Patent ID: 9595117
Date: 2017-03-14
CPC Classifications: A61B,G02B,G06T,G16H,H04N

Claim:
1. An image processing device comprising: an image input section for inputting a first image, the first image including a first structure brighter than a mucous membrane and a second structure darker than the mucous membrane; and an image processor for performing a suppression process and a tone reversal process on the first image to produce a second image, a display of the second structure being suppressed in the suppression process, the first structure being darker than the mucous membrane in the second image, and the mucous membrane having substantially the same brightness as the second structure in the second image, wherein the image processor extracts the first structure and the second structure from at least one channel of three RGB channels which constitute the first image for generating a structure-extracted image signal in which a signal value is different between the first structure and the second structure in positive or negative to the mucous membrane, converts a negative input value of the structure-extracted image signal to a positive output value and converts a positive input value of the structure-extracted image signal to a positive or zero output value for generating a pre-suppression image, adds the pre-suppression image to at least one channel of the three RGB channels which constitute the first image for generating a second structure-suppressed image, and reverses gradation of RGB image data of the second structure-suppressed image for generating RGB image data of the second image.