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公开(公告)号：US20230350068A1
公开(公告)日：2023-11-02
申请号：US18220958
申请日：2023-07-12
Inventor： Shigeru SAITOU , Shinzo KOYAMA , Yusuke YUASA
IPC: G01S17/894 , G01S7/4865 , G06T7/11 , G06V10/75 , G06T7/50
CPC classification number: G01S17/894 , G01S7/4865 , G06T7/11 , G06V10/751 , G06T7/50 , G06T2207/10028 , G06T2207/20021
Abstract: The present disclosure allows evaluation on the reliability of a distance value in a distance image, using a distance measuring device that generates a distance image from a plurality of section images. A reliability calculator obtains a maximum signal amount and a background signal amount from signal amounts in the section images for each pixel of the distance image to calculate, as reliability of distance determination, a difference between the maximum signal amount and the background signal amount. As the reliability of distance determination, an analog amount can be obtained which serves as an index of the reliability of the distance value indicated by the distance image.
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公开(公告)号：US20220011437A1
公开(公告)日：2022-01-13
申请号：US17486863
申请日：2021-09-27
Inventor： Shinzo KOYAMA , Yutaka HIROSE , Toru OKINO , Shigeru SAITOU , Motonori ISHII , Akihiro ODAGAWA
IPC: G01S17/894 , G01S17/36 , G01S7/4865
Abstract: A distance measuring device includes a control unit and a measuring unit. The control unit controls a photodetector unit. The photodetector unit includes a photoelectric transducer element and an output unit. The photoelectric transducer element generates electrical charges on receiving light reflected from a target as a part of measuring light emitted from a light-emitting unit. The output unit outputs an electrical signal representing a quantity of the electrical charges generated by the photoelectric transducer element. The measuring unit calculates, in accordance with the electrical signal, a distance to the target within a measurable range. The control unit sets, in each of a plurality of intervals that form the measurable range, a conversion ratio of the quantity of the electrical charges generated by the photoelectric transducer element to a quantity of the light received by the photoelectric transducer element.
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公开(公告)号：US20200097702A1
公开(公告)日：2020-03-26
申请号：US16494742
申请日：2018-03-12
Inventor： Shigeru SAITOU , Shinzo KOYAMA , Masato TAKEMOTO , Motonori ISHII
Abstract: An image recognition device includes: a luminance image generator and a distance image generator that generate a luminance image and a distance image, respectively, based on an image signal of an imaging target object output from a photoreceptor element; a target object recognition processor that extracts a target-object candidate from the luminance image using a machine learning database; and a three-dimensional object determination processor that uses the distance image to determine whether the extracted target-object candidate is a three-dimensional object. If it is determined that the target-object candidate is not a three-dimensional object, the target-object candidate extracted from the luminance image is prevented from being used, in the machine learning database, as image data for extracting a feature value of a target object.
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公开(公告)号：US20180306954A1
公开(公告)日：2018-10-25
申请号：US16010954
申请日：2018-06-18
Inventor： Shinzo KOYAMA , Motonori ISHII , Shigeru SAITOU , Masato TAKEMOTO , Tsuyoshi TANAKA
CPC classification number: G02B5/282 , B60J1/00 , B60J1/001 , B60J1/02 , B60J1/18 , B60J1/20 , B60R11/02 , B60Y2400/3015 , G01S7/481 , G01S7/4876 , G01S17/93 , G01S17/936 , G02B5/26 , G02B5/28 , H01L31/0232 , H04N7/18
Abstract: Heat-blocking filter is a heat-blocking filter to be installed in a window glass of a vehicle. The heat-blocking filter substantially transmits visible light and infrared light in a first wavelength range, and substantially blocks infrared light outside the first wavelength range.
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公开(公告)号：US20180299553A1
公开(公告)日：2018-10-18
申请号：US16012860
申请日：2018-06-20
Inventor： Masato TAKEMOTO , Shinzo KOYAMA , Motonori ISHII , Shigeru SAITOU
Abstract: A distance measurement device includes: a pulse light emitter that emits pulse light to a measurement target; an optical sensor that receives reflected light which is the pulse light reflected by the measurement target; and a controller that controls a light emission timing of the pulse light emitted by the pulse light emitter, and determines a distance to the measurement target, from a light reception timing of the reflected light detected by the optical sensor. The controller sets the light emission timing in each of N periods (N being a natural number less than K) selected randomly from continuous K periods (K being a natural number greater than or equal to 2) to a timing that is delayed by a random first time from a start time of the period.
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Patent Agency Ranking
公开(公告)号：US20250124586A1
公开(公告)日：2025-04-17
申请号：US18834919
申请日：2023-03-23
Inventor： Hiromu KITAJIMA , Toru OKINO , Yusuke YUASA , Shigeru SAITOU
Abstract: A parallax information generation device includes: a phase image generation unit that generates a relative phase image from phase shift images based on projection of phase shift pattern light; a code image segmentation processing unit that performs segmentation for each period of the phase shift pattern light on the basis of a sequence generated from a code value given to each pixel of binary pattern images based on projection of binary pattern light; and a parallax information generation unit that generates parallax information on the basis of the relative phase image and results of the segmentation. The binary pattern light is constituted by a sequence in which 2n mutually different code values are allocated by combining n kinds of binary pattern light, and mutually different code values are allocated at each boundary between periods of the phase shift pattern light.
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公开(公告)号：US20240004037A1
公开(公告)日：2024-01-04
申请号：US18466458
申请日：2023-09-13
Inventor： Yuki SUGIURA , Akito INOUE , Shigeru SAITOU , Shinzo KOYAMA
CPC classification number: G01S7/4816 , G01S7/484 , G01S17/10
Abstract: A distance measuring device includes: a light emitting unit; a pixel array including a plurality of pixels arranged in a matrix; and a control unit calculating the distance to a measuring target. Each of the plurality of pixels includes: an avalanche photodiode; a primary accumulation region for temporarily holding a signal charge; and a plurality of memory elements provided in parallel with respect to the primary accumulation region. The control unit performs a plurality of times of light exposure at timings corresponding to different distance sections within one pulse period of outgoing light from the light emitting unit, allows signal charges generated after the respective times of light exposure to be accumulated in the different memory elements, and reads out the signal charges to calculate the distance to the measuring target.
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18.发明公开公开(公告)号：US20230386058A1
公开(公告)日：2023-11-30
申请号：US18448712
申请日：2023-08-11
Inventor： Yusuke YUASA , Shigeru SAITOU , Yugo NOSE , Shota YAMADA , Shinzo KOYAMA , Masayuki SAWADA , Yutaka HIROSE , Akihiro ODAGAWA
CPC classification number: G06T7/55 , G06T7/11 , G06T7/73 , G06T11/00 , G06T2207/20132 , G06T2207/10028
Abstract: In an object information generation system, an imaging unit is configured to capture a plurality of segment images respectively corresponding to a plurality of distance segments dividing a target space. In a signal processor, the object region extraction unit extracts, from a plurality of segment images, an object region that is a pixel region including an image of the object. An object information generation unit determines, for the object region, a window in which calculation-target pixels are cut out, and generates distance information of the object by calculation using information of a plurality of pixels in the window for two or more segment images.
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公开(公告)号：US20230053841A1
公开(公告)日：2023-02-23
申请号：US17982104
申请日：2022-11-07
Inventor： Yusuke YUASA , Shigeru SAITOU , Shinzo KOYAMA , Yutaka HIROSE , Akihiro ODAGAWA
IPC: G01S17/894 , G01S7/4865
Abstract: An object detection system includes a light emitter, an optical sensor, a controller, and a signal processor. The controller controls the light emitter and the optical sensor to cause range segment signals to be outputted from the optical sensor for corresponding range segments. The signal processor includes: a target object information generator that includes a plurality of generators (a first generator through a fifth generator) capable of operating in parallel and generates items of target object information indicating features of target objects for the range segments; and storage that stores the items of target object information. The target object information generator compares a past one of the items of target object information stored in the storage with a feature of a current one of the target objects detected by the optical sensor to generate a corresponding one of the items of target object information.
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公开(公告)号：US20220310674A1
公开(公告)日：2022-09-29
申请号：US17840167
申请日：2022-06-14
Inventor： Kentaro NAKANISHI , Tatsuya KABE , Mitsuyoshi MORI , Shigeru SAITOU
IPC: H01L27/146
Abstract: A semiconductor device includes a semiconductor substrate a pixel region in which an APD is disposed, and a logic region different from the pixel region; a transistor which is disposed in the logic region and includes a sidewall made of an insulating material; an anti-reflective film which is disposed above a main surface of the semiconductor substrate in the pixel region and is made of the insulating material; and a first liner film which is disposed above the main surface of the semiconductor substrate in the logic region and is made of the insulating material. The anti-reflective film and the first liner film are integrally formed. The thickness of the anti-reflective film is larger than or equal to the sum of the thickness of the sidewall and the thickness of the first liner film.
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