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公开(公告)号：US20180184052A1
公开(公告)日：2018-06-28
申请号：US15841513
申请日：2017-12-14
Inventor： SATOSHI SATO , TAKEO AZUMA , KUNIO NOBORI , HISASHI WATANABE , TAKAMASA ANDO , NOBUHIKO WAKAI
CPC classification number: H04N9/045 , G02B5/0242 , G02B5/0278 , G02B5/201 , G02F1/133504 , H01L27/14601 , H01L27/14621 , H04N9/083 , H04N9/735
Abstract: An imaging system serving as an image generation device is provided with: a random optical filter array that has a plurality of types of optical filters and a scattering unit; photodiodes that receive light transmitted through the random optical filter array; an AD conversion unit that converts the light received by the photodiodes, into digital data; and a color image generation circuit that generates an image, using the digital data and modulation information of the random optical filter array, in which the scattering unit is located between the plurality of types of optical filters and the photodiodes, and in which the scattering unit includes a material having a first refractive index, and a material having a second refractive index that is different from the first refractive index.
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12.发明申请公开(公告)号：US20180144502A1
公开(公告)日：2018-05-24
申请号：US15803784
申请日：2017-11-05
Inventor： NOBUHIKO WAKAI , TAKEO AZUMA , KUNIO NOBORI , SATOSHI SATO , AYAKO MARUYAMA
CPC classification number: G06T7/80 , G06T7/13 , G06T7/75 , G06T2207/20164 , G06T2207/30208 , G06T2207/30244 , H04N5/23293 , H04N17/002
Abstract: A crossing point detector includes memory and a crossing point detection unit that reads out a square image from a captured image in the memory, and detects a crossing point of two boundary lines in a checker pattern depicted in the square image. The crossing point detection unit decides multiple parameters of a function model treating two-dimensional image coordinates as variables, the parameters optimizing an evaluation value based on a difference between corresponding pixel values represented by the function model and the square image, respectively, and computes the position of a crossing point of two straight lines expressed by the decided multiple parameters to thereby detect the crossing point with subpixel precision. The function model uses a curved surface that is at least first-order differentiable to express pixel values at respective positions in a two-dimensional coordinate system at the boundary between black and white regions.
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13.发明申请公开(公告)号：US20180070074A1
公开(公告)日：2018-03-08
申请号：US15693915
申请日：2017-09-01
Inventor： KUNIO NOBORI , NOBUHIKO WAKAI , TAKEO AZUMA , SATOSHI SATO , AYAKO MARUYAMA , MIKIYA NAKATA
IPC: H04N13/02
CPC classification number: H04N13/246 , H04N13/243 , H04N2013/0081
Abstract: A camera-parameter-set calculation apparatus includes a three-dimensional point group calculator that calculates a plurality of three-dimensional coordinates, based on first and second images respectively captured by first and second cameras and first and second camera parameter sets of the first and second cameras; an evaluation value calculator that determines a plurality of pixel coordinates in the second image, based on the plurality of three-dimensional coordinates and the second camera parameter set, determines a plurality of third pixel coordinates in a third image captured by a third camera, based on the plurality of three-dimensional coordinates and a third camera parameter set of the third camera, and calculates an evaluation value, based on pixel values at the plurality of second and third pixel coordinates in the second and third images; and a camera-parameter-set determiner that determines a fourth camera parameter set for the third camera, based on the evaluation value.
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公开(公告)号：US20150319409A1
公开(公告)日：2015-11-05
申请号：US14693913
申请日：2015-04-23
Inventor： NORIHIRO IMAMURA , TSUGUHIRO KORENAGA , KUNIO NOBORI , TAKEO AZUMA , KAZUFUMI MIZUSAWA
CPC classification number: H04N7/181 , G02B13/001 , G02B27/0006 , G03B17/08 , G03B35/08 , G06T7/593 , G06T2207/30252 , H04N5/2254 , H04N5/247
Abstract: An imaging apparatus in an embodiment includes lens optical systems each including a lens whose surface closest to the target object is shaped to be convex toward the target object, imaging regions which respectively face the lens optical systems and output a photoelectrically converted signal corresponding to an amount of light transmitting the lens optical systems and received by the imaging regions, and a light-transmissive cover which covers an exposed portion of the lens of each of the lens optical systems and a portion between the lens of one of the lens optical systems and the lens of another one of the lens optical systems adjacent to the one of the lens optical systems, the cover having a curved portion which is convex toward the target object. The optical axes of the lens optical systems are parallel to each other.
Abstract translation: 一个实施例中的成像装置包括透镜光学系统，每个透镜光学系统包括最接近目标物体的表面被成形为朝向目标物体凸出的透镜，分别面对透镜光学系统的成像区域并输出对应于光量的光电转换信号 透射透镜光学系统并由成像区域接收的光;以及覆盖透镜光学系统中的每一个的透镜的暴露部分的透光盖和透镜光学系统之一的透镜之间的部分 与透镜光学系统中的一个相邻的另一个透镜光学系统的透镜，该盖具有朝向目标物体凸出的弯曲部分。 透镜光学系统的光轴彼此平行。
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公开(公告)号：US20190279026A1
公开(公告)日：2019-09-12
申请号：US16415002
申请日：2019-05-17
Inventor： SATOSHI SATO , MASAHIKO SAITO , TAKEO AZUMA , KUNIO NOBORI , NOBUHIKO WAKAI
Abstract: An image generation apparatus includes a processing circuit and a memory storing at least one computational image. The at least one computational image is a light-field image, a compressive sensing image, or a coded image. The processing circuit (a1) identifies a position of an object in the at least one computational image using a classification device, (a2) generates, using the at least one computational image, a display image in which an indication for highlighting the position of the object is superimposed, and (a3) outputs the display image.
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Patent Agency Ranking
16.发明申请公开(公告)号：US20180316912A1
公开(公告)日：2018-11-01
申请号：US15961026
申请日：2018-04-24
Inventor： NOBUHIKO WAKAI , TAKEO AZUMA , KUNIO NOBORI , SATOSHI SATO , MIKIYA NAKATA
IPC: H04N17/00 , H04N13/246 , G06T7/80
Abstract: Three-dimensional point group data indicating three-dimensional coordinate sets of three-dimensional points included in a common imaging space of one or more cameras is received, one or more images captured by the one or more cameras are transmitted, the one or more transmitted images are received, initial camera parameters of each cameras are decided based on one or more mounting locations and one or more directions of the cameras, corresponding points in the one or more images are calculated for each of the three-dimensional points, based on the three-dimensional point group data and the initial camera parameters, and one or more camera parameters of the one or more cameras are calculated based on pixel values at the corresponding points in the one or more images.
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17.发明申请公开(公告)号：US20180309978A1
公开(公告)日：2018-10-25
申请号：US15952298
申请日：2018-04-13
Inventor： KUNIO NOBORI , NOBUHIKO WAKAI , SATOSHI SATO , TAKEO AZUMA
IPC: H04N13/246 , H04N17/00 , G06T7/80
CPC classification number: H04N13/246 , G06T7/85 , G06T2207/10012 , G06T2207/10024 , G06T2207/30208 , H04N13/239 , H04N17/002
Abstract: A camera parameter set calculation method includes acquiring a first image from a first camera, a second image from a second camera, first and second camera parameter sets of the first camera and the second camera, calculating three-dimensional coordinate sets on the basis of the first image, the second image, the first camera parameter set, and the second camera parameter set, determining first pixel coordinate pairs obtained by projecting the three-dimensional coordinate sets onto the first image and second pixel coordinate pairs obtained by projecting the three-dimensional coordinate sets onto the second image, calculating an evaluation value on the basis of the pixel values at the first pixel coordinate pairs and the pixel values at the second pixel coordinate pairs, and updating the first camera parameter set and the second camera parameter set on a basis of the evaluation value.
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公开(公告)号：US20180300901A1
公开(公告)日：2018-10-18
申请号：US15950220
申请日：2018-04-11
Inventor： NOBUHIKO WAKAI , TAKEO AZUMA , KUNIO NOBORI , SATOSHI SATO
CPC classification number: G06T7/85 , G06T7/73 , G06T2207/10012 , G06T2207/30204
Abstract: A camera calibration method, which calculates camera parameters of two cameras using calibration points, includes: (a1) acquiring three-dimensional coordinate sets of the calibration points and image coordinate pairs of the calibration points in a camera image of each camera; (a2) acquiring multiple camera parameters of each camera; (a3) for each calibration point, calculating a view angle-corresponding length corresponding to a view angle of the two cameras viewing the calibration point; (a4) for each calibration point, calculating a three-dimensional position of a measurement point corresponding to a three-dimensional position of the calibration point using parallax of the calibration point between the two cameras; (a5) for each calibration point, weighting a difference between the three-dimensional coordinate set of the calibration point and the three-dimensional position of the measurement point corresponding to the calibration point using the view angle-corresponding length corresponding to the calibration point; and (a6) updating the camera parameters based on the weighted difference.
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公开(公告)号：US20170366792A1
公开(公告)日：2017-12-21
申请号：US15612427
申请日：2017-06-02
Inventor： SATOSHI SATO , KUNIO NOBORI , TAKEO AZUMA , AYAKO MARUYAMA , NOBUHIKO WAKAI
IPC: H04N9/77 , H04N19/186 , H04N5/40 , H04N9/64
CPC classification number: H04N19/186 , G06T3/4015 , H04N1/41 , H04N1/64 , H04N9/045
Abstract: An imaging apparatus includes an imaging optical system that forms an optical signal, an imaging device that includes a plurality of pixels and that converts the optical signal formed on the plurality of pixels into an electrical signal, a color filter that is arranged between the imaging optical system and the imaging device and that has a different optical transmittance for each of the plurality of pixels and each of a plurality of wavelength ranges, and a transmission data compression circuit that compresses the electrical signal obtained by the imaging device. The sum of products of an optical transmittance group relating to a plurality of optical transmittances of the color filter for each of the plurality of pixels in the plurality of wavelength ranges and coefficients common to the plurality of pixels is the same between the plurality of pixels.
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公开(公告)号：US20170352275A1
公开(公告)日：2017-12-07
申请号：US15608021
申请日：2017-05-30
Inventor： AYAKO MARUYAMA , KUNIO NOBORI , TAKEO AZUMA , SATOSHI SATO , NOBUHIKO WAKAI
CPC classification number: G08G1/166 , B60R1/003 , B60R2300/105 , B60R2300/303 , G01S13/931 , G06T5/005 , G06T7/70 , G06T11/00 , G06T2207/30252 , G08G1/165 , H04N7/181
Abstract: An image generating apparatus generates an image to be displayed on a display and includes at least one memory and a control circuit. The control circuit acquires a plurality of camera images captured by a plurality of cameras installed in a vehicle, calculates a distance between one of the cameras and a target to be projected in the camera images, detects a position of a light-transmissive object or a reflective object in the camera images, and generates an image from a point of view that is different from points of view of the plurality of camera images by using the plurality of camera images and the distance, the generated image including a predetermined image that is displayed at the position of the light-transmissive object or the reflective object.
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