Patent ID: 8125543

Claim:
A solid-state imaging device comprising: a first detecting portion that detects components of incident light with a first sensitivity and by dividing a wavelength region into a plurality of component wavelength regions; a second detecting portion that detects the incident light in the wavelength region with a second sensitivity that is higher than the first sensitivity and without dividing the wavelength region into the component wavelength regions; and a signal processing unit including a high sensitization signal processing portion (i) that acquires a first signal indicating a measured amount on the basis of a unit signal corresponding to each component detected in the first detecting portion and (ii) that executes a sensitivity correction operation on the unit signal corresponding to each component detected in the first detecting portion by using the first signal indicating the measured amount and a second signal of the component in the wavelength region, which signal has high sensitivity and is detected in the second detecting portion, wherein, the high sensitization signal processing portion includes a color signal interpolation processing portion that performs pixel interpolation processing, the signal processing unit further includes a correlation detecting portion that detects correlation of image information on the basis of the second signal of the component in the wavelength region, the correlation detecting portion calculates a horizontal and vertical correlation coefficient and an inclination correlation coefficient, and supplies the horizontal and vertical correlation coefficient and the inclination correlation coefficient to the high sensitization signal processing portion, the high sensitization signal processing portion executes the sensitivity correction operation using high-sensitivity information detected in the second detecting portion and performs processing for suppressing incorrect color information during an execution of demosaic processing for generating information, in which wavelength components or sensitivity is uniform, from mosaic shaped information, in which wavelength components or sensitivity varies, for all pixel positions, the demosaic processing including the pixel interpolation processing, and the processing for suppressing the incorrect color information being performed at least in the color signal interpolation processing portion at the time of the pixel interpolation processing, the pixel interpolation processing including performing a correlation correction for each of directions of interpolation processing, the directions including horizontal, vertical, and inclination directions, by referring to a respective correlation coefficient supplied from the correlation detecting portion.