Patents by Inventor Tomokazu OKI
Tomokazu OKI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11747278Abstract: A deposit detection device according to an embodiment includes a calculation module, a detection module, an interpolation module, and a state management module. The calculation module calculates a region feature amount based on an edge vector of each pixel, for each unit region composed of a predetermined number of pixels included in a captured image. The detection module detects the unit region corresponding to a partial covering location and the unit region corresponding to a diffuse reflection location based on a detection condition and a second detection condition, respectively, the first detection condition and the second detection condition being based on the region feature amount. The interpolation module interpolates the area ratio of the partial covering location reduced due to the diffuse reflection location. The state management module controls state transitions of states related to interpolation of the area ratio, based on increase and decrease of the diffuse reflection location.Type: GrantFiled: September 10, 2020Date of Patent: September 5, 2023Assignee: DENSO TEN LimitedInventors: Tomokazu Oki, Nobunori Asayama, Takashi Kono, Yasushi Tani, Daisuke Yamamoto, Nobuhisa Ikeda, Teruhiko Kamibayashi
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Patent number: 11530993Abstract: A deposit detection device according to an embodiment includes a detection module and an identification module. The detection module detects a small region as a candidate region for a deposit region corresponding to a deposit adhering to an imaging device, based on brightness information for each of small regions into which a predetermined region in an image captured by the imaging device is divided. The identification module identifies the candidate region as the deposit region when undulation change in brightness distribution of pixels included in the candidate region detected by the detection module is within a predetermined range.Type: GrantFiled: September 14, 2020Date of Patent: December 20, 2022Assignee: DENSO TEN LimitedInventors: Nobunori Asayama, Nobuhisa Ikeda, Takashi Kono, Yasushi Tani, Daisuke Yamamoto, Tomokazu Oki, Teruhiko Kamibayashi
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Patent number: 11354795Abstract: A deposit detection device according to an embodiment includes a detection module and a storage processing module. The detection module detects a deposit region corresponding to a deposit adhering to an imaging device, based on brightness information of an image captured by the imaging device. The storage processing module stores deposit information on the deposit region in a storage unit that is nonvolatile, when an ignition power of a vehicle is turned off in a state in which the deposit region is detected. For an initial detection process after the ignition power is turned on, the detection module detects the deposit region based on the deposit information stored in the storage unit.Type: GrantFiled: September 14, 2020Date of Patent: June 7, 2022Assignee: DENSO TEN LimitedInventors: Nobunori Asayama, Nobuhisa Ikeda, Takashi Kono, Yasushi Tani, Daisuke Yamamoto, Tomokazu Oki, Teruhiko Kamibayashi
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Patent number: 11308709Abstract: A deposit detection device according to an embodiment includes a detection module and a determination module. The detection module detects a deposit region including a deposit adhering to a lens of an imaging device from a captured image captured by the imaging device. The determination module performs maintenance determination as to whether to maintain a detection history of detection by the detection module, based on brightness information of the captured image.Type: GrantFiled: September 10, 2020Date of Patent: April 19, 2022Assignee: DENSO TEN LimitedInventors: Nobuhisa Ikeda, Nobunori Asayama, Takashi Kono, Yasushi Tani, Daisuke Yamamoto, Tomokazu Oki, Teruhiko Kamibayashi
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Patent number: 11288882Abstract: A deposit detection device according to an embodiment includes a detection module, a determination module, and an identification module. The detection module detects a deposit region corresponding to a deposit adhering to an imaging device, based on brightness information of an image captured by the imaging device. The determination module determines whether variation in brightness information in a predetermined region of the image is within a predetermined range, in a period after a vehicle is stopped in a state in which the deposit region is detected by the detection module. The identification module identifies brightness information serving as a determination criterion of the deposit region when the determination module determines that the variation in brightness information is within a predetermined range.Type: GrantFiled: September 11, 2020Date of Patent: March 29, 2022Assignee: DENSO TEN LimitedInventors: Nobunori Asayama, Nobuhisa Ikeda, Takashi Kono, Yasushi Tani, Daisuke Yamamoto, Tomokazu Oki, Teruhiko Kamibayashi
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Patent number: 11250553Abstract: A deposit detection device according to an embodiment includes a calculation module, an extraction module, and a decision module. The calculation module calculates a brightness average for each of small regions into which a predetermined region of an image captured by an imaging device is divided. The extraction module extracts, as a high-brightness region, the small region in which the brightness average calculated by the calculation module is equal to or larger than a predetermined value. The decision module decides on a brightness threshold value for detecting a deposit region corresponding to a deposit adhering to the imaging device, based on the area of the high-brightness region extracted by the extraction module.Type: GrantFiled: September 14, 2020Date of Patent: February 15, 2022Assignee: DENSO TEN LimitedInventors: Nobunori Asayama, Nobuhisa Ikeda, Takashi Kono, Yasushi Tani, Daisuke Yamamoto, Tomokazu Oki, Teruhiko Kamibayashi
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Patent number: 11182626Abstract: An attached object detection apparatus includes a setting part, a calculator, and a detector. A setting part sets a plurality of divided regions within a captured image captured by an image capturing apparatus. A calculator calculates, for each of the plurality of divided regions and based on luminance of pixels in the divided region, a representative luminance value and an amount of luminance dispersion. A detector detects, as an attached region that has an attached object, a divided region among the plurality of divided regions that satisfies the following conditions: i) a first difference is equal to or smaller than a first predetermined difference, ii) a second difference is equal to or smaller than a second predetermined difference, and iii) the representative luminance value of the current divided region is equal to or smaller than a first predetermined value.Type: GrantFiled: August 30, 2019Date of Patent: November 23, 2021Assignee: DENSO TEN LimitedInventors: Nobuhisa Ikeda, Nobunori Asayama, Takashi Kono, Yasushi Tani, Daisuke Yamamoto, Tomokazu Oki, Teruhiko Kamibayashi
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Patent number: 11170487Abstract: An adhered substance detection apparatus includes a controller configured to function as a determination part, an extractor, and a detector. The determination part determines a representative edge direction using a predetermined angle range as a unit for each pixel area of a plurality of pixel areas of a photographic image photographed by a photographing device, the representative edge direction being determined for each of the pixel areas based on an edge angle of each pixel included in the pixel area. The extractor extracts an array pattern in which a plurality of the pixel areas having a same representative edge direction are continuously arranged along a predetermined scanning direction based on the representative edge directions of the pixel areas determined by the determination part. The detector detects whether an adhered substance area exists on a lens of the photographing device based on the array pattern extracted by the extractor.Type: GrantFiled: October 31, 2019Date of Patent: November 9, 2021Assignee: DENSO TEN LimitedInventors: Nobuhisa Ikeda, Nobunori Asayama, Takashi Kono, Yasushi Tani, Daisuke Yamamoto, Tomokazu Oki, Teruhiko Kamibayashi
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Patent number: 11120291Abstract: An extraneous-matter detecting apparatus includes a region setting unit, a computing unit, a change-value setting unit, an updating unit, and a detection unit. The region setting unit sets divided regions for a captured image captured by an image capturing device. The computing unit computes, for a corresponding divided region, a first difference between a past representative value of luminance and a present representative value of luminance and a second difference between a past dispersion amount of luminance and a present dispersion amount of luminance. The change-value setting unit sets, based on the first and the second differences, a change value of a counter value that indicates an adhesion state of an extraneous matter in the divided region. The updating unit updates the counter value based on the change value. The detection unit detects, based on the counter value, an adhesion state of an extraneous matter in the divided region.Type: GrantFiled: September 10, 2019Date of Patent: September 14, 2021Assignee: DENSO TEN LimitedInventors: Nobuhisa Ikeda, Nobunori Asayama, Takashi Kono, Yasushi Tani, Daisuke Yamamoto, Tomokazu Oki, Teruhiko Kamibayashi
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Patent number: 11093786Abstract: An extraneous-matter detecting apparatus according to an embodiment includes a region setting unit, a computing unit, and a state setting unit. The region setting unit sets, for a captured image captured by an image capturing device provided in a vehicle, a plurality of divided regions. The computing unit computes a representative value of luminance in a target region for detecting an adhesion of an extraneous matter. The target region includes the plurality of divided regions. The state setting unit sets, based on a vehicle speed and the representative value of luminance in the target region, a transition state of information that indicates an adhesion state of an extraneous matter in the divided region.Type: GrantFiled: September 11, 2019Date of Patent: August 17, 2021Assignee: DENSO TEN LimitedInventors: Nobuhisa Ikeda, Nobunori Asayama, Takashi Kono, Yasushi Tani, Daisuke Yamamoto, Tomokazu Oki, Teruhiko Kamibayashi
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Patent number: 11037266Abstract: An attached substance detection device according to an embodiment includes a calculation unit and a determination unit. The calculation unit calculates a score of a divided region that is provided by dividing a predetermined target region, based on an edge intensity in each pixel region of a captured image that is captured by an image-capturing device. The determination unit determines whether or not the target region is an attached substance region where an attached substance is attached to a lens of the image-capturing device, based on the score that is calculated by the calculation unit.Type: GrantFiled: September 9, 2019Date of Patent: June 15, 2021Assignee: DENSO TEN LimitedInventors: Nobuhisa Ikeda, Nobunori Asayama, Takashi Kono, Yasushi Tani, Daisuke Yamamoto, Tomokazu Oki, Teruhiko Kamibayashi
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Patent number: 10997743Abstract: A decision part decides a representative edge direction using a predetermined angle range as a unit for each pixel area of a plurality of pixel areas of a photographic image photographed by a camera based on an edge angle of each pixel contained in the pixel area. An extractor extracts two of the pixel areas that are adjacent to each other as a pair area among the pixel areas of the photographic image, when the two pixel areas that are adjacent to each other have opposite representative edge directions. A determination part determines whether or not there is an attachable matter on a lens of the camera based on at least one of (1) a number of the pair areas extracted by the extractor and (2) a total sum of edge intensities of the pixel areas contained in the pair areas.Type: GrantFiled: December 5, 2019Date of Patent: May 4, 2021Assignee: DENSO TEN LimitedInventors: Nobuhisa Ikeda, Nobunori Asayama, Takashi Kono, Yasushi Tani, Daisuke Yamamoto, Tomokazu Oki, Teruhiko Kamibayashi
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Patent number: 10984273Abstract: An attachable matter detection apparatus includes a controller configured to function as an extractor and a detector. The extractor extracts edge information of each pixel contained in a photographic image photographed by an imaging device. The detector detects a candidate area estimated to have a water droplet out of the photographic image based on a matching result between (i) each of the pixels converted into a predetermined data format based on the edge information extracted by the extractor and (ii) a template representing a water droplet and having the data format. The detector calculates a matching frequency with the template for a predetermined area along a contour of the candidate area, and excludes the candidate area when the candidate area satisfies a predetermined exclusion condition based on the matching frequency.Type: GrantFiled: November 14, 2019Date of Patent: April 20, 2021Assignee: DENSO TEN LimitedInventors: Nobuhisa Ikeda, Nobunori Asayama, Takashi Kono, Yasushi Tani, Daisuke Yamamoto, Tomokazu Oki, Teruhiko Kamibayashi
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Patent number: 10970585Abstract: An adhering substance detection apparatus according to an embodiment includes a calculating unit and a determining unit. The calculating unit calculates, for each cell composed of a predetermined number of pixels in a captured image, an edge feature value that is based on edge vectors in the pixels, and that classifies an edge orientation that is included in the edge feature value, into two types of angle classes. The determining unit determines a condition of adhering substance adhering to an image capturing apparatus that captured the captured image, based on a transition count representing number of transitions the angle class goes through within a unit region that is a predetermined region composed of a predetermined number of the cells.Type: GrantFiled: September 5, 2019Date of Patent: April 6, 2021Assignee: DENSO TEN LimitedInventors: Nobuhisa Ikeda, Nobunori Asayama, Takashi Kono, Yasushi Tani, Daisuke Yamamoto, Tomokazu Oki, Teruhiko Kamibayashi
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Patent number: 10970592Abstract: An adhering substance detection apparatus includes calculating, first and second detecting, and generating units. The calculating unit calculates a variation in a feature value related to luminance in past and current captured images captured by an image capturing device, based on the luminance of pixels included in the captured images. The first detecting unit detects a first region in which the variation calculated by the calculating unit falls within a threshold range, and the feature value in the current captured image falls within a threshold range. The second detecting unit detects a second region in which an irregularity in a distribution of the luminance of the pixels included in the captured image satisfies a predetermined irregularity condition. The generating unit generates a sum region being a sum of the first and second regions, as an adhering substance region corresponding to an adhering substance adhering to the image capturing device.Type: GrantFiled: September 6, 2019Date of Patent: April 6, 2021Assignee: DENSO TEN LimitedInventors: Nobuhisa Ikeda, Nobunori Asayama, Takashi Kono, Yasushi Tani, Daisuke Yamamoto, Tomokazu Oki, Teruhiko Kamibayashi
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Publication number: 20210090237Abstract: A deposit detection device according to an embodiment includes a calculation module, an extraction module, and a decision module. The calculation module calculates a brightness average for each of small regions into which a predetermined region of an image captured by an imaging device is divided. The extraction module extracts, as a high-brightness region, the small region in which the brightness average calculated by the calculation module is equal to or larger than a predetermined value. The decision module decides on a brightness threshold value for detecting a deposit region corresponding to a deposit adhering to the imaging device, based on the area of the high-brightness region extracted by the extraction module.Type: ApplicationFiled: September 14, 2020Publication date: March 25, 2021Applicant: DENSO TEN LimitedInventors: Nobunori ASAYAMA, Nobuhisa IKEDA, Takashi KONO, Yasushi TANI, Daisuke YAMAMOTO, Tomokazu OKI, Teruhiko KAMIBAYASHI
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Publication number: 20210089809Abstract: A deposit detection device according to an embodiment includes a detection module, a determination module, and an identification module. The detection module detects a deposit region corresponding to a deposit adhering to an imaging device, based on brightness information of an image captured by the imaging device. The determination module determines whether variation in brightness information in a predetermined region of the image is within a predetermined range, in a period after a vehicle is stopped in a state in which the deposit region is detected by the detection module. The identification module identifies brightness information serving as a determination criterion of the deposit region when the determination module determines that the variation in brightness information is within a predetermined range.Type: ApplicationFiled: September 11, 2020Publication date: March 25, 2021Applicant: DENSO TEN LimitedInventors: Nobunori ASAYAMA, Nobuhisa IKEDA, Takashi KONO, Yasushi TANI, Daisuke YAMAMOTO, Tomokazu OKI, Teruhiko KAMIBAYASHI
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Publication number: 20210090236Abstract: A deposit detection device according to an embodiment includes a detection module and a storage processing module. The detection module detects a deposit region corresponding to a deposit adhering to an imaging device, based on brightness information of an image captured by the imaging device. The storage processing module stores deposit information on the deposit region in a storage unit that is nonvolatile, when an ignition power of a vehicle is turned off in a state in which the deposit region is detected. For an initial detection process after the ignition power is turned on, the detection module detects the deposit region based on the deposit information stored in the storage unit.Type: ApplicationFiled: September 14, 2020Publication date: March 25, 2021Applicant: DENSO TEN LimitedInventors: Nobunori ASAYAMA, Nobuhisa IKEDA, Takashi KONO, Yasushi TANI, Daisuke YAMAMOTO, Tomokazu OKI, Teruhiko KAMIBAYASHI
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Publication number: 20210089818Abstract: A deposit detection device according to an embodiment includes a detection module, an extraction module, and an identification module. The detection module detects a candidate region for a deposit region corresponding to a deposit adhering to an imaging device, based on brightness information for each of small regions into which a predetermined region in an image captured by the imaging device is divided. The extraction module extracts, as a boundary region, the small region in which a brightness difference value from the small region adjacent to the small region is equal to or larger than a predetermined threshold value, from among the small regions included in the candidate region detected by the detection module. The identification module identifies the candidate region as the deposit region when the number of boundary regions extracted by the extraction module satisfies a predetermined identification condition.Type: ApplicationFiled: September 11, 2020Publication date: March 25, 2021Applicant: DENSO TEN LimitedInventors: Nobunori ASAYAMA, Nobuhisa IKEDA, Takashi KONO, Yasushi TANI, Daisuke YAMAMOTO, Tomokazu OKI, Teruhiko KAMIBAYASHI
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Publication number: 20210088456Abstract: A deposit detection device according to an embodiment includes a detection module and an identification module. The detection module detects a small region as a candidate region for a deposit region corresponding to a deposit adhering to an imaging device, based on brightness information for each of small regions into which a predetermined region in an image captured by the imaging device is divided. The identification module identifies the candidate region as the deposit region when undulation change in brightness distribution of pixels included in the candidate region detected by the detection module is within a predetermined range.Type: ApplicationFiled: September 14, 2020Publication date: March 25, 2021Applicant: DENSO TEN LimitedInventors: Nobunori ASAYAMA, Nobuhisa IKEDA, Takashi KONO, Yasushi TANI, Daisuke YAMAMOTO, Tomokazu OKI, Teruhiko KAMIBAYASHI