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公开(公告)号：KR101495136B1
公开(公告)日：2015-02-25
申请号：KR1020080113839
申请日：2008-11-17
IPC: G06T15/00
CPC classification number: G06T11/006 , G06T2211/424 , G06T2211/436
Abstract: 2차원 영상으로부터 3차원 영상을 재구성하는 방법 및 장치가 제공된다. 제한된 각도에서 엑스선(x-ray) 발생 튜브로부터 재구성되는 3차원 데이터를, 각 화소별로 반복적으로 갱신하고, 복원하기 위해서 투영된 데이터의 각 화소들 중에서 중앙값(median)을 선택하며, 재투영된 영상 및 나머지 영상을 이용한 탐색 방향 가중치를 이용하여 역투영하여, 복원 데이터의 희소성(sparsity) 구속 조건과 L1 놈 충실성(fidelity)이 있는 데이터 조건을 만족하는 3차원 영상을 재구성할 수 있다.
엑스선(x-ray), 영상 재구성(tomosynthesis), L1 놈 충실성(fidelity) 데이터, 데이터의 희소성(sparsity)-
72.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：KR1020130008739A
公开(公告)日：2013-01-23
申请号：KR1020110069269
申请日：2011-07-13
Applicant: 한국과학기술원
Abstract: PURPOSE: A compressive DOT(Diffuse Optical Tomography) method and an apparatus thereof are provided to quickly and accurately restore images by restoring the images using joint scarcity. CONSTITUTION: A DOT problem is converted to MMV(Multiple Measurement Vector) by using joint scarcity(S210). An active index set is calculated by using an MMV algorithm(S220). The amount of changed absorption coefficient is calculated by using a least square fitting algorithm(S230). [Reference numerals] (AA) Start; (BB) End; (S210) Converting a DOT problem to an MMV problem by using joint scarcity; (S220) Calculating an active index set by using MMV algorithm; (S230) Calculating the change amount of an absorption coefficient by using least square fitting algorithm
Abstract translation: 目的：提供压缩DOT（漫射光学层析成像）方法及其装置，以通过使用联合稀缺恢复图像来快速和准确地恢复图像。 构成：DOT问题通过使用联合稀缺（S210）转换为MMV（多重测量向量）。 通过使用MMV算法计算活动索引集（S220）。 通过使用最小二乘拟合算法计算改变的吸收系数的量（S230）。 （附图标记）（AA）开始; （BB）结束; （S210）通过使用联合稀缺将DOT问题转换为MMV问题; （S220）使用MMV算法计算有效索引集; （S230）使用最小二乘拟合算法计算吸收系数的变化量
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Patent Agency Ranking
公开(公告)号：KR1020120114933A
公开(公告)日：2012-10-17
申请号：KR1020110032783
申请日：2011-04-08
Applicant: 한국과학기술원
CPC classification number: G01N21/6458
Abstract: PURPOSE: An ultra resolution microscope system and an image obtaining method using the same are provided to obtain an image in ultra resolution of a nanometer degree by using an irregular pattern and an alignment signal processing technique. CONSTITUTION: A scattering pattern generator(110) passes transmitted light through a scattering unit to photograph fluorescent light sources of an object. An incident optical system(120) inserts a scattering pattern generated by one or more optical lenses into a specimen. A fluorescent optical image system(130) passes the inserted scattering pattern through one or more excitation filters and fluorescent filters in order. [Reference numerals] (110) Scattering pattern generator; (120) Incident optical system; (130) Fluorescent optical image system; (140) Image restoration algorithm
Abstract translation: 目的：提供一种超分辨率显微镜系统和使用其的图像获取方法，以通过使用不规则图案和对准信号处理技术来获得超分辨率的纳米级的图像。 构成：散射图案发生器（110）将透射光通过散射单元以照射物体的荧光光源。 入射光学系统（120）将由一个或多个光学透镜产生的散射图案插入到样本中。 荧光光学图像系统（130）依次将经插入的散射图案通过一个或多个激发滤光片和荧光滤光片。 （附图标记）（110）散射图案发生器; （120）入射光学系统; （130）荧光光学图像系统; （140）图像恢复算法
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公开(公告)号：KR1020110057928A
公开(公告)日：2011-06-01
申请号：KR1020090114557
申请日：2009-11-25
Applicant: 한국과학기술원
IPC: G01J3/02
Abstract: PURPOSE: A tera-hertz time domain spectral device and an image processing method are provided to obtain higher resolution of image with a smaller number of samples by employing compression sensing theory instead of radon transform. CONSTITUTION: A tera-hertz time domain spectral device(100) comprises an optical system and an adjustment system. The optical system employs tera-hertz beam as light source and forms a two-dimensional image using time domain. The adjustment system forms a mask(4) transforming Fourier domain on the optical system. The optical system restores the original two-dimensional object from one-dimension time data which is obtained by rotating the mask.
Abstract translation: 目的：提供一个时频域频谱设备和图像处理方法，通过采用压缩感应理论而不是氡气变换来获得具有较小数量样本的图像的较高分辨率。 构成：泰勒赫兹时域光谱装置（100）包括光学系统和调节系统。 光学系统采用紫外光束作为光源，并使用时域形成二维图像。 调整系统在光学系统上形成傅立叶域的掩模（4）。 光学系统通过旋转掩模获得的一维时间数据来恢复原始的二维物体。
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公开(公告)号：KR1020100123322A
公开(公告)日：2010-11-24
申请号：KR1020090042488
申请日：2009-05-15
Applicant: 한국과학기술원
IPC: H04N13/00
CPC classification number: G01J3/2823 , G01N21/3586 , H03B2200/0084 , H04N13/106
Abstract: PURPOSE: An image reconstruction system in a three dimensional space using terahertz pulse-echo and a method thereof are provided to restore a location of an object in a three dimensional space using a pulse wave of terahertz, thereby obtaining an image with improved resolution. CONSTITUTION: An optical system irradiates a pulse wave of a terahertz area to a three dimensional space. The optical system receives a reflecting wave reflected by a diffused object of a three dimensional space. An image restoring unit(130) applies a compression sensing algorithm to restore a location of the diffused object from the received reflected wave. The optical system is composed of a photo-electron antenna(110). A pulse generating unit(111) generates a pulse wave. A pulse receiving unit(113) receives the reflected wave.
Abstract translation: 目的：提供使用太赫兹脉冲回波的三维空间中的图像重建系统及其方法，以使用太赫兹脉冲波在三维空间中恢复对象的位置，从而获得具有改进的分辨率的图像。 构成：光学系统将太赫兹区域的脉冲波照射到三维空间。 光学系统接收由三维空间的漫射物体反射的反射波。 图像恢复单元（130）应用压缩感测算法来从接收到的反射波恢复扩散对象的位置。 光学系统由光电子天线（110）组成。 脉冲发生单元（111）产生脉冲波。 脉冲接收单元（113）接收反射波。
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公开(公告)号：KR1020100054973A
公开(公告)日：2010-05-26
申请号：KR1020080113839
申请日：2008-11-17
IPC: G06T15/00
CPC classification number: G06T11/006 , G06T2211/424 , G06T2211/436
Abstract: PURPOSE: A method and an apparatus for regenerating a three-dimensional image from a two-dimensional image are provided to improve a noise removal effect compared with a linear filtering method by processing images through a non-linear filtering method according to a median value. CONSTITUTION: A recovery image generator(310) creates a three-dimensional recovery image through reverse projection using a pixel value corresponding to a median value among pixel values of images. The images are created by the two-dimensional projection of a target to be three-dimensionally recovered. A re-projection image generator(320) creates a two-dimensional re-projected image through the re-projection of the three-dimensional recovered image. A residual image forming part(330) constitutes a residual image according to the difference between the projected image and the two-dimensional re-projected image.
Abstract translation: 目的：提供一种用于从二维图像再生三维图像的方法和装置，以通过根据中值的非线性滤波方法处理图像而与线性滤波方法相比提高噪声去除效果。 构成：恢复图像生成器（310）通过使用与图像的像素值之间的中值对应的像素值的反投影来创建三维恢复图像。 图像通过三维恢复的目标的二维投影来创建。 再投影图像生成器（320）通过三维恢复图像的重新投影产生二维再投影图像。 残留图像形成部（330）根据投影图像与二维再投影图像之间的差构成残差图像。
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公开(公告)号：KR100816020B1
公开(公告)日：2008-03-21
申请号：KR1020070007568
申请日：2007-01-24
Applicant: 한국과학기술원
CPC classification number: G01R33/5608 , G01R33/4824 , G01R33/561
Abstract: A method for restoring an image is provided to achieve the restoration to a high-resolution image, by applying an FOCUSS(Focal Underdetermined System Solver) algorithm to a low-resolution image frequency data, which are converted from down-sampled data. Down-sampled data are outputted with respect to an image having a dynamic change(S10). The down-sampled data are converted into low-resolution image frequency data(S20). The converted low-resolution image frequency data are converted into a high-resolution image by applying an FOCUSS algorithm in a k-t space(S30). The down-sampled data are converted into the low-resolution image frequency data by using second-dimensional Fourier transformation.
Abstract translation: 提供一种用于恢复图像的方法，通过将FOCUSS（焦点不足确定的系统求解器）算法应用于从下采样数据转换的低分辨率图像频率数据来实现对高分辨率图像的恢复。 相对于具有动态变化的图像输出下采样数据（S10）。 下采样数据被转换成低分辨率图像频率数据（S20）。 通过在k-t空间中应用FOCUSS算法将转换的低分辨率图像频率数据转换成高分辨率图像（S30）。 下采样数据通过使用第二维傅立叶变换被转换成低分辨率图像频率数据。
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