Patents by Inventor Stephanie J. Chiu
Stephanie J. Chiu 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: 10366492Abstract: Disclosed herein are systems and method for segmentation and identification of structured features in images. According to an aspect, a method may include representing an image as a graph of nodes connected together by edges. For example, the image may be an ocular image showing layered structures or other features of the retina. The method may also include adding, to the graph, nodes adjacent to nodes along first and second sides of the graph. The added nodes may have edge weights less than the nodes along the first and second sides of the graph. Further, the method may include assigning start and end points to any of the added nodes along the first and second sides, respectively. The method may also include graph cutting between the start and end points for identifying a feature in the image.Type: GrantFiled: January 31, 2017Date of Patent: July 30, 2019Assignee: Duke UniversityInventors: Sina Farsiu, Stephanie J. Chiu, Cynthia A. Toth, Joseph A. Izatt, Xiao T. Li, Peter Christopher Nicholas
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Patent number: 9940722Abstract: Segmentation and identification of closed-contour features in images using graph theory and quasi-polar transform are disclosed. According to an aspect, a method includes representing, in a rectangular domain, an image including a feature of interest. Further, the method includes determining a point within the feature of interest. The method also includes transforming the image of the feature from the rectangular domain to a quasi-polar domain based on the point. The quasi-polar domain is represented as a graph of nodes connected together by edges. The method also includes graph cutting the quasi-polar domain to identify the boundary of the feature of interest in the image.Type: GrantFiled: January 27, 2014Date of Patent: April 10, 2018Assignee: Duke UniversityInventors: Sina Farsiu, Stephanie J. Chiu, Joseph A. Izatt
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Publication number: 20170140544Abstract: Disclosed herein are systems and method for segmentation and identification of structured features in images. According to an aspect, a method may include representing an image as a graph of nodes connected together by edges. For example, the image may be an ocular image showing layered structures or other features of the retina. The method may also include adding, to the graph, nodes adjacent to nodes along first and second sides of the graph. The added nodes may have edge weights less than the nodes along the first and second sides of the graph. Further, the method may include assigning start and end points to any of the added nodes along the first and second sides, respectively. The method may also include graph cutting between the start and end points for identifying a feature in the image.Type: ApplicationFiled: January 31, 2017Publication date: May 18, 2017Inventors: Sina Farsiu, Stephanie J. Chiu, Cynthia A. Toth, Joseph A. Izatt, Xiao T. Li, Peter Christopher Nicholas
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Patent number: 9589346Abstract: Disclosed herein are systems and method for segmentation and identification of structured features in images. According to an aspect, a method may include representing an image as a graph of nodes connected together by edges. For example, the image may be an ocular image showing layered structures or other features of the retina. The method may also include adding, to the graph, nodes adjacent to nodes along first and second sides of the graph. The added nodes may have edge weights less than the nodes along the first and second sides of the graph. Further, the method may include assigning start and end points to any of the added nodes along the first and second sides, respectively. The method may also include graph cutting between the start and end points for identifying a feature in the image.Type: GrantFiled: February 21, 2016Date of Patent: March 7, 2017Assignee: Duke UniversityInventors: Sina Farsiu, Stephanie J. Chiu, Cynthia A. Toth, Josheph A. Izatt, Xiao T. Li, Peter Christopher Nicholas
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Publication number: 20160171688Abstract: Disclosed herein are systems and method for segmentation and identification of structured features in images. According to an aspect, a method may include representing an image as a graph of nodes connected together by edges. For example, the image may be an ocular image showing layered structures or other features of the retina. The method may also include adding, to the graph, nodes adjacent to nodes along first and second sides of the graph. The added nodes may have edge weights less than the nodes along the first and second sides of the graph. Further, the method may include assigning start and end points to any of the added nodes along the first and second sides, respectively. The method may also include graph cutting between the start and end points for identifying a feature in the image.Type: ApplicationFiled: February 21, 2016Publication date: June 16, 2016Inventors: Sina Farsiu, Stephanie J. Chiu, Cynthia A. Toth, Josheph A. Izatt, Xiao T. Li, Peter Christopher Nicholas
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Patent number: 9299155Abstract: Disclosed herein are systems and method for segmentation and identification of structured features in images. According to an aspect, a method may include representing an image as a graph of nodes connected together by edges. For example, the image may be an ocular image showing layered structures or other features of the retina. The method may also include adding, to the graph, nodes adjacent to nodes along first and second sides of the graph. The added nodes may have edge weights less than the nodes along the first and second sides of the graph. Further, the method may include assigning start and end points to any of the added nodes along the first and second sides, respectively. The method may also include graph cutting between the start and end points for identifying a feature in the image.Type: GrantFiled: July 21, 2014Date of Patent: March 29, 2016Assignee: Duke UniversityInventors: Sina Farsiu, Stephanie J. Chiu, Cynthia A. Toth, Joseph A. Izatt, Xiao T. Li, Peter Christopher Nicholas
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Publication number: 20150371400Abstract: Segmentation and identification of closed-contour features in images using graph theory and quasi-polar transform are disclosed. According to an aspect, a method includes representing, in a rectangular domain, an image including a feature of interest. Further, the method includes determining a point within the feature of interest. The method also includes transforming the image of the feature from the rectangular domain to a quasi-polar domain based on the point. The quasi-polar domain is represented as a graph of nodes connected together by edges. The method also includes graph cutting the quasi-polar domain to identify the boundary of the feature of interest in the image.Type: ApplicationFiled: January 27, 2014Publication date: December 24, 2015Inventors: Sina Farsiu, Stephanie J. Chiu, Joseph A. Izatt
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Publication number: 20150342460Abstract: Imaging and visualization systems, instruments, and methods using optical coherence tomography (OCT) are disclosed. A method for OCT image capture includes determining a location of a feature of interest within an operative field. The method also includes determining a relative positioning between the feature of interest and an OCT scan location. Further, the method includes controlling capture of an OCT image at a set position relative to the feature of interest based on the relative positioning.Type: ApplicationFiled: August 11, 2015Publication date: December 3, 2015Inventors: Joseph A. Izatt, Cynthia A. Toth, Sina Farsiu, Paul V. Hahn, Yuankai K. Tao, Justis P. Ehlers, Justin V. Migacz, Stephanie J. Chiu
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Publication number: 20140334703Abstract: Disclosed herein are systems and method for segmentation and identification of structured features in images. According to an aspect, a method may include representing an image as a graph of nodes connected together by edges. For example, the image may be an ocular image showing layered structures or other features of the retina. The method may also include adding, to the graph, nodes adjacent to nodes along first and second sides of the graph. The added nodes may have edge weights less than the nodes along the first and second sides of the graph. Further, the method may include assigning start and end points to any of the added nodes along the first and second sides, respectively. The method may also include graph cutting between the start and end points for identifying a feature in the image.Type: ApplicationFiled: July 21, 2014Publication date: November 13, 2014Inventors: Sina Farsiu, Stephanie J. Chiu, Cynthia A. Toth, Joseph A. Izatt, Xiao T. Li, Peter Christopher Nicholas
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Patent number: 8811745Abstract: Disclosed herein are systems and method for segmentation and identification of structured features in images. According to an aspect, a method may include representing an image as a graph of nodes connected together by edges. For example, the image may be an ocular image showing layered structures or other features of the retina. The method may also include adding, to the graph, nodes adjacent to nodes along first and second sides of the graph. The added nodes may have edge weights less than the nodes along the first and second sides of the graph. Further, the method may include assigning start and end points to any of the added nodes along the first and second sides, respectively. The method may also include graph cutting between the start and end points for identifying a feature in the image.Type: GrantFiled: January 20, 2011Date of Patent: August 19, 2014Assignee: Duke UniversityInventors: Sina Farsiu, Stephanie J. Chiu, Cynthia A. Toth, Joseph A. Izatt, Xiao T. Li, Peter Christopher Nicholas
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Publication number: 20120184846Abstract: Imaging and visualization systems, instruments, and methods using optical coherence tomography (OCT) are disclosed. A method for OCT image capture includes determining a location of a feature of interest within an operative field. The method also includes determining a relative positioning between the feature of interest and an OCT scan location. Further, the method includes controlling capture of an OCT image at a set position relative to the feature of interest based on the relative positioning.Type: ApplicationFiled: January 19, 2012Publication date: July 19, 2012Applicant: DUKE UNIVERSITYInventors: Joseph A. Izatt, Cynthia A. Toth, Sina Farsiu, Paul Hahn, Yuankai K. Tao, Justis P. Ehlers, Justin V. Migacz, Stephanie J. Chiu
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Publication number: 20110182517Abstract: Disclosed herein are systems and method for segmentation and identification of structured features in images. According to an aspect, a method may include representing an image as a graph of nodes connected together by edges. For example, the image may be an ocular image showing layered structures or other features of the retina. The method may also include adding, to the graph, nodes adjacent to nodes along first and second sides of the graph. The added nodes may have edge weights less than the nodes along the first and second sides of the graph. Further, the method may include assigning start and end points to any of the added nodes along the first and second sides, respectively. The method may also include graph cutting between the start and end points for identifying a feature in the image.Type: ApplicationFiled: January 20, 2011Publication date: July 28, 2011Applicant: DUKE UNIVERSITYInventors: Sina Farsiu, Stephanie J. Chiu, Cynthia A. Toth, Joseph A. Izatt, Xiao T. Li, Peter Christopher Nicholas