公开(公告)号：US20240415428A1

公开(公告)日：2024-12-19

申请号：US18817446

申请日：2024-08-28

Applicant: OLYMPUS CORPORATION

Inventor： Koki MORISHITA ,  Hiromi TAKAHASHI

IPC: A61B5/1455

Abstract: An image processing apparatus includes a processor having hardware. The processor acquires a first image, a second image, and a third image of living tissue irradiated with first light, second light, and third light, respectively, calculates an index value that is correlated with a blood volume in the living tissue based on signal values of the first image and the second image, and calculates oxygen saturation of the living tissue based on the index value and a signal value of the third image. Each of the first light and the second light has a wavelength at which an absorption coefficient of oxygenated hemoglobin and an absorption coefficient of deoxygenated hemoglobin are the same, and the third light has a wavelength at which the absorption coefficients of the oxygenated hemoglobin and the absorption coefficient of the deoxygenated hemoglobin are different from each other.

公开(公告)号：US20240188794A1

公开(公告)日：2024-06-13

申请号：US18585612

申请日：2024-02-23

Applicant: OLYMPUS CORPORATION

Inventor： Hiromi TAKAHASHI ,  Koki MORISHITA

IPC: A61B1/00 ,  A61B1/06 ,  G06T7/00

CPC classification number: A61B1/000094 ,  A61B1/00048 ,  A61B1/0638 ,  G06T7/00 ,  G06T2207/10068

Abstract: A biological-image generating method includes: acquiring first and second images of biological tissue respectively irradiated with first and second illumination light; and generating a biological image from the first and second images. The first illumination light has a wavelength which is selected from a range between 500 nm and 600 nm and at which reflectance thereof is not dependent on an oxygen saturation. The second illumination light has a wavelength which is selected from a range between 600 nm and 800 nm and at which reflectance thereof is dependent on the oxygen saturation. The generating includes: calculating an indicator value expressing the oxygen saturation from a first pixel value of each pixel in the first image and a second pixel value of each pixel in the second image; and allocating a display mode corresponding to the indicator value to each pixel of the biological image.

公开(公告)号：US20190269299A1

公开(公告)日：2019-09-05

申请号：US16418249

申请日：2019-05-21

Applicant: OLYMPUS CORPORATION

Inventor： Hiromi TAKAHASHI

IPC: A61B1/00 ,  A61B1/04 ,  A61B1/06 ,  G16H30/40 ,  G06T7/00

Abstract: An endoscope image processing device includes a processor including hardware programmed to: enlarge or reduce multiple color component images constituting a normal light image, and a narrow-band light image; generate a blended image by synthesizing one of the enlarged or reduced color component images and the enlarged or reduced narrow-band light image; and generate a color superimposed image by synthesizing the blended image and the other enlarged or reduced color component images. The processor is programmed to replace some of pixels of the one color component image with corresponding pixels of the narrow-band light image such that distribution of pixels of the one color component image and pixels of the narrow-band light image is substantially uniform over the blended image.