Patent attributes
Provided is an imaging device that can acquire a high-quality multispectral image with one image sensor. An imaging device includes: an image sensor (100) including a plurality of pixel blocks each of which includes n (n≥2) types of spectral filter elements having different spectral transmittances and m (2≤m≤3) types of polarization filter elements having different transmission polarization directions which are combined such that q (q=n×m) types of light are received by each pixel; an optical system (10) that includes k (k≤q) optical regions transmitting light in different wavelength bands and polarization filter units provided in each of the optical regions; and a signal processing unit (200) that processes a signal (pixel signal) of each pixel obtained from the image sensor (100) to generate an image of each optical region of the optical system (10). The signal processing unit (200) performs predetermined arithmetic processing on q pixel signals (x1, x2, . . . , Xq) obtained from each pixel block of the image sensor (100) to calculate k pixel signals (X1, X2, . . . , Xk) corresponding to each of the optical regions of the optical system (100) and generates an image of each optical region.
