Patents by Inventor Martin Schaffer
Martin Schaffer 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: 11954767Abstract: Methods, systems, and computer readable media for generating a three-dimensional reconstruction of an object with reduced distortion are described. In some aspects, a system includes at least two image sensors, at least two projectors, and a processor. Each image sensor is configured to capture one or more images of an object. Each projector is configured to illuminate the object with an associated optical pattern and from a different perspective. The processor is configured to perform the acts of receiving, from each image sensor, for each projector, images of the object illuminated with the associated optical pattern and generating, from the received images, a three-dimensional reconstruction of the object. The three-dimensional reconstruction has reduced distortion due to the received images of the object being generated when each projector illuminates the object with an associated optical pattern from the different perspective.Type: GrantFiled: January 20, 2023Date of Patent: April 9, 2024Assignee: Cognex CorporationInventors: Martin Schaffer, Marcus Große
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Publication number: 20230222707Abstract: Methods, systems, and computer readable media for generating a three-dimensional reconstruction of an object with reduced distortion are described. In some aspects, a system includes at least two image sensors, at least two projectors, and a processor. Each image sensor is configured to capture one or more images of an object. Each projector is configured to illuminate the object with an associated optical pattern and from a different perspective. The processor is configured to perform the acts of receiving, from each image sensor, for each projector, images of the object illuminated with the associated optical pattern and generating, from the received images, a three-dimensional reconstruction of the object. The three-dimensional reconstruction has reduced distortion due to the received images of the object being generated when each projector illuminates the object with an associated optical pattern from the different perspective.Type: ApplicationFiled: January 20, 2023Publication date: July 13, 2023Applicant: Cognex CorporationInventors: Martin Schaffer, Marcus Große
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Patent number: 11593954Abstract: In some aspects, the techniques described herein relate to systems, methods, and computer readable media for data pre-processing for stereo-temporal image sequences to improve three-dimensional data reconstruction. In some aspects, the techniques described herein relate to systems, methods, and computer readable media for improved correspondence refinement for image areas affected by oversaturation. In some aspects, the techniques described herein relate to systems, methods, and computer readable media configured to fill missing correspondences to improve three-dimensional (3-D) reconstruction. The techniques include identifying image points without correspondences, using existing correspondences and/or other information to generate approximated correspondences, and cross-checking the approximated correspondences to determine whether the approximated correspondences should be used for the image processing.Type: GrantFiled: July 7, 2021Date of Patent: February 28, 2023Assignee: Cognex CorporationInventors: Marcus Große, Martin Schaffer, Simon Willeke
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Patent number: 11587268Abstract: Methods, systems, and computer readable media for generating a three-dimensional reconstruction of an object with reduced distortion are described. In some aspects, a system includes at least two image sensors, at least two projectors, and a processor. Each image sensor is configured to capture one or more images of an object. Each projector is configured to illuminate the object with an associated optical pattern and from a different perspective. The processor is configured to perform the acts of receiving, from each image sensor, for each projector, images of the object illuminated with the associated optical pattern and generating, from the received images, a three-dimensional reconstruction of the object. The three-dimensional reconstruction has reduced distortion due to the received images of the object being generated when each projector illuminates the object with an associated optical pattern from the different perspective.Type: GrantFiled: August 29, 2019Date of Patent: February 21, 2023Assignee: Cognex CorporationInventors: Martin Schaffer, Marcus Große
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Publication number: 20210407110Abstract: In some aspects, the techniques described herein relate to systems, methods, and computer readable media for data pre-processing for stereo-temporal image sequences to improve three-dimensional data reconstruction. In some aspects, the techniques described herein relate to systems, methods, and computer readable media for improved correspondence refinement for image areas affected by oversaturation. In some aspects, the techniques described herein relate to systems, methods, and computer readable media configured to fill missing correspondences to improve three-dimensional (3-D) reconstruction. The techniques include identifying image points without correspondences, using existing correspondences and/or other information to generate approximated correspondences, and cross-checking the approximated correspondences to determine whether the approximated correspondences should be used for the image processing.Type: ApplicationFiled: July 7, 2021Publication date: December 30, 2021Applicant: Cognex CorporationInventors: Marcus Große, Martin Schaffer, Simon Willeke
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Patent number: 11107268Abstract: The techniques described herein relate to methods, apparatus, and computer readable media for efficiently processing data of initial correspondence assignments, e.g., for three-dimensional reconstruction of an object. In some aspects, the system includes a processor configured to perform the acts of receiving a first set of images of a scene and a second set of images of the scene, determining a first pixel fingerprint based on the first set of images and a second pixel fingerprint based on the second set of images, generating a first binary pixel fingerprint based on the first pixel fingerprint and a second binary pixel fingerprint based on the second pixel fingerprint, and determining whether there exists a stereo correspondence between the first pixel fingerprint and the second pixel fingerprint at least in part based on comparing the first binary pixel fingerprint and the second binary pixel fingerprint.Type: GrantFiled: August 29, 2019Date of Patent: August 31, 2021Assignee: Cognex CorporationInventors: Marcus Große, Martin Schaffer, Simon Willeke, Bastian Harendt
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Patent number: 11074700Abstract: In some aspects, the techniques described herein relate to systems, methods, and computer readable media for generating, based on a set of images, a temporal pixel image comprising a set of temporal pixels, where each temporal pixel in the set of temporal pixels comprises a set of pixel values at an associated position from each image of the set of images. For a first temporal pixel from the set of temporal pixels, saturation data comprising a set of saturation values is generated, where each saturation value of the set of saturation values is associated with a pixel value of the set of pixel values of the first temporal pixel, and each pixel value is compared to a metric to determine a corresponding saturation value.Type: GrantFiled: April 23, 2019Date of Patent: July 27, 2021Assignee: Cognex CorporationInventors: Marcus Große, Martin Schaffer, Bastian Harendt
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Patent number: 11069074Abstract: In some aspects, the techniques described herein relate to systems, methods, and computer readable media for data pre-processing for stereo-temporal image sequences to improve three-dimensional data reconstruction. In some aspects, the techniques described herein relate to systems, methods, and computer readable media for improved correspondence refinement for image areas affected by oversaturation. In some aspects, the techniques described herein relate to systems, methods, and computer readable media configured to fill missing correspondences to improve three-dimensional (3-D) reconstruction. The techniques include identifying image points without correspondences, using existing correspondences and/or other information to generate approximated correspondences, and cross-checking the approximated correspondences to determine whether the approximated correspondences should be used for the image processing.Type: GrantFiled: April 23, 2019Date of Patent: July 20, 2021Assignee: Cognex CorporationInventors: Marcus Große, Martin Schaffer, Simon Willeke
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Patent number: 10648798Abstract: A device for projecting a time variable optical pattern onto an object that is to be measured in three dimensions, the device comprising a frame for an optical pattern; a light source with optional illumination optics; and imaging optics, wherein the optical pattern is on slide that is attached to a movement mechanism that moves the optical pattern relative to the optional illumination optics and/or relative to the imaging optics, wherein the movement mechanism causes a movement of the optical pattern in a slide plane that is oriented orthogonal to an optical axis of the imaging optics.Type: GrantFiled: December 16, 2018Date of Patent: May 12, 2020Assignee: Cognex CorporationInventors: Jens Petersen, Martin Schaffer, Bastian Harendt
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Publication number: 20200082605Abstract: The techniques described herein relate to methods, apparatus, and computer readable media for efficiently processing data of initial correspondence assignments, e.g., for three-dimensional reconstruction of an object. In some aspects, the system includes a processor configured to perform the acts of receiving a first set of images of a scene and a second set of images of the scene, determining a first pixel fingerprint based on the first set of images and a second pixel fingerprint based on the second set of images, generating a first binary pixel fingerprint based on the first pixel fingerprint and a second binary pixel fingerprint based on the second pixel fingerprint, and determining whether there exists a stereo correspondence between the first pixel fingerprint and the second pixel fingerprint at least in part based on comparing the first binary pixel fingerprint and the second binary pixel fingerprint.Type: ApplicationFiled: August 29, 2019Publication date: March 12, 2020Applicant: Cognex CorporationInventors: Marcus Große, Martin Schaffer, Simon Willeke, Bastian Harendt
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Publication number: 20200074698Abstract: Methods, systems, and computer readable media for generating a three-dimensional reconstruction of an object with reduced distortion are described. In some aspects, a system includes at least two image sensors, at least two projectors, and a processor. Each image sensor is configured to capture one or more images of an object. Each projector is configured to illuminate the object with an associated optical pattern and from a different perspective. The processor is configured to perform the acts of receiving, from each image sensor, for each projector, images of the object illuminated with the associated optical pattern and generating, from the received images, a three-dimensional reconstruction of the object. The three-dimensional reconstruction has reduced distortion due to the received images of the object being generated when each projector illuminates the object with an associated optical pattern from the different perspective.Type: ApplicationFiled: August 29, 2019Publication date: March 5, 2020Applicant: Cognex CorporationInventors: Martin Schaffer, Marcus Große
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Publication number: 20190325598Abstract: In some aspects, the techniques described herein relate to systems, methods, and computer readable media for data pre-processing for stereo-temporal image sequences to improve three-dimensional data reconstruction. In some aspects, the techniques described herein relate to systems, methods, and computer readable media for improved correspondence refinement for image areas affected by oversaturation. In some aspects, the techniques described herein relate to systems, methods, and computer readable media configured to fill missing correspondences to improve three-dimensional (3-D) reconstruction. The techniques include identifying image points without correspondences, using existing correspondences and/or other information to generate approximated correspondences, and cross-checking the approximated correspondences to determine whether the approximated correspondences should be used for the image processing.Type: ApplicationFiled: April 23, 2019Publication date: October 24, 2019Applicant: Cognex CorporationInventors: Marcus Große, Martin Schaffer, Bastian Harendt
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Publication number: 20190325594Abstract: In some aspects, the techniques described herein relate to systems, methods, and computer readable media for data pre-processing for stereo-temporal image sequences to improve three-dimensional data reconstruction. In some aspects, the techniques described herein relate to systems, methods, and computer readable media for improved correspondence refinement for image areas affected by oversaturation. In some aspects, the techniques described herein relate to systems, methods, and computer readable media configured to fill missing correspondences to improve three-dimensional (3-D) reconstruction. The techniques include identifying image points without correspondences, using existing correspondences and/or other information to generate approximated correspondences, and cross-checking the approximated correspondences to determine whether the approximated correspondences should be used for the image processing.Type: ApplicationFiled: April 23, 2019Publication date: October 24, 2019Applicant: Cognex CorporationInventors: Marcus Große, Martin Schaffer, Simon Willeke
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Publication number: 20190137267Abstract: A device for projecting a time variable optical pattern onto an object that is to be measured in three dimensions, the device comprising a frame for an optical pattern; a light source with optional illumination optics; and imaging optics, wherein the optical pattern is on slide that is attached to a movement mechanism that moves the optical pattern relative to the optional illumination optics and/or relative to the imaging optics, wherein the movement mechanism causes a movement of the optical pattern in a slide plane that is oriented orthogonal to an optical axis of the imaging optics.Type: ApplicationFiled: December 16, 2018Publication date: May 9, 2019Inventors: Jens Petersen, Martin Schaffer, Bastian Harendt
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Patent number: 8817974Abstract: Various embodiments relate to a method for integrity protected calculation of a cryptographic function including: performing an operation c=a?b in a cryptographic function f(x1, x2, . . . , xn) defined over a commutative ring R; choosing a? and b? corresponding to a and b such that a? and b? are elements of a commutative ring R?; computing c?=a???b?; computing a?=CRT(a, a?) and b?=CRT(b, b?), where CRT is the Chinese Remainder Theorem; computing c?=a???b?; mapping c? into R?; and determining if the mapping of c? into R? equals c?.Type: GrantFiled: May 11, 2011Date of Patent: August 26, 2014Assignee: NXP B.V.Inventors: Martin Schaffer, Bruce Murray
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Publication number: 20120288086Abstract: Various embodiments relate to a method for integrity protected calculation of a cryptographic function including: performing an operation c=a?b in a cryptographic function f(x1, x2, . . . , xn) defined over a commutative ring R; choosing a? and b? corresponding to a and b such that a? and b? are elements of a commutative ring R?; computing c?=a???b?; computing a?=CRT(a, a?) and b?=CRT(b, b?), where CRT is the Chinese Remainder Theorem; computing c?=a???b?; mapping c? into R?; and determining if the mapping of c? into R? equals c?.Type: ApplicationFiled: May 11, 2011Publication date: November 15, 2012Applicant: NXP B.V.Inventors: Martin Schaffer, Bruce Murray
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Patent number: 6589478Abstract: The invention relates to a device for carrying out the process, which enables the disinfection of flat and enclosing surfaces using steam. In order to achieve this, a disinfection head 1, which exhibits a nozzle assembly 3 and a suction bell 6, is connected to a holder 2 such that it can move. The holder has an inlet hose 13 to enable the steam to be introduced into the disinfection head and an outlet suction hose 7. The inlet hose is connected to an initial evaporator cell 9 and the outlet suction hose is connected to a collection container 8. The initial evaporator cell, the collection is container, the suction pumps and the necessary valves and heating elements are joined together in a mobile unit 23.Type: GrantFiled: September 15, 2000Date of Patent: July 8, 2003Assignees: Genoveva BeurerInventors: Bettina Keim, Martin Schaffer