Patents by Inventor Yasuhisa Hayakawa
Yasuhisa Hayakawa 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: 10096124Abstract: A water droplet detection device has an image capturing unit and a water droplet detection unit. The image capturing unit has a photographic optical system that an area captures an image of a predetermined area. The water droplet detection unit sets an arbitrary attention point in the captured image, a plurality of first reference points inside an imaginary circle of a predetermined radius having the attention point as a center the imaginary circle, and a plurality of second reference points corresponding to the first reference points outside the imaginary circle. The water droplet detection unit detects edge information between the first reference points and second reference points, and assesses a circularity strength of the edge information to detect a water droplet attached to the photographic optical system. The water droplet detection device can be used with an image conversion unit to form a three-dimensional object detection device.Type: GrantFiled: July 24, 2013Date of Patent: October 9, 2018Assignees: Nissan Motor Co., Ltd., Clarion Co., Ltd.Inventors: Yasuhisa Hayakawa, Osamu Fukata, Masayuki Takemura, Akira Utagawa, Shoji Muramatsu, Kota Irie
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Patent number: 9956941Abstract: An on-board device, that outputs a control signal to a cleaning control unit that controls accumulation removing units used to remove accumulations settled on a photographic lens in an on-board camera by adopting a plurality of methods, includes: an accumulation detection unit that detects an accumulation settled on the photographic lens from a photographic image output from the on-board camera when a vehicle speed input thereto is equal to or higher than a predetermined vehicle speed; a selection unit that selects an accumulation removing unit adopting a first method among the accumulation removing units adopting the plurality of methods; and a removal decision unit that makes a decision, based upon the photographic image, as to whether or not the accumulation has been removed from the photographic lens through a removal operation performed by the accumulation removing unit adopting the first method, which has been selected by the selection unit, wherein: if the removal decision unit decides that the accumulType: GrantFiled: July 3, 2013Date of Patent: May 1, 2018Assignees: Clarion Co., Ltd., Nissan Motor Co., Ltd.Inventors: Masahiro Kiyohara, Kota Irie, Katsuyuki Nakamura, Shoji Muramatsu, Masayuki Takemura, Osamu Fukata, Yasuhisa Hayakawa
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Patent number: 9862320Abstract: A three-dimensional object detection device has a camera, a three-dimensional object detection unit, a lens cleaning device, a lens state assessment unit and a controller. The camera has a lens for forming an image of an area rearward of a vehicle. The three-dimensional object detection unit detects a three-dimensional object rearward of the vehicle based on the captured images. The lens cleaning device sprays cleaning fluid to clean the lens of the camera. The lens state assessment unit accesses whether the lens is in a predetermined state subject to control based on a timing at which cleaning fluid is sprayed on the lens. The controller suppresses detection of the three-dimensional object by retaining detection or assessment results for a predetermined length of time that were obtained immediately before the lens was assessed to be in the state subject to control, upon assessment that the lens state is subject to control.Type: GrantFiled: July 24, 2013Date of Patent: January 9, 2018Assignee: Nissan Motor Co., Ltd.Inventors: Yasuhisa Hayakawa, Osamu Fukata
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Patent number: 9832444Abstract: A three-dimensional object detection device includes an image capturing unit, an image conversion unit, a three-dimensional object detection unit and a light source detection unit. The image conversion unit converts a viewpoint of the images obtained by the image capturing unit to create bird's-eye view images. The three-dimensional object detection unit detects a presence of a three-dimensional object within the adjacent lane. The three-dimensional object detection unit determines the presence of the three-dimensional object within the adjacent lane-when the difference waveform information is at a threshold value or higher. The three-dimensional object detection unit set a threshold value lower so that the three-dimensional object is more readily detected in a rearward area than forward area with respect to a line connecting the light source and the image capturing unit.Type: GrantFiled: February 26, 2013Date of Patent: November 28, 2017Assignee: Nissan Motor Co., Ltd.Inventors: Osamu Fukata, Yasuhisa Hayakawa
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Patent number: 9830519Abstract: A three-dimensional object detection device includes an image capturing unit, an image conversion unit, a three-dimensional object detection unit, a light source detection unit and a control unit. The image conversion unit converts a viewpoint of the images obtained by the image capturing unit to create bird's-eye view images. The three-dimensional object detection unit detects a presence of a three-dimensional object within the adjacent lane. The three-dimensional object detection unit determines the presence of the three-dimensional object within the adjacent lane-when the difference waveform information is at a threshold value or higher. The control unit set a threshold value higher so that the three-dimensional object is more difficult to detect in a forward area than rearward area with respect to a line connecting the light source and the image capturing unit when the light source has been detected.Type: GrantFiled: February 26, 2013Date of Patent: November 28, 2017Assignee: Nissan Motor Co., Ltd.Inventors: Yasuhisa Hayakawa, Osamu Fukata
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Patent number: 9804386Abstract: A camera device includes image capturing device, a lens cleaning device, an adhesion state assessment unit and a controller. The image capturing device is installed on a vehicle and has a lens for forming an image of the vehicle surroundings. The lens cleaning device cleans the lens by spraying a cleaning fluid on the lens in accordance with a predetermined lens cleaning step, in which at least a supply time for supplying cleaning fluid to the lens surface is predetermined. The adhesion state assessment unit is programmed to assess an adhesion state of contamination from a distribution of pixels corresponding to foreign matter adhered to the lens based on a captured image. The controller is programmed to extend the time until a time to start supplying the cleaning fluid in the lens cleaning step as the number of pixels corresponding to foreign matter adhered to the lens increases.Type: GrantFiled: July 26, 2013Date of Patent: October 31, 2017Assignees: Nissan Motor Co., Ltd., Clarion Co., Ltd.Inventors: Yasuhisa Hayakawa, Osamu Fukata, Masayuki Takemura, Masahiro Kiyohara, Shoji Muramatsu, Kota Irie
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Patent number: 9783127Abstract: A three-dimensional object detection device includes an image capturing unit, an image conversion unit, a three-dimensional object detection unit, a three-dimensional object assessment unit and a control unit. The image conversion unit converts a viewpoint of the images obtained by the image capturing unit to create bird's-eye view images. The three-dimensional object detection unit detects a presence of a three-dimensional object within the predetermined detection area by vehicle width direction detection processing. The three-dimensional object assessment unit assesses whether the three-dimensional object detected is another vehicle that is present within the predetermined detection area.Type: GrantFiled: February 13, 2013Date of Patent: October 10, 2017Assignee: Nissan Motor Co., Ltd.Inventors: Osamu Fukata, Yasuhisa Hayakawa
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Patent number: 9754172Abstract: A three-dimensional object detection device includes an image capturing unit, a detection area setting unit, an image conversion unit, a three-dimensional object detection unit, a reference image area setting unit, a contour information extraction unit, a reference sharpness calculation unit and a subject sharpness calculation unit. The image conversion unit converts a viewpoint of an image obtained by the image capturing unit to create a bird's-eye view image. The reference image area unit sets a reference image area for extracting contour information by the contour information extraction unit. The reference sharpness calculation unit calculates a reference sharpness using contour information of the reference image area. The subject sharpness calculation unit calculates a subject sharpness using contour information of the detection area.Type: GrantFiled: February 26, 2013Date of Patent: September 5, 2017Assignee: Nissan Motor Co., Ltd.Inventors: Yasuhisa Hayakawa, Osamu Fukata
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Patent number: 9740943Abstract: A three-dimensional object detection device can enhance the accuracy in detecting a three-dimensional object regardless of the brightness in the detection environment. The device has an image capture means that captures an image of a predetermined area and an image conversion means that converts the image through a viewpoint conversion into birds-eye view image. A first three-dimensional object detection means aligns positions of bird's-eye view images at different times obtained by the image conversion means, counts the number of pixels that exhibit a predetermined difference on a differential image of the aligned bird's-eye view images to generate a frequency distribution thereby creating differential waveform information, and detects a three-dimensional object on the basis of the differential waveform information.Type: GrantFiled: July 27, 2012Date of Patent: August 22, 2017Assignee: Nissan Motor Co., Ltd.Inventors: Yasuhisa Hayakawa, Osamu Fukata
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Patent number: 9726883Abstract: A three-dimensional object detection has an image capturing device, an image conversion unit, a three-dimensional object detection unit, a three-dimensional object assessment unit, first and second foreign matter detection units and a controller. The image capturing device captures images rearward of a vehicle. The three-dimensional object detection unit detects three-dimensional objects based on image information. The three-dimensional object assessment unit assesses whether or not a detected three-dimensional object is another vehicle. The foreign matter detection units detect whether or not foreign matter has adhered to a lens based on the change over time in luminance values for each predetermined pixel of the image capturing element and the change over time in the difference between an evaluation value and a reference value. The controller outputs control commands to the other means to suppress the assessment of foreign matter as another vehicle when foreign matter has been detected.Type: GrantFiled: July 12, 2013Date of Patent: August 8, 2017Assignees: Nissan Motor Co., Ltd, Clarion Co., Ltd.Inventors: Osamu Fukata, Yasuhisa Hayakawa, Masayuki Takemura, Akira Utagawa, Masahiro Kiyohara, Shoji Muramatsu, Kota Irie
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Patent number: 9721169Abstract: An image processing device includes: an image acquisition unit that obtains a photographic image of an area outside of a vehicle captured and output by a camera; a sun decision unit that calculates a sun position which indicates, at least, a solar elevation and makes a decision as to whether or not the solar elevation is equal to or lower than a predetermined elevation; an opacity detection unit that detects clouding of a lens surface of the camera; a vehicle detection unit that detects another vehicle, different from the vehicle, based upon image information of a first image area in the photographic image; and a control unit that suspends detection of the other vehicle by the vehicle detection unit if the opacity detection unit detects opacity in, at least, the first image area and the sun decision unit decides that the solar elevation is equal to or lower than the predetermined elevation.Type: GrantFiled: July 22, 2013Date of Patent: August 1, 2017Assignees: Clarion Co., Ltd., Nissan Motor Co., Ltd.Inventors: Masahiro Kiyohara, Katsuyuki Nakamura, Masayuki Takemura, Kota Irie, Yasuhisa Hayakawa, Osamu Fukata
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Patent number: 9721460Abstract: An in-vehicle surrounding environment recognition device includes: a photographic unit that photographs a road surface around a vehicle and acquires a photographic image; an application execution unit that recognizes another vehicle on the basis of the photographic image, and detects a relative speed of the other vehicle with respect to the vehicle; a reflection determination unit that, on the basis of the photographic image, determines upon presence or absence of a reflection of a background object from the road surface; a warning control unit that controls output of a warning signal on the basis of the result of recognition of the other vehicle; and a warning prevention adjustment unit that suppresses output of the warning signal on the basis of the relative speed of the other vehicle, if it has been determined that there is the reflection of the background object from the road surface.Type: GrantFiled: July 11, 2013Date of Patent: August 1, 2017Assignees: Clarion Co., Ltd., Nissan Motor Co., Ltd.Inventors: Masayuki Takemura, Akira Utagawa, Shoji Muramatsu, Masahiro Kiyohara, Yasuhisa Hayakawa, Osamu Fukata
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Patent number: 9690996Abstract: An on-vehicle image processor includes an imager mounted on a vehicle, an image convertor and compositor that converts images imaged by the imager into overhead images, a white line candidate area detector that detects a white line candidate area estimated to constitute a parking frame, an endpoint position detector that detects positions of endpoints, a vehicle behavior measurer that measures a movement amount of the vehicle, an endpoint movement position predictor that predicts moved positions of the endpoints detected by endpoint position detector, an endpoint movement amount judger, an endpoint position storage, a distance calculator that judges a degree of proximity of the endpoints, an information output device, an endpoint position oblivion judger that deletes the position of the endpoints satisfying a predetermined condition, a parking frame detector that detects a parking frame from the image, an accelerator opening degree detector and a vehicle behavior controller.Type: GrantFiled: November 21, 2013Date of Patent: June 27, 2017Assignee: Clarion Co., Ltd.Inventors: Akira Utagawa, Masahiro Kiyohara, Takehito Ogata, Satoshi Suzuki, Shoji Muramatsu, Yasuhisa Hayakawa, Osamu Fukata, Akira Morimoto
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Patent number: 9665781Abstract: A moving-body-detecting device is provided with an image capture unit, an image conversion unit, a three-dimensional-object-detecting unit, a turn detecting unit, and a control unit. The image capture unit captures images of the rear side of a vehicle. The image conversion unit performs viewpoint conversion of the captured images into bird's-eye view images. The three-dimensional-object-detecting unit generates differential waveform information based on a differential image of bird's-eye view images taken as different points in time, and detects three-dimensional objects based on the differential waveform information. The control unit suppresses detection of the three-dimensional object based on the differential waveform information, in cases in which turning of the vehicle has been detected as compared with cases in which the vehicle is not turning.Type: GrantFiled: July 27, 2012Date of Patent: May 30, 2017Assignee: Nissan Motor Co., Ltd.Inventors: Yasuhisa Hayakawa, Chikao Tsuchiya, Masanori Furuya, Osamu Fukata
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Patent number: 9643601Abstract: A driving assistance device improves the accuracy of driving assistance for parking. A traveling controller detects a line positioned on a road surface from a captured image captured by a camera. A parking frame is extracted from the detected line and acceleration suppression control of a vehicle is executed based on the extracted parking frame. At this time, the acceleration suppression control is cancelled if a crossing is detected based on the captured image.Type: GrantFiled: November 22, 2013Date of Patent: May 9, 2017Assignee: Nissan Motor Co., Ltd.Inventors: Akira Morimoto, Osamu Fukata, Yasuhisa Hayakawa, Daisuke Oiki, Daisuke Tanaka
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Patent number: 9616885Abstract: A vehicular acceleration suppression device reduces the degradation in the drive performance due to the acceleration suppression control activated outside the parking region. A parking frame line candidate which is a candidate of a parking frame line is extracted from a bird's-eye view image acquired by performing a bird's-eye view conversion on a captured image around a vehicle, and a parking frame line candidate corresponding line corresponding the parking frame line candidate is extracted from the captured image of the front of the vehicle. Then, the parking frame line candidate corresponding to the parking frame line candidate corresponding line length of which is longer than a parking frame line length threshold is eliminated from the candidate to be detected as the parking frame.Type: GrantFiled: November 22, 2013Date of Patent: April 11, 2017Assignee: Nissan Motor Co., Ltd.Inventors: Yasuhisa Hayakawa, Osamu Fukata, Akira Morimoto, Daisuke Oiki, Daisuke Tanaka
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Patent number: 9616856Abstract: A turbidity degree calculating unit calculates a degree of the white turbidity U on a surface of the lens based on a brightness gradient g of an image I (x, y), and a lens cleaning control unit sets a lens cleaning mode for spraying at least one of the cleaning fluid and the compressed air, which is performed by the lens cleaning unit, based on the calculated turbidity degree U.Type: GrantFiled: July 19, 2013Date of Patent: April 11, 2017Assignee: Clarion Co., Ltd.Inventors: Kota Irie, Shoji Muramatsu, Masayuki Takemura, Yasuhisa Hayakawa, Osamu Fukata, Akira Utagawa
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Patent number: 9604637Abstract: A vehicle acceleration suppression device and a vehicle acceleration suppression method are provided to be capable of suppressing a degradation in a drive performance and suppressing acceleration at the time of an incorrect manipulation of an accelerator, at the time of parking. Based on a parking frame certainty degree indicative of a degree of certainty that there is a parking frame in a vehicle travel direction and a parking frame entering certainty degree indicative of a degree of certainty that the vehicle enters the parking frame, a total certainty degree indicative of a total degree of certainty of the parking frame certainty degree and the parking frame entering certainty degree is set. As the total certainty degree is higher, a suppression degree of the vehicle acceleration to be controlled in response to a manipulation amount of an accelerator pedal manipulated by a driver to instruct a drive force is increased.Type: GrantFiled: November 22, 2013Date of Patent: March 28, 2017Assignee: Nissan Motor Co., Ltd.Inventors: Osamu Fukata, Yasuhisa Hayakawa, Akira Morimoto, Daisuke Tanaka, Daisuke Oiki
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Patent number: 9589193Abstract: A three-dimensional object detection device has an image capturing unit, a first object detection unit, a light source detection unit, a second object detection unit, a degree-of-clouding calculation unit and a controller. The image capturing unit captures images rearward of a vehicle. The first object detection unit detects a presence of a three-dimensional object from the captured images. The second object detection unit detects a presence of a three-dimensional object from a detection result of the light source detection unit. The degree-of-clouding calculation unit calculates a degree of lens clouding from the captured images. The controller assess the object as an adjacent vehicle in an adjacent lane from the degree of lens clouding when the degree of lens clouding is equal to or greater than a predetermined value and from the presence of the object in the captured images when the degree of lens clouding is less than the value.Type: GrantFiled: July 25, 2013Date of Patent: March 7, 2017Assignee: Nissan Motor Co., LtdInventors: Osamu Fukata, Yasuhisa Hayakawa
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Patent number: 9591274Abstract: A three-dimensional object detection device has an image capturing unit, an object detection unit, first and second edge intensity calculation units, a day/night assessment unit and a controller. The day/night assessment unit assess whether it is currently daytime or nighttime when detecting a three-dimensional object based on the captured images. Upon assesses it is daytime, edges of a subject are extracted from a first edge extraction area, including a horizon reference area, and a threshold value for detecting the three-dimensional object is set based on the intensity of the edges in the first edge extraction area. Upon assesses it is nighttime, the edges of a subject are extracted from a second edge extraction area, including a road edge reference area, and a threshold value for detecting the three-dimensional object is set based on the intensity of the edges that are extracted from the second edge extraction area.Type: GrantFiled: July 26, 2013Date of Patent: March 7, 2017Assignees: Nissan Motor Co., Ltd., Clarion Co., Ltd.Inventors: Yasuhisa Hayakawa, Osamu Fukata, Masayuki Takemura, Akira Utagawa, Shoji Muramatsu, Kota Irie