Patent ID: 8915844

Claim:
An endoscope diagnostic apparatus comprising: a light source unit which emits white light and two or more kinds of excited light with different center wavelengths for emitting two or more kinds of self-fluorescence from a self-fluorescent material included in a region to be observed of a subject; an imaging unit which, when white light is irradiated onto the region to be observed of the subject from the light source unit, receives reflected light of white light from the region to be observed of the subject to image a normal light image, and when the two or more kinds of excited light are irradiated onto the region to be observed of the subject from the light source unit, receives self-fluorescence emitted from the self-fluorescent material included in the region to be observed of the subject to image self-fluorescent images; and a light source control unit configured to: calculate the amount of absorption of the two or more kinds of excited light by blood; determine a compensation coefficient for each of the two or more kinds of excited light; compensate the ratios of emission intensity of the two or more kinds of excited light using the determined compensation coefficients so as to exclude the influence of absorption of light by blood in each of the two or more kinds of excited light.