1. A solid-state imaging device, comprising: a pixel array unit including first pixels and second pixels, the first pixels corresponding to respective color components of a plurality of color components, the second pixels having luminance components as main components, the first pixels and the second pixels being arranged regularly in a matrix; a pixel drive unit configured to drive the pixels arranged in the pixel array unit; and a signal processing unit configured to execute predetermined weighted addition processing and calculate a pixel value of an output image by using only pixel information acquired from the first pixels.