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Patent Agency Ranking
21.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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22.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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