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

Claim 0:
1. An endoscope system comprising:
an endoscope;
a light source apparatus; and
a processing apparatus, wherein
the light source apparatus includes a plurality of semiconductor light emitting devices configured to emit light with different center wavelengths and causes the plurality of semiconductor light emitting devices to emit light at a certain light amount ratio to generate illumination light,
the endoscope includes an image pickup device configured to pick up an image of return light from a subject irradiated with the illumination light to generate an image pickup signal having a plurality of color components,
the processing apparatus includes a processor,
the processor is configured to execute:
controlling the light source apparatus to switch light between first illumination light emitted at a first light amount ratio and second illumination light emitted 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; and
generating a corrected image signal in which color is enhanced based on the first image signal and the second image signal, and
the second illumination light is light obtained by 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.