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公开(公告)号：KR101727836B1
公开(公告)日：2017-04-17
申请号：KR1020150183431
申请日：2015-12-22
Applicant: 한국과학기술원
CPC classification number: G06T7/0012 , G06T5/005 , G06T5/10 , G06T7/12 , G06T7/13 , G06T11/008 , G06T2207/10081
Abstract: 영상을복원하는방법및 장치가제공된다. 영상복원방법및 장치는영상내의경계정보를검출하고, 경계정보에기반하여영상내의홀을복원하는재생커널(Reproducing Kernel)을생성하며, 재생커널을이용하여홀의정보를추정하고, 추정된홀의정보에기반하여홀을복원한다.
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2.发明授权
公开(公告)号：KR101056287B1
公开(公告)日：2011-08-11
申请号：KR1020100070609
申请日：2010-07-21
Applicant: 한국과학기술원
CPC classification number: A61B6/5258
Abstract: PURPOSE: A metallic shadow removal method of X ray electronic layer photographing image is provided to use one part of projecting images. CONSTITUTION: A device generates an initial restriction image(S110). The device removes a metal part expressing a metallic inserted object the initial restoring image. The device generates a background image(S120). The device extracts a metal part from a plurality of projecting images. The device generates a metal image about the extracted metallic unit(S130). The device generates an initial restoration image by synthesis of a background image and a metal image(S140).
Abstract translation: 目的：提供X射线电子层摄影图像的金属阴影去除方法，以使用一部分投影图像。 构成：设备产生初始限制图像（S110）。 该装置移除表示金属插入物体的金属部分的初始恢复图像。 设备生成背景图像（S120）。 该装置从多个投影图像提取金属部分。 设备产生关于提取的金属单元的金属图像（S130）。 该装置通过合成背景图像和金属图像来生成初始恢复图像（S140）。
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3.发明授权
公开(公告)号：KR101283266B1
公开(公告)日：2013-07-17
申请号：KR1020120041100
申请日：2012-04-19
Applicant: 한국과학기술원
Abstract: 감마선 산란 사이노그램을 생성하여 영상을 재구성하기 위한 방법 및 장치가 제공된다. 초기의 산란 보정이 되지 않은 재구성 영상에서, 광자의 발생 위치가 결정된다. GPU는 몬테카를로 시뮬레이션을 사용하여 광자의 이동을 연산한다. 광자가 검출기에 도달한 위치를 통해 3차원 측정선이 계산되며, 계산된 측정선은 3차원 사이노그램 형식으로 변환되어 프롬프트 사이노그램 및 감마선 산란 사이노그램에 저장된다. 감마선 산란 사이노그램의 스케일을 조정함으로써 최종적인 감마선 산란 사이노그램이 생성된다.
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公开(公告)号：KR1020140133384A
公开(公告)日：2014-11-19
申请号：KR1020130090625
申请日：2013-07-31
Applicant: 한국과학기술원
Abstract: 영상재구성방법및 장치가제공된다. 복수의사이노그램들에기반하여초기의재구성영상이계산되고, 재구성영상에기반하여패치기반최소랭크정규화영상이생성된다. 패치기반최소랭크정규화영상에기반하여재구성영상이업데이트됨으로써소기의재구성영상이생성된다.
Abstract translation: 提供了一种用于重建图像的方法和装置。 基于多个声像图计算初始重建图像，并且基于重建图像生成基于块的最小秩正则化图像。 通过基于基于补丁的最小秩正则化图像更新重建图像来生成预设重建图像。
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Patent Agency Ranking
公开(公告)号：KR1020130055510A
公开(公告)日：2013-05-28
申请号：KR1020120093467
申请日：2012-08-27
CPC classification number: G01N23/046 , G06T11/006 , G06T2211/416 , G06T2211/424
Abstract: PURPOSE: A method and a device for estimating and recovering scattered X-rays of a digital tomography system are provided to obtain the method and the device of a speed improved more than hundreds of times by using a graphic operating device. CONSTITUTION: A device(100) for estimating and recovering scattered X-rays comprises a receiving unit and a graphic operating device(130). The receiving unit receives X-ray transmission data generated by actually measuring an object through a wire/wireless network. The graphic operation device obtains a reconstituted image, in which the final scattering is corrected, based on the received X-ray transmission data. [Reference numerals] (100) X-ray scattering estimation and recovery device; (110) Receiving unit; (120) Control unit; (130) Graphic operating device; (AA,BB,CC,140) Core
Abstract translation: 目的：提供一种用于估计和恢复数字断层摄影系统的散射X射线的方法和装置，以通过使用图形操作装置来获得改善数百次的速度的方法和装置。 构成：用于估计和恢复散射的X射线的装置（100）包括接收单元和图形操作装置（130）。 接收单元接收通过有线/无线网络实际测量物体而产生的X射线透射数据。 图形操作装置基于所接收的X射线透射数据获得其中最终散射被校正的重构图像。 （附图标记）（100）X射线散射估计和恢复装置; （110）接收单位; （120）控制单元; （130）图形操作装置; （AA，BB，CC，140）核心
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公开(公告)号：KR101082629B1
公开(公告)日：2011-11-10
申请号：KR1020100060839
申请日：2010-06-25
Applicant: 한국과학기술원
Abstract: PURPOSE: A method and an apparatus for reconstructing positron emission tomography image parallely using a GPU(Graphics Processing Unit) is provided to reduce operation time by using an ordered subset expectation maximization method. CONSTITUTION: A sinogram is received for reconstruction(S210). The received sinogram is a gamma-ray emission sinogram. The final sinogram is generated by processing the received sinogram according to mathematical expression(S220). A constant table is generated for generating a reconstruction image(S230). The final three dimensional reconstruction image is generated by applying the ordered subset expectation maximization method(S240).
Abstract translation: 目的：提供一种用于重建平行使用GPU（图形处理单元）的正电子发射断层摄影图像的方法和装置，以通过使用有序子集期望最大化方法来减少操作时间。 构成：接收重建正弦图（S210）。 接收的正弦图是伽马射线发射正弦图。 通过根据数学表达式处理接收的正弦图来生成最后的正弦图（S220）。 生成用于生成重构图像的常数表（S230）。 通过应用有序子集期望最大化方法（S240）生成最终三维重建图像。
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8.发明公开
公开(公告)号：KR1020120127214A
公开(公告)日：2012-11-21
申请号：KR1020120041100
申请日：2012-04-19
Applicant: 한국과학기술원
CPC classification number: G06T11/005 , A61B6/037 , G01T1/161
Abstract: PURPOSE: A method and a device estimating a montecarle simulation gamma-ray scattering with positron emission tomography images using a GPU(Graphics Processing Unit) are provided to reduce calculating time by using a parallel processing and to generates a gamma-ray scattering sonogram by using a hybrid CPU(Central Processing Unit)-GPU structure. CONSTITUTION: An image reconstruction method comprises next steps. A sonogram actually measured and generated by measuring an object is received(210). A montecarle simulation with respect to initial generation positions of the object in which the gamma rays are generated is performed(220). The montecarle simulation is parallelly performed per each initial generation position of photons by using a GPU. Gamma ray scattering sonogram in which the gamma ray scattering is corrected is generated base on the information of the scattered photons generated by the montecarle simulation(230). Images reconstructed by the gamma ray scattering sonogram are generated(240). [Reference numerals] (210) Receiving actually measured sonogram; (220) Performing a monte carlo simulation; (230) Generating a Gamma ray scattering sonogram; (240) Generating reconstructed images; (AA) Start; (BB) Finish
Abstract translation: 目的：提供使用GPU（图形处理单元）使用正电子发射断层摄影图像来估计蒙特勒模拟伽马射线散射的方法和装置，以通过使用并行处理来减少计算时间并且通过使用以下方式产生伽马射线散射超声波图 混合CPU（中央处理单元）-GPU结构。 构成：图像重建方法包括以下步骤。 接收通过测量对象实际测量并生成的超声波图（210）。 执行相对于生成伽马射线的物体的初始生成位置的蒙特勒模拟（220）。 通过使用GPU，每个光子的每个初始位置平行地执行蒙特卡勒模拟。 基于通过蒙特蒙模拟生成的散射光子的信息（230）生成校正伽马射线散射的伽马射线散射超声波图。 生成由伽马射线散射超声波图重建的图像（240）。 （附图标记）（210）接收实际测量的超声波图; （220）执行蒙特卡罗模拟; （230）产生伽马射线散射超声波图; （240）生成重建图像; （AA）开始; （BB）完成
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公开(公告)号：KR1020110124685A
公开(公告)日：2011-11-17
申请号：KR1020100060838
申请日：2010-06-25
Applicant: 한국과학기술원
CPC classification number: G01T1/1644 , A61B6/037 , G01T1/2985
Abstract: PURPOSE: A gamma ray diffusion estimation method in a positron emission tomography image using a GPU(Graphic Processing Unit) and apparatus thereof are provided to reduce a calculation time by performing a single diffusion simulation based on the GPU. CONSTITUTION: A reception unit(810) receives sinogram data. A control unit(820) determines the reduction rate of the sinogram and creates reduction sinogram according to the reduction rate. The control unit magnifies the reduced sinogram to the original size of the sinogram and creates a gamma ray diffusion sinogram. The control unit includes a GPU(830). The GPU creates a gamma ray diffusion value in parallel. The GPU calculates a pixel value about the pixels of the gamma ray diffusion sinogram using interpolation.
Abstract translation: 目的：提供使用GPU（图形处理单元）及其装置的正电子发射断层摄影图像中的伽马射线扩散估计方法，以通过基于GPU执行单个扩散模拟来减少计算时间。 构成：接收单元（810）接收正弦图数据。 控制单元（820）确定正弦图的缩小率，并根据缩小率产生缩小正弦图。 控制单元将缩小的正弦图放大到正弦图的原始尺寸，并产生伽马射线扩散正弦图。 控制单元包括GPU（830）。 GPU并行创建伽马射线扩散值。 GPU使用插值来计算关于伽马射线扩散正弦图像的像素值。
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公开(公告)号：KR101590874B1
公开(公告)日：2016-02-02
申请号：KR1020140011731
申请日：2014-01-29
Abstract: 높은공간적해상도및 높은시간적해상도를가지며, 또한아티팩트가적은의료영상을제공하기위한의료영상재구성방법및 그의료영상장치가제공된다. 의료영상장치가단층촬영영상을재구성(reconstruct)하는방법은대상체를촬영한참조영상및 상기대상체를촬영한재구성대상영상을획득하는단계와재구성대상영상내의단위영역에상응하는적어도하나의참조영역을참조영상내에서결정하는단계및 적어도하나의참조영역에포함된데이터에기초하여, 단위영역내의데이터를업데이트하는단계를포함한다.
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