Fecha de publicación: -- Fuente: WIPO "tomato" A signal processing device includes a signal processing unit that performs, for a spectral sensor image that is a spectral image obtained by light receiving operation of a spectral sensor, overall output processing of outputting pixel data of all regions and all wavelengths for the spectral sensor image obtained in a first frame period, and thinning output processing of thinning out and outputting part of pixel data for the spectral sensor image obtained in a second frame period different from the first frame period.