ENDOSCOPE SYSTEM AND IMAGE GENERATION METHOD

摘要

Only irregularities on the body tissue, such as a superficial microstructure or a hypertrophy, are made clear. A blue signal B, a green signal G, and a red signal R are obtained by imaging a subject illuminated with white light W using a color CCD 44. Based on these signals B, G, and R, a brightness signal I ((B+G+R)/3) showing the average brightness of the subject is generated. A pixel region exceeding the fixed threshold value Th1 of the brightness signal I is extracted as a superficial microstructure P, such as a pit pattern. A superficial microstructure image 70 obtained by extracting the superficial microstructure P is displayed on a monitor 14.

主权项

1. An endoscope system, comprising:
an image signal acquisition unit that acquires an image signal by imaging a subject; and an irregularity image generation unit that generates an irregularity image by extracting only information of irregularities on the subject from the image signal; wherein the irregularity image generation unit includes a microstructure image generation section that generates a microstructure image as the irregularity image by extracting only a microstructure of a body tissue surface layer from the image signal; wherein the image signal is configured to include image signals of a plurality of colors having information of different wavelength components, the microstructure image generation section includes: a first brightness signal generation section that generates a brightness signal showing an average brightness of the subject based on the image signals of the plurality of colors; and a first image generation section that generates the microstructure image by extracting a pixel region, in which a pixel value exceeds a fixed threshold value, of the brightness signal as a microstructure.