Patent ID: 7663668

Claim:
An imaging device comprising: color signal generating means for receiving incident light and outputting first red, green, and blue color signals corresponding to the incident light; and spectral sensitivity characteristic correction means for performing a matrix calculation, wherein said matrix calculation includes: multiplication of each of the first red, green, and blue color signals by corresponding coefficients respectively to obtain a first result; multiplication of color signals, obtained by raising the first red, green, and blue color signals to a power with a predetermined first constant as exponent, by corresponding coefficients respectively to obtain a second result; multiplication of color signals, obtained by raising the first red, green, and blue color signals to a power with a predetermined second constant, by corresponding coefficients respectively to obtain a third result; and adding the first, second, and third results for each of the first red, green, and blue color signals to generate second red, green, and blue color signals; and wherein the coefficients are determined so that total characteristics of the color signal generating means and the spectral sensitivity characteristic correction means approximate human chromatic curves or spectral sensitivity curves obtained by a linear transformation thereof, and correct for response characteristics of the color signal generating means in a near infrared region.