Patent ID: 11963668
Assignee: OLYMPUS CORPORATION
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 15:
16. A color enhancement method comprising:
emitting light while switching light between first illumination light in which a light amount ratio of a plurality of kinds of light with different center wavelengths is set at a first light amount ratio and second illumination light in which the light amount ratio is set at a second light amount ratio different from the first light amount ratio;
generating a first image signal based on an image pickup signal obtained by picking up an image of a subject illuminated with the first illumination light;
generating a second image signal based on an image pickup signal obtained by picking up an image of the subject illuminated with the second illumination light;
generating a corrected image signal in which color is enhanced based on the first image signal and the second image signal; and
adjusting the second light amount ratio so that the second image signal related to a reference portion of the subject indicates achromatic color within a predetermined error range.