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15 条记录 (耗时 0.016 秒)

    DARSTELLUNG EINES OBJEKTES MITTELS EINER DURCHSTRAHLUNG SOWIE REKONSTRUKTION UNTER VERWENDUNG VON SIMULIERTEN DURCHSTRAHLUNGSDATEN
    3.
    发明授权
    DARSTELLUNG EINES OBJEKTES MITTELS EINER DURCHSTRAHLUNG SOWIE REKONSTRUKTION UNTER VERWENDUNG VON SIMULIERTEN DURCHSTRAHLUNGSDATEN 有权
    使用模拟BY辐射数据的物体通过辐射和重建生产资料PRESENTATION

    公开(公告)号：EP1325471B1

    公开(公告)日：2011-05-04

    申请号：EP01986787.8

    申请日：2001-10-11

    申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

    发明人： HANKE, Randolf ,  SCHRÖPFER, Stefan ,  GERHÄUSER, Heinz ,  PAULUS, Dietrich

    IPC分类号： G06T11/00

    CPC分类号： G06T11/005 ,  A61B6/5258

    摘要： The invention is based on the fact that a representation of an object can be improved by means of an irradiation, in view of an ensuing reconstruction of the object based on the representation. In order to achieve this, simulated data corresponding to a simulated irradiation of the object is used, before a reconstruction, as prior information for measuring an irradiation of the object and/or for producing the representation from a measured irradiation. The invention relates to a method for representing an object (10) by means of an irradiation. Said method involves preparing simulated data corresponding to a simulated irradiation of the object (10), in a memory (20) for example; using the simulated data for measuring an irradiation of the object (10) by means of a control mechanism (24), in a CT scanner (12) for example, in order to obtain the irradiation of the object; and/or using the simulated data for producing the representation from a measured irradiation by means of a data preparation device (26).

    RÖNTGENCOMPUTERTOMOGRAPH UND VERFAHREN ZUR UNTERSUCHUNG EINES BAUTEILS MITTELS RÖNTGENCOMPUTERTOMOGRAPHIE
    4.
    发明公开
    RÖNTGENCOMPUTERTOMOGRAPH UND VERFAHREN ZUR UNTERSUCHUNG EINES BAUTEILS MITTELS RÖNTGENCOMPUTERTOMOGRAPHIE 有权
    RÖNTGENCOMPUTERTOMOGRAPHUND VERFAHREN ZUR UNTERSUCHUNG EINES BAUTEILS MITTELSRÖNTGENCOMPUTERTOMOGRAPHIE

    公开(公告)号：EP2269042A1

    公开(公告)日：2011-01-05

    申请号：EP09733896.6

    申请日：2009-04-21

    申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

    发明人： HANKE, Randolf ,  FUCHS, Theobald ,  SCHÖN, Tobias ,  MAISL, Michael ,  KASPERL, Stefan

    IPC分类号： G01N23/04 ,  G01T1/29

    CPC分类号： G01N23/046 ,  A61B6/027 ,  G01N2223/419

    摘要： The invention relates to an X-ray computer tomograph (1) and a method for investigating a component (2) by means of X-ray computer tomography, wherein the component (2) carries out a movement relative to the radiation source/detector unit (3) with at least two degrees of freedom of movement, such that at least one trajectory may be generated which extends over a three-dimensional space. As the X-ray radiation has a three-dimensional radiation geometry, volume data can be quickly and easily obtained and reconstructed accurately to give a three-dimensional X-ray image. The component (2) can be geometrically measured by means of a geometry recording unit (18).

    摘要翻译： 本发明涉及一种X射线计算机断层摄影装置（1）和一种借助于X射线计算机断层摄影术来检查构件（2）的方法，其中构件（2）相对于辐射源/检测器单元 （3）具有至少两个运动自由度，使得可以产生在三维空间上延伸的至少一个轨迹。 由于X射线辐射具有三维辐射几何形状，所以可以快速且容易地获得并容易地重建体数据以提供三维X射线图像。 部件（2）可以通过几何形状记录单元（18）进行几何测量。

    UNEBENHEITEN IN EINER GEWÖLBTEN OBERFLÄCHE, WIE REIFENSEITENWAND, MIT BANDPASSFILTERUNG
    5.
    发明授权
    UNEBENHEITEN IN EINER GEWÖLBTEN OBERFLÄCHE, WIE REIFENSEITENWAND, MIT BANDPASSFILTERUNG 有权
    凹凸曲面与带通滤波器轮胎侧壁

    公开(公告)号：EP1123483B1

    公开(公告)日：2004-10-06

    申请号：EP99944369.0

    申请日：1999-08-12

    申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

    发明人： KOSTKA, Günther ,  SCHMITT, Peter ,  HASSLER, Ulf ,  HANKE, Randolf

    IPC分类号： G01B21/20 ,  G01B11/24 ,  G01M17/02

    CPC分类号： G01B11/25 ,  G01M17/027 ,  G06T7/521 ,  G06T2207/30108

    摘要： The invention relates to the detection of an edge-free irregularity (50b) in a convex surface which comprises a structuring (50a) that is delimited by edges. According to the invention, a three-dimensional representation of the surface is generated. The convexity is extracted from the three-dimensional representation of the surface, and the edges of the structuring are smoothed in order to obtain a convex-free representation of the convex surface which exhibits the irregularity and the structuring whose edges are now smoothed. The convex-free representation is compared with a threshold value in order to detect the flat areas of the convex-free representation. The surfaces of the detected areas (50a, 50b) are analyzed, whereby an area (50b) is detected as being irregular when the surface thereof is larger than its predetermined surface. Bulges or constrictions can be identified with certainty during real-time operation by using this device for carrying out quality control of tires, and can be differentiated from a marking which is intentionally provided on the tire. Band-pass filtering is carried out by means of two low-pass filters. The smoothing is non-linear. Pixel artifacts and singular artifacts are removed. A media filter is used.

    VORRICHTUNG UND VERFAHREN ZUM AUSWERTEN EINER BESCHAFFENHEIT EINES OBJEKTS
    8.
    发明授权
    VORRICHTUNG UND VERFAHREN ZUM AUSWERTEN EINER BESCHAFFENHEIT EINES OBJEKTS 有权
    装置和方法用于评价对象的纹理

    公开(公告)号：EP1421559B1

    公开(公告)日：2006-03-15

    申请号：EP02772209.9

    申请日：2002-08-26

    申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

    发明人： HASSLER, Ulf ,  OECKL, Steven ,  WENZEL, Thomas ,  HANKE, Randolf ,  KOSTKA, Günther

    IPC分类号： G06T7/00

    CPC分类号： G06T7/0004 ,  G06K9/00201 ,  G06T2207/30164

    摘要： The invention relates to a device for evaluating a characteristic of an object. Said device comprises a system (10) for preparing a three-dimensional representation of an object, said representation containing information about the characteristic to be evaluated. The three-dimensional representation is sub-divided into a plurality of partial areas (12) which are then evaluated one by one, each partial area of the plurality of partial areas being examined (14) in a two-dimensional manner, in order to determine data relating to a location in a partial area, in which the characteristic differs from a pre-determined characteristic. Using the data relating to the locations in the individual partial areas, a three-dimensional coherence analysis (16) provides a three-dimensional description of a three-dimensional location, the characteristic of said location differing from the pre-determined characteristic. By sub-dividing the three-dimensional representation into a plurality of partial areas which can be analysed in a two-dimensional manner, effective image processing algorithms can be used. The three-dimensionality can then be achieved again by means of a coherence analysis of the two-dimensional data. In this way, a geometrical reference model is superfluous and the resulting high requirement for memory and calculation time is eliminated.

    ANORDNUNG ZUM AUSLESEN PHOTOSTIMULIERBARER SPEICHERLEUCHTSTOFFE
    9.
    发明授权
    ANORDNUNG ZUM AUSLESEN PHOTOSTIMULIERBARER SPEICHERLEUCHTSTOFFE 失效
    安排用于读取光激励存储荧光粉

    公开(公告)号：EP0970404B1

    公开(公告)日：2001-01-24

    申请号：EP98937440.0

    申请日：1998-06-03

    申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.

    发明人： SCHRECK, Oliver ,  HANKE, Randolf

    IPC分类号： G01T1/29 ,  G03B42/00

    CPC分类号： G01T1/2014

    摘要： The invention relates to a system (10) for reading photo-stimulated accumulative luminescent substances, comprising an excitation glass fibre (12) into which light can be fed by means of a light source (20), said light source (20) exciting the accumulative luminescent substance. A light emitted by the excited accumulative luminescent substance can be fed into a receiving glass fibre (14). An end of the excitation glass fibre (12) which is positioned closely to the accumulative luminescent substance is also situated close to an end of the receiving glass fibre (14) which can be positioned close to the accumulative luminescent substance. Said excitation glass fibre (12) has a first numerical aperture, the receiving glass fibre (14) having a second numerical aperture which is large in comparison to said first numerical aperture. As a result, the light fed out by the excitation glass fibre (12) is directed straight onto the accumulative luminescent substance without an optical system and the light which is stimulated can be captured by the receiving glass fibre (14) without an optical system. A glass fibre drum scanner uses the inventive system to read the luminescent substance two-dimensionally by means of an advancing device which moves the one end of the excitation glass fibre and the receiving glass fibre in one direction, and a rotating drum to which the luminescent substance is attached.