ENDOSCOPE SYSTEM AND IMAGE GENERATION METHOD

摘要

The visibility of irregularities on the body tissue, such as a superficial microstructure or hypertrophy, is improved. Excitation light EL is emitted to a phosphor to excite and emit white light W. High absorption wavelength cut light is generated by removing components in high absorption wavelength bands A1 and A2, in which the absorption coefficient of hemoglobin in the blood is high, from the white light using a high absorption wavelength rejection filter. The subject is illuminated with the high absorption wavelength cut light, and image light of the reflected light is captured by a color CCD. A microstructure image is generated based on a signal Bp output from the B pixel of the CCD. In this microstructure image, the display of superficial microvessels is suppressed. Accordingly, the visibility of superficial microstructures, such as a pit pattern, is relatively improved.

主权项

1. An endoscope system, comprising:
an illumination unit that irradiates a subject with illumination light; an image signal acquisition unit that acquires an image signal by capturing image light of reflected light from the subject; an irregularity image generation unit that generates an irregularity image, in which visibility of irregularities on body tissue of the subject is relatively improved, by suppressing display of blood vessels in the subject based on the image signal; and wherein the irregularity image generation unit includes a microstructure image generation section that generates a microstructure image, in which visibility of superficial microstructures is relatively improved, by suppressing display of blood vessels based on a signal obtained by removing a component of a first high absorption wavelength band, in which an absorption coefficient of hemoglobin in blood is high, in a blue wavelength band from the image signal.