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公开(公告)号：US10697821B2
公开(公告)日：2020-06-30
申请号：US15886891
申请日：2018-02-02
Inventor： Taro Imagawa , Akihiro Noda , Hiroya Kusaka
Abstract: A calibration device is a calibration device configured to calibrate a load meter that measures an axle load of a vehicle. The calibration device includes a detector and a calibrator. The detector detects a displacement amount corresponding to displacement caused on a road by the axle load of the vehicle. The calibrator aggregates the displacement amounts detected by the detector to generate a histogram of the displacement amounts, and updates a displacement coefficient for calculating the axle load of the vehicle based on a shape of the histogram. The calibrator updates the displacement coefficient base only on the shape of the histogram corresponding to a first axle serving as a forefront axle of the vehicle.
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公开(公告)号：US09958388B2
公开(公告)日：2018-05-01
申请号：US15810804
申请日：2017-11-13
Inventor： Taro Imagawa
IPC: G01N21/64
CPC classification number: G01N21/64 , G01B11/026 , G01N21/6408 , G01N21/6456 , G01N2201/061 , G01S17/00
Abstract: A lighting unit illuminates an object with at least one type of excitation light and illumination light. An imaging unit captures images with at least one type of fluorescent light generated by the object illuminated with the excitation light, and with reflected light caused when the object reflects the illumination light. A fluorescent light detector generates a delay time distribution image of fluorescent light from a fluorescent light image captured by the imaging unit. A distance measuring unit generates a range image from a reflected light image captured by the imaging unit.
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公开(公告)号：US12283069B2
公开(公告)日：2025-04-22
申请号：US17704290
申请日：2022-03-25
Inventor： Taro Imagawa , Akihiro Noda , Yuki Maruyama , Hiroya Kusaka
Abstract: A conversion parameter calculation method includes: obtaining, from a first image capturing device, first image data obtained by the first image capturing device capturing an image of an object; obtaining, from a second image capturing device, second distance data indicating a distance to the object, and second image data obtained by the second image capturing device capturing an image of the object; obtaining displacement direction information indicating a direction of a displacement of the object in three dimensions; associating positions on the object in the first image data and the second image data; estimating a position of the first image capturing device; calculating first distance data indicating a distance from the first image capturing device to the object; and calculating a conversion parameter for converting a pixel displacement amount of the object into the actual displacement amount, using the first distance data and the displacement direction information.
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公开(公告)号：US11920913B2
公开(公告)日：2024-03-05
申请号：US17699418
申请日：2022-03-21
Inventor： Akihiro Noda , Taro Imagawa , Yuki Maruyama , Hiroya Kusaka
CPC classification number: G01B11/022 , G01B11/026 , G01B11/03 , G01B11/2518 , G06K7/1417
Abstract: A conversion parameter calculation method includes: obtaining, from an image capturing device, image data obtained by the image capturing device capturing an image of an object having attached thereto a marker with which specific coordinates are detectable; obtaining displacement direction information indicating a direction of a displacement of the object, the direction crossing an image capturing surface of the image capturing device; detecting specific coordinates, based on the marker included in the image data; estimating a position of the image capturing device, based on a result of the detection; calculating distance data indicating a distance from the image capturing device to the object, based on the position of the image capturing device; and calculating, using the distance data and the displacement direction information, a conversion parameter for converting a pixel displacement amount of the object into an actual displacement amount.
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公开(公告)号：US11199469B2
公开(公告)日：2021-12-14
申请号：US16357928
申请日：2019-03-19
Inventor： Hiroya Kusaka , Taro Imagawa , Akihiro Noda
Abstract: A monitoring system includes an axle weight measurer and a state estimator. The axle weight measurer detects a surface displacement of a road from a first captured image obtained by imaging the road when a vehicle passes at a predetermined spot of a structure having the road that the vehicle passes, and calculates an axle weight of the vehicle from the surface displacement and a displacement coefficient of the road. The state estimator generates an axle weight distribution from the axle weight calculated by the axle weight measurer, and estimates a deterioration degree of the structure, using the axle weight distribution.
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Patent Agency Ranking
公开(公告)号：US10379035B2
公开(公告)日：2019-08-13
申请号：US15901506
申请日：2018-02-21
Inventor： Akihiro Noda , Hiroya Kusaka , Taro Imagawa , Shunsuke Yasugi
IPC: H04N7/18 , G01N21/27 , G06T7/90 , G01N21/84 , G06T7/00 , H04N5/235 , G01N21/25 , G01N21/47 , H04N5/225 , H04N5/232 , H04N9/04 , H04N9/64 , G06T7/13 , G01N33/02
Abstract: An appearance inspection apparatus includes a lighting unit, an imaging unit, a memory, an operating unit, a detecting unit, and a determination unit. The lighting unit has a plurality of light sources emitting single-wavelength light with relative spectral distributions different from one another, and substantially simultaneously irradiates a photographic subject with illumination light. The imaging unit captures light discharged by the photographic subject. The memory stores information about sensitivity characteristics of the imaging unit for each color. The operating unit separates an image into a first, a second, and a third image, for each component of the single-wavelength light, using the information. The detecting detects information about a specific area of the photographic subject using the first and the second image. The determination unit extracts an amount of image characteristics corresponding to a characteristic part present in the specific area using the first and the third image.
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公开(公告)号：US10091404B2
公开(公告)日：2018-10-02
申请号：US15351765
申请日：2016-11-15
Inventor： Taro Imagawa
Abstract: The illumination apparatus according to the present disclosure emits illumination light to an object which is to be captured by an imaging apparatus that captures an imaging area for every predetermined capturing unit. The illumination apparatus includes a controller that acquires imaging information including a scanning timing from the imaging apparatus to calculate an imaging range of the imaging apparatus at each the scanning timing, determines an illumination range at each the scanning timing using a distance to the imaging apparatus from the object present within the imaging range and a positional relation between the imaging apparatus and the illumination apparatus, and controls emission of the illumination light to the determined illumination range in synchronization with the scanning timing.
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公开(公告)号：US09047665B2
公开(公告)日：2015-06-02
申请号：US14198758
申请日：2014-03-06
Inventor： Hiroaki Omayu , Taro Imagawa , Toshiyuki Nakashima , Takeshi Hamasaki , Hiroyuki Miyahara
CPC classification number: G06T5/002 , G06T2207/10024 , H04N1/58 , H04N1/6005 , H04N5/217 , H04N9/045
Abstract: An image processing apparatus comprises: a separation unit configured to separate image data into a luminance signal and a color difference signal; a decision unit configured to decide a reference pixel, which is referenced for a pixel of interest included in the image data; a luminance noise reduction unit configured to reduce luminance noise in the luminance signal of the image data; a weight calculation unit configured to calculate a weight of the reference pixel based on similarity of luminance included in the luminance signal having been subjected to noise reduction by the luminance noise reduction unit between a first area containing the pixel of interest and a second area containing the reference pixel; and a color noise reduction unit configured to reduce color noise in the color difference signal for the pixel of interest by using the weight of the reference pixel.
Abstract translation: 一种图像处理装置，包括：分离单元，被配置为将图像数据分离成亮度信号和色差信号; 判定单元，被配置为确定参考像素，所述参考像素被引用于所述图像数据中包含的关注像素; 亮度噪声降低单元，被配置为降低图像数据的亮度信号中的亮度噪声; 权重计算单元，被配置为基于在包含感兴趣像素的第一区域和包含感兴趣像素的第二区域之间的亮度噪声降低单元在已经经过降噪的亮度信号中包括的亮度的相似度来计算参考像素的权重 参考像素 以及颜色噪声降低单元，被配置为通过使用参考像素的权重来减少所述感兴趣像素的色差信号中的颜色噪声。
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公开(公告)号：US20240230945A1
公开(公告)日：2024-07-11
申请号：US18618281
申请日：2024-03-27
Inventor： Taro Imagawa , Akihiro Noda
Abstract: A determination device includes: a distinctive region detector that detects a first distinctive region from first images that include a person and captured at mutually different time points; a reference position calculator that calculates a reference position from second images that include the person and captured at substantially the same time as the first images; a mapper that, when the first distinctive region is detected from one or more first images, maps, for each of the one or more first images, the detected first distinctive region onto the person included in a second image captured at substantially the same time as the first image, based on the first distinctive region and the reference position calculated from the second image; and a determiner that determines a possession of the person based on a mapping result. Each first image is a sub-terahertz wave image.
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20.发明授权公开(公告)号：US11913889B2
公开(公告)日：2024-02-27
申请号：US17136681
申请日：2020-12-29
Inventor： Yuki Maruyama , Hiroya Kusaka , Taro Imagawa , Akihiro Noda
CPC classification number: G01N21/8851 , G01B11/16 , G06T7/001 , G06T7/0004 , G01M5/0033 , G01N2021/8861 , G01N2021/8867 , G01N2203/0066
Abstract: A prediction device for predicting the growth direction of a crack that occurs in a subject includes: an obtainer that obtains video of the subject; a derivation unit that derives displacement of each of a plurality of regions in the obtained video; a selector that selects, from among the plurality of regions, two or more regions each having displacement similar to displacement of a reference region included in the plurality of regions; and an identification unit that identifies, as the growth direction, the longitudinal direction of a collective region made up of the two or more selected regions.
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