Patent ID: 7531789
Filing Date: 2009-05-12
Classification: G01J,H04N

Abstract:
1. An image processing device comprising: a spectral reflectance calculation unit that calculates a spectral reflectance within a wavelength range including wavelengths of visible light, for each of at least two types of irradiation light having respectively different spectral energy distributions, on the basis of intensities of reflection light from an object to be imaged when the object to be imaged is irradiated with at least two types of irradiation light and on the basis of irradiation intensities of at least two types of irradiation light; a color value calculation unit that obtains color values based on the spectral reflectances calculated by the spectral reflectance calculation unit; a coefficient calculation unit that calculates coefficients respectively for a plurality of predetermined eigenvectors where the color values are expressed by a linear combination between the plurality of predetermined eigenvectors, the coefficients, and spectral energies of at least two types of irradiation light; and an output unit that generates and outputs information corresponding to an estimation values within a wavelength range defined by excluding at least one of a low and a high wavelength ranges from the wavelength range including the wavelengths of visible light, the estimated value being one of estimation values of the spectral reflectances expressed by linear combination between the respective coefficients calculated by the coefficient calculation unit and the eigenvectors.