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公开(公告)号：US10321887B2
公开(公告)日：2019-06-18
申请号：US16040766
申请日：2018-07-20
Applicant: FUJIFILM Corporation
Inventor： Takashi Tajima , Jun Enomoto , Yasufumi Oda , Takeshi Kuwabara , Daiki Harada , Yuichi Hosoi , Haruyasu Nakatsugawa
IPC: A61B6/00
Abstract: In an image analysis device, an image analysis method, and a non-transitory computer-readable recording medium, it is determined whether a radiographic image is captured by rocking a rocking imaging grid. The image analysis device includes: a radiographic image acquisition section; a dosage data acquisition section that acquires dosage data indicating, in a time-series manner, a dosage of radiation rays exposed to a specific position in an imaging area in a specific period; and a determining section that determines whether the dosage data has a first feature indicating a dosage variation as a plurality of radiation absorbing bodies and a radiation transmitting body disposed between adjacent radiation absorbing bodies pass through a space between the specific position and a radiation source, and determines that the radiographic image corresponding to the dosage data determined to have the first feature is a rocking grid use image captured by rocking a rocking imaging grid.
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公开(公告)号：US10154825B2
公开(公告)日：2018-12-18
申请号：US15050470
申请日：2016-02-23
Applicant: FUJIFILM CORPORATION
Inventor： Jun Enomoto , Takashi Tajima , Yasufumi Oda , Takeshi Kuwabara , Daiki Harada , Yuichi Hosoi , Haruyasu Nakatsugawa
IPC: G01N5/00 , G01N23/201 , A61B6/00 , A61B6/06
Abstract: The present disclosure provides an image processing device including: a scattered radiation correction data acquisition section that acquires scattered radiation correction data as a result of radiation being irradiated onto a radiographic imaging device that images a radiographic image; a pixel region acquisition section that acquires information indicating a size of an effective pixel region of the radiographic imaging device; an exposure range acquisition section that acquires information indicating an imaging exposure range of radiation for imaging an imaging subject with the radiographic imaging device; an image data acquisition section that acquires image data as a result of imaging a radiographic image of the imaging subject; and a correction section that corrects the image data acquired by the image data acquisition section using the scattered radiation correction data, in a case in which the imaging exposure range includes an area outside of the effective pixel region.
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3.发明授权Radiographic imaging device, radiographic imaging system, method of controlling radiation detection sensitivity and program storage medium 有权射线照相成像装置，放射成像系统，控制辐射检测灵敏度的方法和程序存储介质公开(公告)号：US09335422B2
公开(公告)日：2016-05-10
申请号：US13943270
申请日：2013-07-16
Applicant: FUJIFILM CORPORATION
Inventor： Yasufumi Oda
CPC classification number: G01T1/17 , A61B6/548 , G01T1/2018 , H04N5/23241 , H04N5/32
Abstract: A radiographic imaging device including: a detector that detects an irradiation start of radiation irradiated in imaging of a radiographic image; a derivation unit that derives an irradiation amount of radiation that will be irradiated within a specific period of time based on input data; a controller that makes a power supply amount to the detector smaller and lowers detection sensitivity to radiation irradiation start in the detector the larger the radiation irradiation amount derived by the derivation unit; and an imaging unit that images the radiographic image after radiation irradiation start has been detected by the detector.
Abstract translation: 一种放射线照相成像装置，包括：检测器，其检测在放射线图像的成像中照射的辐射的照射开始; 导出单元，其基于输入数据导出将在特定时间段内照射的辐射的照射量; 使检测器的电力供给量变小的控制器，降低检测器中的放射线照射开始的检测灵敏度，由导出部导出的放射线照射量越大; 并且通过检测器检测到在辐射照射开始之后对放射线照相图像进行成像的成像单元。
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4.发明授权Radiation image detecting device and operating method thereof, and radiation imaging system 有权辐射图像检测装置及其操作方法以及放射成像系统公开(公告)号：US08866101B1
公开(公告)日：2014-10-21
申请号：US14229128
申请日：2014-03-28
Applicant: FUJIFILM Corporation
Inventor： Keita Watanabe , Kentaro Noma , Yasufumi Oda
IPC: G01J1/42 , H01L27/146 , G01N23/04 , G01T1/16 , H04N5/365
CPC classification number: G01T1/16 , G01N23/04 , G01N2223/505 , H04N5/32 , H04N5/347 , H04N5/3655 , H04N5/3658 , H04N5/367
Abstract: Binning readout reads out electric charge accumulated in pixels to signal lines in blocks of a plurality of adjoining pixel-rows. A correction image generator of a line defect corrector scales up an image size of a reference frame image RP outputted by the binning readout and corrects pixel values of the reference frame image RP, to produce a correction image RPC to be used for correction of a line defect occurring in an X-ray image XP. The scale-up is performed by applying row interpolation processing to the reference frame image RP. The correction of the pixel values is performed by multiplying the reference frame image RP after being subjected to the row interpolation processing by a correction coefficient. An adder adds the correction image RPC to the X-ray image XP, and produces an X-ray image XPC in which the line defect is corrected.
Abstract translation: 分箱读出将多个相邻像素行中的块中的以像素累积的电荷读出为信号线。 线缺陷校正器的校正图像生成器对通过合并读出输出的参考帧图像RP的图像尺寸进行放大，并校正参考帧图像RP的像素值，以产生用于校正线的校正图像RPC 在X射线图像XP中出现缺陷。 通过对参考帧图像RP应用行内插处理来执行放大。 像素值的校正是通过将进行行内插处理后的基准帧图像RP乘以校正系数来进行的。 加法器将校正图像RPC添加到X射线图像XP，并产生校正线缺陷的X射线图像XPC。
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公开(公告)号：US11723618B2
公开(公告)日：2023-08-15
申请号：US17163595
申请日：2021-02-01
Applicant: FUJIFILM CORPORATION
Inventor： Yasufumi Oda
CPC classification number: A61B6/5258 , A61B6/5264 , G01T1/2018 , H04N5/32 , H04N25/40 , A61B6/5235 , A61B6/5241 , A61B6/542 , A61B6/582
Abstract: The radiographic image detection device performs: a radiographic image generation process of reading a pixel signal from a pixel region in a state in which radiation is emitted to generate a radiographic image; a first correction image acquisition process of reading the pixel signal from the pixel region a plurality of times to acquire a plurality of first correction images in a shorter accumulation time than the radiographic image or using binning reading in a state in which the radiation is not emitted immediately before radiography including the radiographic image generation process; a selection process of selecting, as an averaging target, at least two or more of the plurality of first correction images according to a time elapsed since immediately preceding radiography or an amount of variation in a residual image based on the first correction image; and a correction process of correcting the radiographic image on the basis of an average image obtained by averaging the first correction images selected as the averaging target.
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Patent Agency Ranking
公开(公告)号：US11490869B2
公开(公告)日：2022-11-08
申请号：US17179426
申请日：2021-02-19
Applicant: FUJIFILM CORPORATION
Inventor： Yasufumi Oda
Abstract: A radiographic image detection device subtracts a first offset image from a radiographic image to generate a primary corrected image, subtracts a second offset image from an immediately preceding offset image to generate an offset difference image, performs gain correction on the primary corrected image on the basis of a first gain image to generate a secondary corrected image, performs gain correction on the offset difference image on the basis of a second gain image to generate a gain-corrected offset difference image, performs a low-pass filtering process on the gain-corrected offset difference image, and subtracts the gain-corrected offset difference image subjected to the low-pass filtering process from the secondary corrected image to generate a tertiary corrected image.
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公开(公告)号：US09633480B2
公开(公告)日：2017-04-25
申请号：US14855540
申请日：2015-09-16
Applicant: FUJIFILM Corporation
Inventor： Jun Enomoto , Yasufumi Oda , Takashi Tajima , Takeshi Kuwabara , Daiki Harada , Yuichi Hosoi , Haruyasu Nakatsugawa
CPC classification number: G06T19/006 , A61B6/5211 , A61B6/5282 , G06T7/62 , G06T11/008 , G06T11/60 , G06T2207/10116 , G06T2207/30061
Abstract: An image obtaining unit obtains a subject image, a body thickness distribution modifying unit receives input of a virtual model having an estimated body thickness distribution and modifies the estimated body thickness distribution of the virtual model to output the modified estimated body thickness distribution, and a body thickness distribution determining unit determines the outputted estimated body thickness distribution to be used as the body thickness distribution of the subject. The body thickness distribution determining unit includes a judging unit for switching, according to a judgment condition, between a first control under which the body thickness distribution modifying process is iteratively executed until a first termination condition is satisfied and a second control under which the body thickness distribution modifying process is iteratively executed until a second termination condition that is different from the first termination condition is satisfied so that the first control or the second control is executed.
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8.发明授权公开(公告)号：US09063239B2
公开(公告)日：2015-06-23
申请号：US13711514
申请日：2012-12-11
Applicant: FUJIFILM Corporation
Inventor： Yasufumi Oda
Abstract: A radiographic image capture device includes a radiation detector and a determination section. The radiation detector includes a first sensor for radiographic image capture and a second sensor for radiation detection. The determination section determines whether or not radiation has been detected by the radiation detector based on a ratio of a first value obtained by the first sensor to a second value obtained by the second sensor.
Abstract translation: 放射线照相图像捕获装置包括放射线检测器和确定部。 辐射检测器包括用于放射线图像捕获的第一传感器和用于辐射检测的第二传感器。 确定部分基于由第一传感器获得的第一值与由第二传感器获得的第二值的比率确定辐射检测器是否已经检测到辐射。
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公开(公告)号：US11490870B2
公开(公告)日：2022-11-08
申请号：US17179427
申请日：2021-02-19
Applicant: FUJIFILM CORPORATION
Inventor： Yasufumi Oda
Abstract: A correction image acquisition process includes: a first gain image acquisition process of reading a pixel signal from a pixel region irradiated with radiation in a state in which a subject is not placed to acquire a first gain image; a pre-irradiation image acquisition process of reading the pixel signal from the pixel region in a state in which the subject is not placed and the radiation is not emitted to acquire a pre-irradiation image; a discarding process of discarding charge accumulated in a pixel of the pixel region after a dose of radiation that saturates the charge is emitted in a state in which the subject is not placed; a post-irradiation image acquisition process of reading the pixel signal from the pixel region to acquire a post-irradiation image after the discarding process is performed; and a second gain image acquisition process of subtracting the pre-irradiation image from the post-irradiation image to acquire a second gain image.
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公开(公告)号：US09980696B2
公开(公告)日：2018-05-29
申请号：US15016348
申请日：2016-02-05
Applicant: FUJIFILM Corporation
Inventor： Yasufumi Oda , Jun Enomoto , Ryou Imamura , Takashi Tajima , Kentaro Noma , Takeshi Kuwabara , Tetsuya Tsuji , Hiroaki Yasuda , Haruyasu Nakatsugawa , Takeshi Koishi
CPC classification number: A61B6/54 , A61B6/465 , A61B6/467 , A61B6/5211 , A61B6/542
Abstract: Disclosed is a technique capable of enhancing usability of a radiographic image capturing apparatus, system, control method of the radiographic image capturing apparatus and a non-transitory computer readable recording medium recorded with a control program, for a user. A radiographic image capturing apparatus includes: an I/F unit and an imaging control unit that function as a communication unit that selectively performs communication with any one of a portable information terminal and a console which are plural control apparatuses that have different image processing capacities with respect to a radiographic image and respectively perform a control relating to capturing of the radiographic image; and an imaging control unit that functions as a selection unit that selects any one of plural imaging modes predetermined with respect to the capturing of the radiographic image according to the image processing capacity of the control apparatus that performs communication with the communication unit.
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