Patents by Inventor Barbara Farrell

Barbara Farrell 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).

  • Patent number: 8254694
    Abstract: Disclosed herein is a method for detecting thin lines in image data. The method is performed by a processor to process contone image data. The processing includes thresholding a window of pixels established in the contone domain to generate a binary window of image data, and then determining characteristics associated with on pixels or runs of the binary data. The characteristics (start and end locations, length of on runs) are then thresholded. The processing in the contone and binary domain are used to determine if a thin line exists in the window of image data. The disclosed method produces better quality output images and reduces the addition of false lines in an image.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: August 28, 2012
    Assignee: Xerox Corporation
    Inventors: Xing Li, Ryan Metcalfe, Peter McCandlish, Barbara Farrell
  • Patent number: 8224112
    Abstract: Disclosed herein is a method for detecting thin lines in image data. The method is performed by a processor to process contone image data. The processing includes thresholding a window of pixels using a first set of thresholds established in the contone domain, and then counting and thresholding the binary pixels using a second set of thresholds. The processing in the contone and binary domain are used to determine if a thin line exists and if a pixel of interest in the window is an edge pixel that is part of a thin line. The disclosed method produces better quality output images and reduces the addition of false lines in an image.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: July 17, 2012
    Assignee: Xerox Corporation
    Inventors: Peter McCandlish, Xing Li, Ryan Metcalfe, Barbara Farrell
  • Publication number: 20100310170
    Abstract: Disclosed herein is a method for detecting thin lines in image data. The method is performed by a processor to process contone image data. The processing includes thresholding a window of pixels established in the contone domain to generate a binary window of image data, and then determining characteristics associated with on pixels or runs of the binary data. The characteristics (start and end locations, length of on runs) are then thresholded. The processing in the contone and binary domain are used to determine if a thin line exists in the window of image data. The disclosed method produces better quality output images and reduces the addition of false lines in an image.
    Type: Application
    Filed: June 8, 2009
    Publication date: December 9, 2010
    Applicant: XEROX CORPORATION
    Inventors: Xing Li, Ryan Metcalfe, Peter McCandlish, Barbara Farrell
  • Patent number: 7844118
    Abstract: Disclosed herein is a method for detecting thin lines in image data. The method is performed by a processor to process contone image data. The processing includes combining a first result of thin line detection using a first method and a second result of thin line detection using a second method to produce an improved thin line determination in the image data. The methods include processing and thresholding in the contone and binary domain to determine if a thin line exists in the window of image data. The thin line determination may also be merged with the image data as processed using other image segmentation techniques. The disclosed method produces better quality output images and reduces the addition of false lines in an image.
    Type: Grant
    Filed: July 1, 2009
    Date of Patent: November 30, 2010
    Assignee: Xerox Corporation
    Inventors: Xing Li, Barbara Farrell, Peter McCandlish, Ryan Metcalfe