An image processing device includes a demosaicing section that receives an image that includes a first color signal, a second color signal, and a third color signal, and performs an interpolation process that interpolates a missing color signal among the first color signal, the second color signal, and the third color signal on each pixel of the image, and an image output section that outputs an output image based on an image obtained by the interpolation process and output from the demosaicing section. The demosaicing section performs a space-variant interpolation process that implements a different interpolation process depending on a pixel position on a first image that has information within a first wavelength band. The demosaicing section performs a space-invariant interpolation process that implements an interpolation process independently of a pixel position on a second image that has information within a second wavelength band.