Patents by Inventor Xiangang Cheng

Xiangang Cheng 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: 9684959
    Abstract: A method is proposed for automatically locating the optic disc or the optic cup in an image of the rear of an eye. A portion of the image containing the optic disc or optic cup is divided into sub-regions using a clustering algorithm. Biologically inspired features, and optionally other features, are obtained for each of the sub-regions. An adaptive model uses the features to generate data indicative of whether each sub-region is within or outside the optic disc or optic cup. The result is then smoothed, to form an estimate of the position of the optic disc or optic cup.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: June 20, 2017
    Assignees: Agency for Science, Technology and Research, Singapore Health Services Pte Ltd
    Inventors: Jun Cheng, Jiang Liu, Yanwu Xu, Fengshou Yin, Ngan Meng Tan, Wing Kee Damon Wong, Beng Hai Lee, Xiangang Cheng, Xinting Gao, Zhuo Zhang, Tien Yin Wong, Ching-Yu Cheng, Yim-lui Carol Cheung, Baskaran Mani, Tin Aung
  • Publication number: 20150187070
    Abstract: A method is proposed for automatically locating the optic disc or the optic cup in an image of the rear of an eye. A portion of the image containing the optic disc or optic cup is divided into sub-regions using a clustering algorithm. Biologically inspired features, and optionally other features, are obtained for each of the sub-regions. An adaptive model uses the features to generate data indicative of whether each sub-region is within or outside the optic disc or optic cup. The result is then smoothed, to form an estimate of the position of the optic disc or optic cup.
    Type: Application
    Filed: August 26, 2013
    Publication date: July 2, 2015
    Inventors: Jun Cheng, Jiang Liu, Yanwu Xu, Fengshou Yin, Ngan Meng Tan, Wing Kee Damon Wong, Beng Hai Lee, Xiangang Cheng, Xinting Gao, Zhuo Zhang, Tien Yin Wong, Ching-Yu Cheng, Yim-lui Carol Cheung, Baskaran Mani, Tin Aung
  • Publication number: 20150125052
    Abstract: A method is proposed for automatically analysing a retina image, to identify the presence of drusen which is indicative of age-related macular degeneration. The method proposes dividing a region of interest including the macula centre into patches, obtaining a local descriptor of each of the patches, reducing the dimensionality of the local descriptor by comparing the local descriptor to a tree-like clustering model and obtaining transformed data indicating the identity of the cluster. The transformed data is fed into an adaptive model which generates data indicative of the presence of drusen in the retinal image. Furthermore, the trans formed data can be used to obtain the location of the drusen within the image.
    Type: Application
    Filed: June 5, 2013
    Publication date: May 7, 2015
    Inventors: Wing Kee Damon Wong, Xiangang Cheng, Jiang Liu, Ngan Meng Tan, Beng Hai Lee, Fengshou Yin, Mayuri Bhargava, Gemmy Cheung, Tien Yin Wong
  • Patent number: 8219784
    Abstract: A computer-implemented method and apparatus for managing an out of order dispatched instruction queue in a microprocessor. In one embodiment, the method and apparatus include assigning a group identification number and a target identification number to an instruction in an instruction stream. The group identification number and the target identification number are labeled inside an instruction fetcher unit. The group identification number and the target identification number are pre-decoded. The instruction is sent to an instruction queue. The instruction is re-ordered in the instruction stream after executing the instruction utilizing information from the pre-decoding of the group identification number and the target identification number.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: July 10, 2012
    Assignee: International Business Machines Corporation
    Inventors: Oliver Keren Ban, Xiangang Cheng, Liang Huang Lee, Katherine June Pearsall
  • Patent number: 8028124
    Abstract: The illustrative embodiments described herein provide a computer implemented method, apparatus, and computer program product for increasing efficiency associated with data access. In one illustrative embodiment a memory chip is presented comprising of a plurality of memory units for storing data; a plurality of processing units for processing the data; and a word line and a bit line external to the plurality of memory units, wherein the plurality of processing units directly access the word line and the bit line in accessing the data.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: September 27, 2011
    Assignee: International Business Machines Corporation
    Inventors: Oliver Keren Ban, Xiangang Cheng, Eric James St. Amand
  • Publication number: 20100146247
    Abstract: A computer-implemented method and apparatus for managing an out of order dispatched instruction queue in a microprocessor. In one embodiment, the method and apparatus include assigning a group identification number and a target identification number to an instruction in an instruction stream. The group identification number and the target identification number are labeled after a pre-decoding stage inside an instruction fetcher unit. The group identification number and the target identification number are pre-decoded. The instruction is sent to an instruction queue. The instruction is re-ordered in the instruction stream after executing the instruction utilizing information from the pre-decoding of the group identification number and the target identification number.
    Type: Application
    Filed: December 9, 2008
    Publication date: June 10, 2010
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Oliver Keren Ban, Xiangang Cheng, Liang Huang Lee, Katherine June Pearsall