Patent ID: 9629530
Date: 2017-04-25
CPC Classifications: A61B,G02B,H04N

Claim:
1. An endoscope apparatus comprising: an endoscope insertion section to be inserted into a subject; a first light emitting element that generates first illumination light for the subject; a second light emitting element that generates second illumination light for the subject; a first illumination lens disposed at a distal end portion of the endoscope insertion section to emit the first illumination light to the subject; a second illumination lens disposed at a position different from a position of the first illumination lens at the distal end portion of the endoscope insertion section to emit the second illumination light to the subject from a position different from an emitting position of the first illumination light by the first illumination lens; an image pickup section that picks up an optical image of the subject illuminated by the first and second illumination lights; a first color-balance measuring section that, on the basis of a video signal related to the optical image of the subject picked up by the image pickup section, measures a color balance of the video signal corresponding to a first region where illumination by the first illumination light is predominant on an endoscopic image related to the video signal and calculates a first color balance value; a second color-balance measuring section that measures a color balance of the video signal corresponding to a second region where illumination by the second illumination light is predominant on the endoscopic image and calculates a second color balance value; and a color-balance correcting section that applies, on the basis of the first and second color balance values, correction processing to each of the video signal corresponding to the first region and the video signal corresponding to the second region to set an entirety of the endoscopic image to a predetermined color balance.