1. An image processing apparatus, comprising: at least one imaging circuit that generates an image signal from an excitation light to which an object is exposed, the image signal including color components including at least first, second and third color components; a memory that stores color matrix information for correcting the color components of the image signal, the color matrix information corresponding to the excitation light from which the at least one imaging circuit generates the image signal, the matrix information being determined in advance based on spectral characteristics of the at least one imaging circuit; and circuitry that corrects color components of the image signal based on an amount of the first color component and the color matrix information.