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公开(公告)号：US20190125174A1
公开(公告)日：2019-05-02
申请号：US16095645
申请日：2017-07-25
Applicant: HOYA CORPORATION
Inventor： Takao MAKINO
Abstract: An electronic endoscope system includes: an imaging element for imaging a subject illuminated alternately with narrow-band light and broadband light; generating, as a first image signal, an image signal of the subject imaged during an illumination period of the narrow-band light; and generating, as a second image signal, an image signal of the subject imaged during an illumination period of the broadband light. The system also includes a signal processing circuit for generating a high-intensity image signal by adding the first and second image signals together; for generating a low-intensity image signal by adding the first and second image signals together after a signal level of the second image signal is reduced and for generating an HDR image signal using the high-intensity and low-intensity image signals.
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公开(公告)号：US20170273543A1
公开(公告)日：2017-09-28
申请号：US15505753
申请日：2016-08-12
Applicant: HOYA CORPORATION
Inventor： Takao MAKINO
CPC classification number: A61B1/00009 , A61B1/00048 , A61B1/04 , G06T5/001 , G06T7/0012 , G06T7/207 , G06T2207/10024 , G06T2207/10068 , G06T2207/30028 , G06T2207/30096
Abstract: An electronic endoscope system includes a plotting unit which plots pixel correspondence points, which correspond to pixels that constitute a color image that has multiple color components, on a first color plane according to color components of the pixel correspondence points, the first color plane intersecting the origin of a predetermined color space; an axis setting unit which sets a predetermined reference axis in the first color plane; a transform unit which defines a second color plane that includes the reference axis, and subjecting the pixel correspondence points on the first color plane to projective transformation onto the second color plane; and an evaluation value calculating unit which calculates a prescribed evaluation value with respect to the color image based on the pixel correspondence points subjected to projective transformation onto the second color plane.
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公开(公告)号：US20230301491A1
公开(公告)日：2023-09-28
申请号：US17768742
申请日：2020-09-25
Applicant: HOYA CORPORATION
Inventor： Yoshihiro HAYASHI , Takao MAKINO
IPC: A61B1/00 , A61B1/06 , A61B1/05 , A61B1/045 , H04N23/72 , H04N23/76 , H04N23/74 , G06T7/00 , H04N23/73 , H04N23/68
CPC classification number: A61B1/000095 , A61B1/00045 , A61B1/045 , A61B1/05 , A61B1/0655 , A61B1/0661 , G06T7/0012 , H04N23/6811 , H04N23/683 , H04N23/72 , H04N23/73 , H04N23/74 , H04N23/76 , G06T2207/10068 , G06T2207/30004 , G06T2207/30168
Abstract: An endoscope system includes: a light source device; an electronic endoscope including an image sensor that images a biological tissue by a rolling shutter method; and a processor including an adjustment unit that is a part adjusting luminance of the frame image by combining adjustment of an exposure time of the image sensor with at least one of adjustment of light intensity of the illumination light and gain adjustment for determining a signal level of the frame image obtained from the image sensor, the adjustment unit determining whether or not a motion amount of an object image in the captured image or information regarding a blurring amount satisfies an adjustment condition and performing the adjustment processing by adjusting an adjustment level representing a degree of strength of the adjustment processing by a magnitude of a value according to at least the determination result.
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公开(公告)号：US20230113382A1
公开(公告)日：2023-04-13
申请号：US18082143
申请日：2022-12-15
Applicant: HOYA CORPORATION
Inventor： Takao MAKINO
Abstract: An electronic endoscope system includes a plotting unit which plots pixel correspondence points, which correspond to pixels that constitute a color image that has multiple color components, on a first color plane according to color components of the pixel correspondence points, the first color plane intersecting the origin of a predetermined color space; an axis setting unit which sets a predetermined reference axis in the first color plane; a transform unit which defines a second color plane that includes the reference axis, and subjecting the pixel correspondence points on the first color plane to projective transformation onto the second color plane; and an evaluation value calculating unit which calculates a prescribed evaluation value with respect to the color image based on the pixel correspondence points subjected to projective transformation onto the second color plane.
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公开(公告)号：US20220296123A1
公开(公告)日：2022-09-22
申请号：US17834098
申请日：2022-06-07
Applicant: HOYA CORPORATION
Inventor： Takao MAKINO , Yousuke IKEMOTO
Abstract: An electronic endoscope processor includes a converting means for converting each piece of pixel data that is made up of n (n≥3) types of color components and constitutes a color image of a biological tissue in a body cavity into a piece of pixel data that is made up of m (m≥2) types of color components, m being smaller than n; an evaluation value calculating means for calculating, for each pixel of the color image, an evaluation value related to a target illness based on the converted pieces of pixel data that are made up of m types of color components; and a lesion index calculating means for calculating a lesion index for each of a plurality of types of lesions related to the target illness based on the evaluation values calculated for the pixels of the color image.
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Patent Agency Ranking
公开(公告)号：US20210161363A1
公开(公告)日：2021-06-03
申请号：US17267686
申请日：2020-03-11
Applicant: HOYA CORPORATION
Inventor： Takao MAKINO
Abstract: An endoscope processor or the like is provided which has a high ability to detect lesions. The endoscope processor includes an image acquisition unit that acquires a captured image taken by an endoscope, a first image processing unit that generates a first processed image based on the captured image acquired by the image acquisition unit, a second image processing unit that generates a second processed image based on the captured image, and an output unit that outputs an acquired disease status using a learning model, which outputs a disease status, when the first processed image generated by the first image processing unit and the second processed image generated by the second image processing unit are input.
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公开(公告)号：US20210133974A1
公开(公告)日：2021-05-06
申请号：US16963405
申请日：2019-02-06
Applicant: HOYA CORPORATION
Inventor： Takao MAKINO
Abstract: An endoscope system includes an image processing unit obtaining a severity of a lesion of a biological tissue in which a degree of lesion is digitized, from an image of the biological tissue that is obtained by imaging the biological tissue in a body cavity. The image processing unit includes a feature amount calculation unit calculating a plurality of pixel evaluation values corresponding to a plurality of features of an appearance, which are capable of discriminating each of the plurality of features of the appearance from a feature of a normal portion of the biological tissue by a shape and indicate each degree of plurality of features relevant to the color component indicated by the lesion portion or the color component and the shape, a representative value calculation unit calculating a representative evaluation value corresponding to each of the plurality of features of the imaged biological tissue.
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公开(公告)号：US20200345205A1
公开(公告)日：2020-11-05
申请号：US16642601
申请日：2018-11-02
Applicant: HOYA CORPORATION
Inventor： Takao MAKINO , Jurgen GLATZ
Abstract: A processor for an electronic endoscope includes: a region detection unit configured to detect an enhancement processing target region to be enhanced from pixel information of a captured image of a living tissue; and an enhancement processing unit configured to perform enhancement processing on the enhancement processing target region detected by the region detection unit. The region detection unit is configured to repeat a candidate extraction process of extracting a focused pixel as a candidate for an enhancement processing target region when a signal level value of the focused pixel is smaller than signal level values of two farthest pixels located on both sides farthest from the focused pixel in any one of a plurality of pixel array directions in a region surrounded by a frame surrounding a region with the focused pixel as a center while changing a size of the frame.
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公开(公告)号：US20200008652A1
公开(公告)日：2020-01-09
申请号：US16489532
申请日：2018-03-26
Applicant: HOYA CORPORATION
Inventor： Takao MAKINO
Abstract: An electronic endoscope system includes: an electronic endoscope including an image sensor that images a living tissue; a processor that performs image processing on an image obtained by imaging the living tissue; and a display that displays the image on which image processing has been performed. The processor includes: a feature amount calculation unit that calculates, as a feature amount, a ratio between differences of values of two color signals out of a plurality of color signals of each of pixels of the image from a reference value; and an image enhancement processing unit that enhances the image by determining a degree of increase or decrease of at least one of the values of the two color signals on the basis of the calculated ratio so as to perform enhancement processing on the image.
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公开(公告)号：US20180174283A1
公开(公告)日：2018-06-21
申请号：US15738226
申请日：2016-06-01
Applicant: HOYA CORPORATION
Inventor： Takao MAKINO
CPC classification number: G06T5/009 , A61B1/00006 , A61B1/00009 , A61B1/05 , A61B1/0638 , A61B1/0669 , A61B1/07 , G06T7/20 , G06T7/97 , G06T2207/10024 , G06T2207/10068 , G06T2207/10152 , G06T2207/30004 , H04N5/2256 , H04N5/232 , H04N9/04 , H04N2005/2255
Abstract: An image detection device executing a detection process for images of a subject obtained by illuminating cyclically the subject with light having different spectral properties and capturing the subject at timings synchronizing with illuminating cycles of the light, the image detection device comprising a shift vector detection means that detects a shift vector of the subject based on a comparison result between an image of the subject captured at a current cycle and an image of the subject which is captured at a past cycle and is illuminated with the light having a same spectral property as that of the light illuminated at the current cycle.
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