公开(公告)号：US20180263479A1

公开(公告)日：2018-09-20

申请号：US15983091

申请日：2018-05-18

Applicant: OLYMPUS CORPORATION

Inventor： Koichiro ITO

IPC: A61B1/06 ,  H04N5/225 ,  H04N9/73 ,  H04N9/07 ,  A61B1/00 ,  A61B1/04

CPC classification number: A61B1/0638 ,  A61B1/00009 ,  A61B1/00186 ,  A61B1/04 ,  A61B1/0646 ,  G02B23/2469 ,  G02B23/2484 ,  H04N5/2256 ,  H04N5/2354 ,  H04N9/045 ,  H04N9/04521 ,  H04N9/07 ,  H04N9/735 ,  H04N2005/2255

Abstract: The resolution of narrow band imaging is improved, while color reproducibility is improved when performing white-light observation. Provided is an endoscope system including an image pickup device having three types of color filters, said types being blue, green, and magenta, and also including an image processor that generates an image by processing a signal acquired by the image pickup device. The image processor includes a ratio calculator that calculates the ratio between a blue signal and a magenta signal, and also includes a red-signal generator that generates a red signal based on the ratio calculated by the ratio calculator.

公开(公告)号：US20210393116A1

公开(公告)日：2021-12-23

申请号：US17462487

申请日：2021-08-31

Applicant: OLYMPUS CORPORATION

Inventor： Koichiro ITO

IPC: A61B1/00 ,  A61B1/05 ,  G06T3/40

Abstract: An endoscope device includes: an image sensor that has a first color filter and a second color filter and that acquires a first image signal based on a first light transmitted through the first color filter and a second image signal based on a second light transmitted through the second color filter; and one or more processors configured to: perform color separation processing and individual-difference correction processing; and respectively allocate the first and second image signals after the processings being performed to first and second channels of a color image signal. The color separation processing is processing in which the second and first light are subtracted from the first and second image signals, respectively. The individual-difference correction processing is processing in which, for each image signals, an error is corrected based on the difference in spectral characteristics between the color filter and a reference color filter.

公开(公告)号：US20210278658A1

公开(公告)日：2021-09-09

申请号：US17315439

申请日：2021-05-10

Applicant: OLYMPUS CORPORATION

Inventor： Takeshi ITO ,  Satoshi TANAKA ,  Koichiro ITO

IPC: G02B23/24 ,  G02B26/00 ,  A61B1/00 ,  A61B1/06

Abstract: An endoscope light source device includes a light source device and a light source controller. A first light and a second light are narrow band light in a blue region. A third light is in a green region. A fourth light is in a red region. A first light amount ratio is a ratio of a sum of the light amounts of the first light and the second light, the light amount of the third light, and the light amount of the fourth light. A second light amount ratio is a light amount ratio of the first light and the second light. The light source controller adjusts the light amount ratio of the first light and the second light to achieve the second light amount ratio so as to adjust the color representation from a yellow region to a red region in an image of an object.