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公开(公告)号：US20230196921A1
公开(公告)日：2023-06-22
申请号：US18110462
申请日：2023-02-16
Inventor： Ayako MARUYAMA , Kunio NOBORI , Takeo AZUMA , Satoshi SATO , Nobuhiko WAKAI
CPC classification number: G08G1/166 , H04N7/181 , G06T5/005 , B60R1/003 , G01S13/931 , G06T7/70 , G08G1/165 , G06T11/00 , G06T2207/30252 , B60R2300/105 , B60R2300/303
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 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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公开(公告)号：US20210142500A1
公开(公告)日：2021-05-13
申请号：US17152231
申请日：2021-01-19
Inventor： Takeo AZUMA , Satoshi SATO , Nobuhiko WAKAI , Kohsuke YOSHIOKA , Noritaka SHIMIZU , Yoshinao KAWAI , Takaaki AMADA , Yoko KAWAI , Takeshi MURAI , Hiroki TAKEUCHI
Abstract: A depth acquisition device includes a memory and a processor performing: acquiring, from the memory, intensities of infrared light measured by imaging with infrared light emitted from a light source and reflected on a subject by pixels in an imaging element; generating a depth image by calculating the distance for each pixel based on the intensities; acquiring, from the memory, a visible light image generated by imaging, with visible light, the substantially same scene from the substantially same viewpoint at the substantially same timing as those of the infrared light image; detecting a lower reflection region showing an object having a lower reflectivity from the infrared light image in accordance with the infrared light image and the visible light image; correcting a corresponding lower reflection region in the depth image in accordance with the visible light image; and outputting the depth image with the corrected lower reflection region.
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公开(公告)号：US20210142496A1
公开(公告)日：2021-05-13
申请号：US17157175
申请日：2021-01-25
Inventor： Satoshi SATO , Takeo AZUMA , Nobuhiko WAKAI , Kohsuke YOSHIOKA , Noritaka SHIMIZU , Yoshinao KAWAI , Takaaki AMADA , Yoko KAWAI , Takeshi MURAI , Hiroki TAKEUCHI
IPC: G06T7/521
Abstract: A depth acquisition device includes a memory and a processor. The processor performs; acquiring timing information indicating a timing at which a light source irradiates a subject with infrared light; acquiring an infrared light image stored in the memory, the infrared light image being generated by imaging a scene including the subject with the infrared light according to the timing indicated by the timing information; acquiring a visible light image stored in the memory, the visible light image being generated by imaging a substantially same scene as that of the infrared light image, with visible light from a substantially same viewpoint and at a substantially same imaging time of those of the infrared light image; detecting a dust region showing dust from the infrared light image; and estimating a depth of the dust region based on the infrared light image, the visible light image, and the dust region.
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14.发明申请公开(公告)号：US20190325610A1
公开(公告)日：2019-10-24
申请号：US16458489
申请日：2019-07-01
Inventor： Nobuhiko WAKAI , Takeo AZUMA , Kunio NOBORI , Satoshi SATO , Ayako MARUYAMA
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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公开(公告)号：US20190020814A1
公开(公告)日：2019-01-17
申请号：US16136741
申请日：2018-09-20
Inventor： Satoshi SATO , Takeo AZUMA , Hiroyuki MOTOYAMA , Jun OZAWA
CPC classification number: H04N5/23229 , G09G2340/02 , G09G2370/18 , H04N5/232 , H04N5/347 , H04N5/357 , H04N5/374 , H04N5/378
Abstract: In an imaging device, a difference calculation unit calculates a differential signal between charge signals that have been accumulated and are held by first and charge holding units with different timings. A multiple sampling unit performs multiple sampling processing on the differential signal, and an analog digital conversion unit converts a signal that has undergone multiple sampling processing to a digital signal. That is, multiple sampling processing is performed on a differential signal with a higher sparsity than that of an image signal.
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Patent Agency Ranking
16.发明申请公开(公告)号：US20160381369A1
公开(公告)日：2016-12-29
申请号：US15258440
申请日：2016-09-07
Inventor： Satoshi SATO , Takeo AZUMA , Jun OZAWA
IPC: H04N19/192 , H04N19/172 , H04N19/136
CPC classification number: H04N19/192 , H04N19/12 , H04N19/136 , H04N19/172 , H04N19/60
Abstract: An image capturing system includes a photoelectric conversion unit, a charge holding unit, a multiple sampling information setting unit, a multiple sampling unit, a conversion unit, and an image reconstruction unit. The photoelectric conversion unit converts optical signals received by a plurality of pixels to electric signals. The charge holding unit stores the electric signals and holds the electric signals as charge signals. The multiple sampling information setting unit sets multiple sampling information used for a multiple sampling process. The multiple sampling information includes first multiple sampling information and second multiple sampling information. The multiple sampling unit performs the multiple sampling process using the multiple sampling information and the charge signals so as to output signals. The conversion unit converts the output signals to digital signals. The image reconstruction unit generates reconstructed images using the digital signals and the multiple sampling information, and outputs the reconstructed images.
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公开(公告)号：US20210398430A1
公开(公告)日：2021-12-23
申请号：US17462310
申请日：2021-08-31
Inventor： Ayako MARUYAMA , Kunio NOBORI , Takeo AZUMA , Satoshi SATO , Nobuhiko WAKAI
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 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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公开(公告)号：US20210064873A1
公开(公告)日：2021-03-04
申请号：US17064794
申请日：2020-10-07
Inventor： Kunio NOBORI , Satoshi SATO , Takeo AZUMA
Abstract: There is provided an image capturing apparatus that captures a plurality of images, calculates a three-dimensional position from the plurality of images, and outputs the plurality of images and information about the three-dimensional position. The image capturing apparatus includes an image capturing unit, a camera parameter storage unit, a position calculation unit, a position selection unit, and an image complementing unit. The image capturing unit outputs the plurality of images using at least three cameras. The camera parameter storage unit stores in advance camera parameters including occlusion information. The position calculation unit calculates three dimensional positions of a plurality of points. The position selection unit selects a piece of position information relating to a subject area that does not have an occlusion, and outputs selected position information. The image complementing unit generates a complementary image, and outputs the complementary image and the selected position information.
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19.发明申请公开(公告)号：US20200177867A1
公开(公告)日：2020-06-04
申请号：US16782239
申请日：2020-02-05
Inventor： Kunio NOBORI , Nobuhiko WAKAI , Takeo AZUMA , Satoshi SATO , Ayako MARUYAMA , Mikiya NAKATA
IPC: H04N13/246 , H04N13/243
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：US20190213746A1
公开(公告)日：2019-07-11
申请号：US16235149
申请日：2018-12-28
Inventor： Takeo AZUMA , Kunio NOBORI , Satoshi SATO , Nobuhiko WAKAI
Abstract: A disparity estimation device calculates, for each of first pixels of a first image and each of second pixels of a second image, a first census feature amount and a second census feature amount, calculates, for each of the first pixels, a first disparity value of the first pixel with integer accuracy, extracts, for each of the first pixels, reference pixels located in positions corresponding to the first disparity value and a near disparity value close to the first disparity value from the second pixels, calculates sub-pixel evaluation values based on the relationship between the pixel values of the first pixel and the neighboring pixel and the pixel values of each of the reference pixels and the neighboring pixel, and estimates a second disparity value of the first pixel with sub-pixel accuracy by equiangular fitting.
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