaging system; a calculation unit configured to calculate a weighting coefficient concerning the base vector for each said wavelength area, based on the image signals of the N kinds of wavelength areas separated by the separation unit, the base vector acquired by the base vector acquisition unit, and the spectral characteristics of the image acquisition system acquired by the system spectral characteristics acquisition unit; and an output signal calculation unit configured to calculate an output signal as an identification result of the subject to be the identification object with the spectral characteristics known, based on the weighting coefficient concerning base vector for each said wavelength area calculated in the calculation unit; wherein the output signal calculation unit includes: a normalization unit configured to normalize the weighting coefficient concerning the base vector for each said wavelength area calculated in the calculation unit; a falsely-colored processing unit configured to assign a respective independent color to the weighting coefficient concerning the base vector for each said wavelength area normalized by the normalization unit; and an output unit configured to synthesize the weighting coefficients concerning the base vector for the wavelength areas, falsely-colored by the falsely-colored processing unit, and output the synthesized weighting coefficients as the output signal.