ENDOSCOPE SYSTEM, ENDOSCOPE SYSTEM PROCESSOR DEVICE, OPERATION METHOD FOR ENDOSCOPE SYSTEM, AND OPERATION METHOD FOR ENDOSCOPE SYSTEM PROCESSOR DEVICE

摘要

The endoscope system includes: an image signal acquisition unit acquiring first image signal in first wavelength range where the amount of light absorption changes according to the concentration of yellow dye, second image signal in second wavelength range where the amount of light absorption changes according to the blood volume of an observation target, and third image signal in third wavelength range where a change in the amount of light absorption according to the concentration of the yellow dye is smaller than the first wavelength range and a change in the amount of light absorption according to the blood volume is smaller than the second wavelength range; a signal ratio calculation unit calculating first signal ratio based on the first and second image signals and calculating second signal ratio based on the second and third image signals; and a warning notification unit calculating a threshold value and generates warning signal.

主权项

1. An endoscope system, comprising:
an image signal acquisition unit that acquires a first image signal corresponding to a first wavelength range where an amount of light absorption changes according to concentration of yellow dye, a second image signal corresponding to a second wavelength range where the amount of light absorption changes according to a blood volume of an observation target, and a third image signal corresponding to a third wavelength range where a change in the amount of light absorption according to the concentration of the yellow dye is small compared with the first wavelength range and a change in the amount of light absorption according to the blood volume is small compared with the second wavelength range; a signal ratio calculation unit that calculates a first signal ratio for each pixel based on the first and second image signals and calculates a second signal ratio for each pixel based on the second and third image signals; and a warning notification unit that calculates a threshold value for comparison with the first signal ratio according to the second signal ratio and generates a warning signal for giving a warning for prompting cleaning of the observation target based on a comparison result between the first signal ratio and the threshold value.