Patents by Inventor Randolf Hanke
Randolf Hanke has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11906292Abstract: An example of a method for time-resolved calculation of a deformation of a body comprises calculating (110) a model of the body during the deformation. The method further comprises calculating (120) a predicted X-ray image for the body for a plurality of time points during the deformation based on the model. The method further comprises obtaining (130) one measured X-ray image of the body each for the time points during the deformation. The method further comprises modifying (140) the model based on the predicted X-ray images and the measured X-ray images.Type: GrantFiled: April 8, 2020Date of Patent: February 20, 2024Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.Inventors: Stefan Hiermaier, Randolf Hanke, Siegfried Nau, Stefan Moser, Norman Uhlmann, Jens Fritsch, Malte Kurfiss, Rolf Behrend, Ines Butz
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Publication number: 20220196397Abstract: An example of a method for time-resolved calculation of a deformation of a body comprises calculating (110) a model of the body during the deformation. The method further comprises calculating (120) a predicted X-ray image for the body for a plurality of time points during the deformation based on the model. The method further comprises obtaining (130) one measured X-ray image of the body each for the time points during the deformation. The method further comprises modifying (140) the model based on the predicted X-ray images and the measured X-ray images.Type: ApplicationFiled: April 8, 2020Publication date: June 23, 2022Inventors: Stefan HIERMAIER, Randolf HANKE, Siegfried NAU, Stefan MOSER, Norman UHLMANN, Jens FRITSCH, Malte KURFISS, Rolf BEHREND, Ines BUTZ
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Patent number: 8781064Abstract: A multi-dimensional representation of an object is obtained in that first and second pictures of the object illuminated using an X-ray source are created using a sensor that is located, in relation to the X-ray source, behind the object in a preferential direction defined by the relative positions of the object and of the sensor. A distance in the preferential direction between the X-ray source and the object is different in the first picture than in the second picture. The multi-dimensional representation of the object is obtained by combining the first and second pictures.Type: GrantFiled: December 4, 2012Date of Patent: July 15, 2014Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Theobald Fuchs, Tobias Schoen, Randolf Hanke
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Patent number: 8345817Abstract: A multi-dimensional representation of an object is obtained in that first and second pictures of the object illuminated using an X-ray source are created using a sensor that is located, in relation to the X-ray source, behind the object in a preferential direction defined by the relative positions of the object and of the sensor. A distance in the preferential direction between the X-ray source and the object is different in the first picture than in the second picture. The multi-dimensional representation of the object is obtained by combining the first and second pictures.Type: GrantFiled: April 9, 2009Date of Patent: January 1, 2013Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.Inventors: Theobald Fuchs, Tobias Schoen, Randolf Hanke
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Patent number: 8229061Abstract: In an X-ray computer tomograph and a method for examining a component by means of X-ray computer tomography, the component carries out a movement relative to a radiation source detector unit in at least two degrees of freedom of movement, so at least one trajectory can be produced which spans a three-dimensional space. Since the X-radiation has a three-dimensional radiation geometry, volume data can be rapidly obtained and precisely reconstructed to form a three-dimensional X-ray image. The component can be geometrically measured by means of a geometry detection unit.Type: GrantFiled: April 21, 2009Date of Patent: July 24, 2012Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.Inventors: Randolf Hanke, Theobald Fuchs, Tobias Schön, Michael Maisl, Stefan Kasperl
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Publication number: 20110110487Abstract: A multi-dimensional representation of an object is obtained in that first and second pictures of the object illuminated using an X-ray source are created using a sensor that is located, in relation to the X-ray source, behind the object in a preferential direction defined by the relative positions of the object and of the sensor. A distance in the preferential direction between the X-ray source and the object is different in the first picture than in the second picture. The multi-dimensional representation of the object is obtained by combining the first and second pictures.Type: ApplicationFiled: April 9, 2009Publication date: May 12, 2011Inventors: Theobald Fuchs, Tobias Schoen, Randolf Hanke
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Publication number: 20110103546Abstract: In an X-ray computer tomograph and a method for examining a component by means of X-ray computer tomography, the component carries out a movement relative to a radiation source detector unit in at least two degrees of freedom of movement, so at least one trajectory can be produced which spans a three-dimensional space. Since the X-radiation has a three-dimensional radiation geometry, volume data can be rapidly obtained and precisely reconstructed to form a three-dimensional X-ray image. The component can be geometrically measured by means of a geometry detection unit.Type: ApplicationFiled: April 21, 2009Publication date: May 5, 2011Inventors: Randolf Hanke, Theobald Fuchs, Tobias Schön, Michael Maisl, Stefan Kasperl
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Publication number: 20050154563Abstract: An apparatus for evaluating a state of an object includes a means for providing a three-dimensional representation of the object including information about the state to be evaluated. The three-dimensional representation is then subdivided into a plurality of sub-areas that are subsequently evaluated sub-area by sub-area, namely by two-dimensionally examining each sub-area of the plurality of sub-areas, in order to ascertain data about a place in a sub-area at which the state deviates from a default state. A three-dimensional connection analysis using the data about the places from the individual sub-areas provides a three-dimensional description of a three-dimensional place whose state deviates from the default state. By splitting up the three-dimensional representation into several sub-areas that may be analyzed two-dimensionally, powerful image processing algorithms may be employed. The three-dimensionality is then again achieved by means of a connection analysis of the two-dimensional data.Type: ApplicationFiled: February 27, 2004Publication date: July 14, 2005Inventors: Ulf Hassler, Steven Oeckl, Thomas Wenzel, Randolf Hanke, Guenther Kostka
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Publication number: 20040066908Abstract: The invention is based on the knowledge that a representation of an object can be improved via a transmission with regard to a subsequent reconstruction of the object based on the representation, by using simulated data, which correspond to a simulated transmission of the object already prior to a reconstruction as advance information for measuring a transmission of the object and/or for generating the representation from a measured transmission. An inventive method for the representation of an object via a transmission comprises providing simulated data, which correspond to a simulated transmission of the object, for example in a memory, and using the simulated data for measuring a transmission of the object, for example in a computertomograph, to obtain the transmission of the object, by a control and/or using the simulated data for generating the representation from a measured transmission by a data preparation means.Type: ApplicationFiled: September 22, 2003Publication date: April 8, 2004Inventors: Randolf Hanke, Stefan Schropfer, Heinz Gerhaeuser, Dietrich Paulus
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Patent number: 6539789Abstract: A device for the contactless detection of a potentially existing essentially edge-free irregularity in a convex surface, which has a structuring that is delimited by edges, comprises a unit for creating a three-dimensional representation of the surface, a unit for extracting the convexity from the three-dimensional representation of the surface and for smoothing the edges of the structuring so as to obtain a convex-free representation of the convex surface which exhibits the irregularity and the structuring, whose edges have now been smoothed, a unit for comparing the convex-free representation with a threshold value so as to identify areal regions of the convex-free representation which are determined by a predetermined relationship to the threshold value, and a unit for analyzing the areas of the identified regions, a region being detected as an irregularity if its area exceeds a predetermined area.Type: GrantFiled: July 16, 2001Date of Patent: April 1, 2003Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung e. V.Inventors: Guenther Kostka, Peter Schmitt, Ulf Hassler, Randolf Hanke
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Patent number: 6501066Abstract: An arrangement for reading photo-stimulable storage luminescent substances comprises an excitation glass fiber into which light which excites the storage luminescent substance can be fed by means of a light source. Light emitted by the excited storage luminescent substance can be fed into a receiving glass fiber, an end of the excitation glass fiber which is positioned close to the storage luminescent substance being arranged next to an end of the receiving glass fiber which can be positioned close to the storage luminescent substance. The excitation glass fiber (12) has a first numerical aperture and the receiving glass fiber has a second numerical aperture which is large compared with the first numerical aperture, as a result of which the light fed out from the excitation glass fiber is directed straight onto the storage luminescent substance without an optical arrangement and the stimulated light can be captured by the receiving glass fiber without an optical arrangement.Type: GrantFiled: March 1, 2000Date of Patent: December 31, 2002Assignee: Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung, E.V.Inventors: Oliver Schreck, Randolf Hanke
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Patent number: 6497511Abstract: In a method for imaging in digital dental radioscopy making use of a sensor array, the individual image elements of which are smaller than a desired local resolution so that a plurality of image elements forms a respective effective image element, first reference signals, which are generated by the image elements of the sensor array when said sensor array is not exposed to X-radiation, are initially detected. In addition, second reference signals, which are generated by the image elements of the sensor array when said sensor array is exposed to X-radiation, are detected. Subsequently, defective image elements are determined on the basis of the detected first and second reference signals, whereupon an image of an object is produced using exclusively the image elements that have been determined as being non-defective.Type: GrantFiled: December 22, 2000Date of Patent: December 24, 2002Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Peter Schmitt, Günther Kostka, Randolf Hanke
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Patent number: 6403962Abstract: A device for detecting X-radiation comprises a scintillator for converting X-radiation impinging thereon into light, a detecting device for detecting the light produced by the scintillator, and a fibre optic system for feeding the light produced by the scintillator to the detecting device. The device for detecting X-radiation is additionally provided with a heating means for heating at least one section of the fibre optic system to a predetermined temperature while the X-radiation is being detected.Type: GrantFiled: March 29, 2000Date of Patent: June 11, 2002Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.Inventors: Peter Schmitt, Randolf Hanke, Norbert Bauer, Michael Maisl