Patent ID: 11882995
Assignee: OLYMPUS CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC A  G  H | IPC A  G

Claim 7:
8. An endoscope system comprising:
a processor comprising hardware, the processor being connected to an endoscope configured to capture an image of return light of a first narrowband light and a second narrowband light from a subject to be examined, the first and second narrowband light being included in an observation target wavelength band ranging from a wavelength at which an absorption coefficient takes a local maximum value to a wavelength at which the absorption coefficient takes a local minimum value in a hemoglobin absorption characteristic of a living tissue, wherein the second narrowband light yields a lower absorption coefficient and a lower scattering coefficient by a living tissue than the first narrowband light, and to generate an image signal of the image,
wherein the processor is configured to:
generate a first image in which the bleeding area is emphasized, from the image signal; and
perform a second image generation processing of generating a second image, the second image generation processing comprising:
identify a first color of a first portion of the first image and a second color of a second portion of the first image by associating the first color with a first point in a color space and the second color with a second point in the color space, the first color corresponding to the bleeding area within the subject, the second color corresponding to an area other than the bleeding area within the subject;
correct the first color such that the first point associated with the first color is corrected to a third point associated with a color in the color space between hues of yellow and red-yellow; and
correct the second color such that the second point associated with the second color is corrected to a fourth point in the color space, wherein a first distance between the first point and the second point in the color space is substantially equal to a second distance between the third point and the fourth point.