Patent ID: 9107603
Filing Date: 2015-08-18
Classification: A61B

Abstract:
1. An electronic endoscope system comprising: an illumination section for applying illumination light to a portion to be observed inside a body, the portion including a surface blood vessel and a subsurface blood vessel located deeper than the surface blood vessel, the illumination light including blue light and green light, light absorption by the surface blood vessel being larger in a wavelength range of the blue light, light absorption by the subsurface blood vessel being larger in a wavelength range of the green light; an imaging section for capturing reflection light reflected from the portion, having a color image sensor which outputs a blue imaging signal corresponding to the blue light, a green imaging signal corresponding to the green light, and a red imaging signal corresponding to red light that is a smaller quantity of light absorbed by hemoglobin compared to the blue and green light, the color image sensor having color filters respectively corresponding to the blue, green, and red lights on each pixel; a suppression section for reducing contrast of the subsurface blood vessel in the green imaging signal by adding the red imaging signal to the green imaging signal; and an image generating section for generating an image based on at least the green imaging signal to which the red imaging signal is added and the blue imaging signal.