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    • 1. 发明授权
    • Method of processing a Radon data based image function and imaging method
    • 基于氡数据的图像处理方法及成像方法
    • US08630466B2
    • 2014-01-14
    • US12527188
    • 2008-02-08
    • Christoph HoeschenOleg TischenkoYuan Xu
    • Christoph HoeschenOleg TischenkoYuan Xu
    • G06K9/00
    • G06T11/006
    • An image processing method for providing a digitized image as an approximation of an image function ƒ, wherein the digitized image comprises a plurality of pixels with a predetermined pixel size, comprises the steps of providing the image function ƒ from Radon data comprising a plurality of projection functions measured corresponding to a plurality of predetermined projection directions (v), and determining pixel values from the image function, the pixel values representing the digitized image to be obtained, wherein the pixel values are determined in dependence on at least two image function values within the pixel size of the respective pixel. Furthermore, an imaging method and an imaging device using the image processing method are described.
    • 一种用于提供数字化图像作为图像函数f的近似的图像处理方法,其中所述数字化图像包括具有预定像素大小的多个像素,包括以下步骤:从包含多个投影的氡数据提供图像函数f 根据多个预定投影方向(v)测量的函数,以及根据图像函数确定像素值,表示要获得的数字化图像的像素值,其中根据至少两个图像函数值确定像素值 各像素的像素尺寸。 此外,描述了使用该图像处理方法的成像方法和成像装置。
    • 3. 发明授权
    • Method of reconstructing an image function from Radon data
    • 从氡数据重建图像函数的方法
    • US08094910B2
    • 2012-01-10
    • US12282877
    • 2007-03-14
    • Yuan XuOleg TischenkoChristoph Hoeschen
    • Yuan XuOleg TischenkoChristoph Hoeschen
    • G06K9/00A61B6/00
    • G06T11/005A61B6/027
    • A method of reconstructing an image function on the basis of a plurality of projection profiles corresponding to a plurality of projection directions through a region of investigation, each projection profile including a series of value positions, wherein measured projection values corresponding to projection lines parallel to the respective projection direction are assigned to respective value positions and a plurality of remaining value positions are empty, comprises the steps of (a) assigning first interpolation values to the empty value positions for constructing a plurality of interpolation profiles on the basis of the projection profiles, wherein the first interpolation values are obtained from a first interpolation within a group of measured projection values having the same value position in different projection profiles, and (b) determining the image function by applying a predetermined reconstruction algorithm on the interpolation profiles.
    • 一种基于通过调查区域对应于多个投影方向的多个投影轮廓来重建图像功能的方法,每个投影轮廓包括一系列值位置,其中对应于与所述投影线平行的投影线的测量投影值 相应的投影方向被分配给相应的值位置,并且多个剩余值位置为空,包括以下步骤:(a)基于投影轮廓来分配用于构建多个插值轮廓的空值位置的第一内插值, 其中所述第一内插值是从在不同投影轮廓中具有相同值位置的测量投影值组中的第一内插获得的,以及(b)通过对所述插值曲线应用预定重建算法来确定所述图像功能。
    • 6. 发明授权
    • Method and device for shaping an energy input beam
    • 用于成形能量输入光束的方法和装置
    • US07573975B2
    • 2009-08-11
    • US11794557
    • 2005-12-21
    • Yuan XuOleg TischenkoChristoph Hoeschen
    • Yuan XuOleg TischenkoChristoph Hoeschen
    • A61B6/00
    • A61B6/482A61B6/027A61B6/06A61B6/4035A61B8/13G06T11/005G06T2211/421
    • An irradiation method, in particular for imaging a region of investigation (2) of an object (1), comprises generating at least one energy input beam (3) with at least one energy input beam source (210), wherein the at least one energy input beam (3) comprises a plurality of individual energy input beam components (3.1, 3.2, 3.3, . . . ), and irradiating the region of investigation (2) with the at least one energy input beam (3) along a plurality of projection directions, wherein the energy input beam components (3.1, 3.2, 3.3, . . . ) are formed with at least one beam mask (211) made of an energy input shielding material with through holes. Furthermore, imaging methods and devices for irradiating or imaging the object are described.
    • 特别是用于对物体(1)的调查区域(2)进行成像的照射方法包括用至少一个能量输入光束源(210)生成至少一个能量输入光束(3),其中至少一个 能量输入光束(3)包括多个单独的能量输入光束分量(3.1,3.2,3.3等),并且沿着多个辐射照射所述至少一个能量输入光束(3)的调查区域(2) 的投影方向,其中能量输入光束分量(3.1,3.2,3.3等)由至少一个由具有通孔的能量输入屏蔽材料制成的光束掩模(211)形成。 此外,描述用于照射或成像物体的成像方法和装置。
    • 7. 发明申请
    • RECONSTRUCTING A TOMOGRAPHIC IMAGE WITH REDUCED ARTIFACTS
    • 用减少的人造成重建图像
    • US20110266453A1
    • 2011-11-03
    • US13132841
    • 2009-12-04
    • Oleg TischenkoYuan XuChristoph Hoeschen
    • Oleg TischenkoYuan XuChristoph Hoeschen
    • G01T1/00G06K9/36
    • G06T11/008A61B6/027G06T11/005
    • A method of reconstructing a tomographic image of a region of investigation with reduced artifacts, said method comprises the steps of (a) reconstructing a first partial image and a second partial image of the region of investigation from first and second projection profiles each of which including projection data collected at first and second different groups of parallel projection lines, resp., wherein the first and second projection profiles are provided such that streak aliasing artifacts in the first and second partial images have different spatial phases, and (b) generating the tomographic image of the region of investigation by superimposing the first and second partial images. Preferably, the first and second projection profiles are constructed such that streak aliasing artifacts in the first and second partial images have opposite spatial phases relative to each other. Furthermore, an imaging method and an imaging device for imaging a region of investigation in an object are described.
    • 一种利用减少的伪像来重建调查区域的断层图像的方法,所述方法包括以下步骤:(a)从第一和第二投影轮廓重建调查区域的第一部分图像和第二部分图像,每个投影图包括 在第一和第二不同组的平行投影线上收集的投影数据,其中提供第一和第二投影轮廓,使得第一和第二部分图像中的条纹混叠伪影具有不同的空间相位,以及(b)产生断层图像 通过叠加第一和第二部分图像的调查区域的图像。 优选地,第一和第二投影轮廓被构造成使得第一和第二部分图像中的条纹混叠伪像相对于彼此具有相反的空间相位。 此外,描述了用于对物体中的调查区域进行成像的成像方法和成像装置。
    • 10. 发明申请
    • METHOD OF PROCESSING A RADON DATA BASED IMAGE FUNCTION AND IMAGING METHOD
    • 基于雷达数据的图像功能和成像方法的处理方法
    • US20100092050A1
    • 2010-04-15
    • US12527188
    • 2008-02-08
    • Christoph HoeschenOleg TischenkoYuan Xu
    • Christoph HoeschenOleg TischenkoYuan Xu
    • G06K9/36G06K9/64G06K9/00
    • G06T11/006
    • An image processing method for providing a digitized image as an approximation of an image function ƒ, wherein the digitized image comprises a plurality of pixels with a predetermined pixel size, comprises the steps of providing the image function ƒ from Radon data comprising a plurality of projection functions measured corresponding to a plurality of predetermined projection directions (ν), and determining pixel values from the image function, the pixel values representing the digitized image to be obtained, wherein the pixel values are determined in dependence on at least two image function values within the pixel size of the respective pixel. Furthermore, an imaging method and an imaging device using the image processing method are described.
    • 一种用于将数字化图像提供为图像函数ƒ近似的图像处理方法,其中所述数字化图像包括具有预定像素尺寸的多个像素,包括以下步骤:从包括多个投影的氡数据提供图像函数ƒ 根据多个预定投影方向测量的函数(&ngr;),以及根据图像函数确定表示要获得的数字化图像的像素值,其中根据至少两个图像函数值确定像素值 在相应像素的像素尺寸内。 此外,描述了使用该图像处理方法的成像方法和成像装置。