Patents by Inventor Beng Hai Lee

Beng Hai Lee 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: 10325176
    Abstract: A method of assessing the quality of an retinal image (such as a fundus image) includes selecting at least one region of interest within a retinal image corresponding to a particular structure of the eye (e.g. the optic disc or the macula), and a quality score is calculated in respect of the, or each, region-of-interest. Each region of interest is typically one associated with pathology, as the optic disc and the macula are. Optionally, a quality score may be calculated also in respect of the eye as a whole (i.e. over the entire image, if the entire image corresponds to the retina).
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: June 18, 2019
    Assignee: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
    Inventors: Fengshou Yin, Wing Kee Damon Wong, Jiang Liu, Beng Hai Lee, Zhuo Zhang, Kavitha Gopalakrishnan, Ying Quan, Ai Ping Yow
  • Publication number: 20180181833
    Abstract: A method of assessing the quality of an retinal image (such as a fundus image) includes selecting at least one region of interest within a retinal image corresponding to a particular structure of the eye (e.g. the optic disc or the macula), and a quality score is calculated in respect of the, or each, region-of-interest. Each region of interest is typically one associated with pathology, as the optic disc and the macula are. Optionally, a quality score may be calculated also in respect of the eye as a whole (i.e. over the entire image, if the entire image corresponds to the retina).
    Type: Application
    Filed: August 25, 2015
    Publication date: June 28, 2018
    Inventors: Fengshou YIN, Wing Kee Damon WONG, Jiang LIU, Beng Hai LEE, Zhuo ZHANG, Kavitha GOPALAKRISHNAN, Ying QUAN, Al Ping YOW
  • Publication number: 20180104106
    Abstract: The present invention relates to a system for displaying a video image to a user having a visual impairment. The system comprises a video camera, a data storage device, a processor and an image display device for displaying processed images in a display region. The processor is operative to perform at least one of the operations of (i) including in the display region, a marker at a location offset from a centre of the display region, whereby if the user, who suffers from blurred vision at the centre of the user's visual field, looks at the marker, the user sees the captured image in focus; or (ii) deforming a portion of the captured image by a correction matrix, whereby, upon displaying the processed images by the display device, the correction matrix corrects a deformation in a corresponding portion of the visual field of the user due to the visual impairment.
    Type: Application
    Filed: May 12, 2016
    Publication date: April 19, 2018
    Inventors: Beng Hai LEE, Jiang LIU, Wing Kee Damon WONG, Ai Ping YOW, Tock Han LIM, Augustinus LAUDE
  • Patent number: 9786202
    Abstract: A surgical training system and method. The system comprises means for recording reference data representing a reference manipulation of a computer generated model of an object by a master user; means for physically guiding a trainee user based on the recorded reference data during a training manipulation of the model of the object by the trainee user; and means for recording assessment data representing an assessment manipulation of the model of the object by the trainee user without guidance.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: October 10, 2017
    Assignees: Agency for Science, Technology and Research, National University Hospital (S) Pte Ltd., National University of Singapore
    Inventors: Weimin Huang, Jiang Liu, Jiayin Zhou, Jing Zhang, Beng Hai Lee, Wing Kee Wong, Ngan Meng Tan, Zhuo Zhang, Fengshou Yin, Stephen Chang, Chee Kong Chui, Yi Su
  • 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
  • Patent number: 9501823
    Abstract: A method is proposed for analyzing an optical coherence tomography (OCT) image of the anterior segment (AS) of a subject's eye. A region of interest is defined which is a region of the image containing the junction of the cornea and iris, and an estimated position the junction within the region of interest is derived. Using this a second region of the image is obtained, which is a part of the image containing the estimated position of the junction. Features of the second region are obtained, and those features are input to an adaptive model to generate data characterizing the junction.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: November 22, 2016
    Assignees: Agency for Science, Technology and Research, Singapore Health Services Pte Ltd
    Inventors: Yanwu Xu, Jiang Liu, Wing Kee Damon Wong, Beng Hai Lee, Tin Aung, Baskaran Mani, Shamira Perera
  • Patent number: 9445716
    Abstract: A non-stereo fundus image is used to obtain a plurality of glaucoma indicators. Additionally, genome data for the subject is used to obtain genetic marker data relating to one or more genes and/or SNPs associated with glaucoma. The glaucoma indicators and genetic marker data are input into an adaptive model operative to generate an output indicative of a risk of glaucoma in the subject. In combination, the genetic indicators and genome data are more informative about the risk of glaucoma than either of the two in isolation. The adaptive model may be a two-stage model, having a first stage in which individual genetic indicators are combined with respective portions of the genome data by first adaptive model modules to form respective first outputs, and a second stage in which the first outputs are combined by a second adaptive mode.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: September 20, 2016
    Assignees: Agency for Science, Technology and Research, Singapore Health Services Pte Ltd
    Inventors: Jiang Liu, Zhuo Zhang, Wing Kee Damon Wong, Ngan Meng Tan, Fengshou Yin, Beng Hai Lee, Huiqi Li, Joo Hwee Lim, Carol Cheung, Tin Aung, Tien Yin Wong, Ziyang Liang, Jun Cheng, Baskaran Mani
  • Publication number: 20160100753
    Abstract: A non-stereo fundus image is used to obtain a plurality of glaucoma indicators. Additionally, genome data for the subject is used to obtain genetic marker data relating to one or more genes and/or SNPs associated with glaucoma. The glaucoma indicators and genetic marker data are input into an adaptive model operative to generate an output indicative of a risk of glaucoma in the subject. In combination, the genetic indicators and genome data are more informative about the risk of glaucoma than either of the two in isolation. The adaptive model may be a two-stage model, having a first stage in which individual genetic indicators are combined with respective portions of the genome data by first adaptive model modules to form respective first outputs, and a second stage in which the first outputs are combined by a second adaptive mode.
    Type: Application
    Filed: August 17, 2015
    Publication date: April 14, 2016
    Inventors: Jiang LIU, Zhuo ZHANG, Wing Kee Damon WONG, Ngan Meng TAN, Fengshou YIN, Beng Hai LEE, Huiqi LI, Joo Hwee LIM, Carol CHEUNG, Tin AUNG, Tien Yin WONG, Ziyang LIANG, Jun CHENG, Baskaran MANI
  • Patent number: 9107617
    Abstract: A non-stereo fundus image is used to obtain a plurality of glaucoma indicators. Additionally, genome data for the subject is used to obtain genetic marker data relating to one or more genes and/or SNPs associated with glaucoma. The glaucoma indicators and genetic marker data are input into an adaptive model operative to generate an output indicative of a risk of glaucoma in the subject. In combination, the genetic indicators and genome data are more informative about the risk of glaucoma than either of the two in isolation. The adaptive model may be a two-stage model, having a first stage in which individual genetic indicators are combined with respective portions of the genome data by first adaptive model modules to form respective first outputs, and a second stage in which the first outputs are combined by a second adaptive mode.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: August 18, 2015
    Assignees: Agency for Science, Technology and Research, Singapore Health Services Pte Ltd.
    Inventors: Jiang Liu, Zhuo Zhang, Wing Kee Damon Wong, Ngan Meng Tan, Fengshou Yin, Beng Hai Lee, Huiqi Li, Joo Hwee Lim, Carol Cheung, Tin Aung, Tien Yin Wong, Ziyang Liang, Jun Cheng, Baskaran Mani
  • 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: 20150161785
    Abstract: A method is proposed for analysing an optical coherence tomography (OCT) image of the anterior segment (AS) of a subject's eye. A region of interest is defined which is a region of the image containing the junction of the cornea and iris, and an estimated position the junction within the region of interest is derived. Using this a second region of the image is obtained, which is a part of the image containing the estimated position of the junction. Features of the second region are obtained, and those features are input to an adaptive model to generate data characterizing the junction.
    Type: Application
    Filed: August 1, 2013
    Publication date: June 11, 2015
    Applicant: SINGAPORE HEALTH SERVICES PTE LTD
    Inventors: Yanwu Xu, Jiang Liu, Wing Kee Damon Wong, Beng Hai Lee, Tin Aung, Baskaran Mani, Shamira Perera
  • 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: 8958621
    Abstract: An OCT image of an eye which has been subject to a DSAEK corneal transplant, in which a Descement's membrane in the cornea has been replaced by a graft, is processed to identify the outline of the graft. The process includes the steps of: computationally extracting the boundary of the cornea including the graft; computationally detecting the corners of the graft; computationally extracting points on the boundary between the graft and the original cornea; and computationally fitting the points on the boundary between the graft and the original cornea smoothly into a curve. The outline of the graft is then displayed. A graft profile may be generated, indicating the thickness of the graft at each point along its length.
    Type: Grant
    Filed: August 3, 2011
    Date of Patent: February 17, 2015
    Assignees: Agency for Science, Technology and Research, Singapore Health Services Pte Ltd.
    Inventors: Beng Hai Lee, Jun Cheng, Jiang Liu, Wing Kee Damon Wong, Ngan Meng Tan, Jodhbir Singh Mehta, Tiang Hwee Donald Tan, Tien Yin Wong
  • Patent number: 8764448
    Abstract: A robotic device for use in image-guided robot assisted surgical training, the robotic device comprising a manual interface structure configured to simulate handling of a surgical tool; a translational mechanism for translational motion of the manual interface structure; a rotational mechanism for rotational motion of the manual interface structure; and a spherical mechanism configured to decouple the orientation of the manual interface structure into spatial coordinates, wherein a linkage between the rotational mechanism, the rotational mechanism and the spherical mechanism, and the manual interface structure are disposed on opposing sides of an intersection of a pitch axis and a yaw axis of the spherical mechanism.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: July 1, 2014
    Assignees: Agency for Science, Technology and Research, National University Hospital (s) PTE Ltd, National University of Singapore
    Inventors: Tao Yang, Liangjing Yang, Jiang Liu, Chee Kong Chui, Weimin Huang, Jing Zhang, Jiayin Zhou, Beng Hai Lee, Ngan Meng Tan, Wing Kee Damon Wong, Fengshou Yin, Kin Yong Chang, Yi Su
  • Patent number: 8723949
    Abstract: A system and system for monitoring water quality. The system comprises a container for receiving a flow of water to be monitored, the container containing a plurality of fish and configured such that a substantially 3-dimensional group behavior of the fish is accommodated; a first imaging device disposed above the container for obtaining top view video data of the fish; and means for identifying individual fish based on foreground object detection.
    Type: Grant
    Filed: April 9, 2009
    Date of Patent: May 13, 2014
    Assignee: Agency for Science, Technology and Research
    Inventors: How Lung Eng, Beng Hai Lee, Suryanti Yunita Anggrelly, Boon Fong Chew
  • Publication number: 20130251230
    Abstract: An OCT image of an eye which has been subject to a DSAEK corneal transplant, in which a Descement's membrane in the cornea has been replaced by a graft, is processed to identify the outline of the graft. The process includes the steps of: computationally extracting the boundary of the cornea including the graft; computationally detecting the corners of the graft; computationally extracting points on the boundary between the graft and the original cornea; and computationally fitting the points on the boundary between the graft and the original cornea smoothly into a curve. The outline of the graft is then displayed. A graft profile may be generated, indicating the thickness of the graft at each point along its length.
    Type: Application
    Filed: August 3, 2011
    Publication date: September 26, 2013
    Inventors: Beng Hai Lee, Jun Cheng, Jiang Liu, Wing Kee Damon Wong, Ngan Meng Tan, Jodhbir Singh Mehta, Tiang Hwee Donald Tan, Tien Yin Wong
  • Publication number: 20130224710
    Abstract: A robotic device for use in image-guided robot assisted surgical training, the robotic device comprising a manual interface structure configured to simulate handling of a surgical tool; a translational mechanism for translational motion of the manual interface structure; a rotational mechanism for rotational motion of the manual interface structure; and a spherical mechanism configured to decouple the orientation of the manual interface structure into spatial coordinates, wherein a linkage between the rotational mechanism, the rotational mechanism and the spherical mechanism, and the manual interface structure are disposed on opposing sides of an intersection of a pitch axis and a yaw axis of the spherical mechanism.
    Type: Application
    Filed: September 1, 2011
    Publication date: August 29, 2013
    Applicants: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH, NATIONAL UNIVERSITY OF SINGAPORE, NATIONAL UNIVERSITY HOSPITAL (S) PTE LTD
    Inventors: Tao Yang, Liangjing Yang, Jiang Liu, Chee Kong Chui, Weimin Huang, Jing Zhang, Jiayin Zhou, Beng Hai Lee, Ngan Meng Tan, Wing Kee Damon Wong, Fengshou Yin, Kin Yong Chang, Yi Su
  • Publication number: 20130196300
    Abstract: A surgical training system and method. The system comprises means for recording reference data representing a reference manipulation of a computer generated model of an object by a master user; means for physically guiding a trainee user based on the recorded reference data during a training manipulation of the model of the object by the trainee user; and means for recording assessment data representing an assessment manipulation of the model of the object by the trainee user without guidance.
    Type: Application
    Filed: March 4, 2011
    Publication date: August 1, 2013
    Applicants: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH, NATIONAL UNIVERSITY HOSPITAL (S) PTE LTD, NATIONAL UNIVERSITY OF SINGAPORE
    Inventors: Weimin Huang, Jiang Liu, Jiayin Zhou, Jing Zhang, Beng Hai Lee, Wing Kee Wong, Ngan Meng Tan, Zhou Zhang, Fengshou Yin, Stephen Chang, Chee Kong Chui, Yi Su
  • Publication number: 20120230564
    Abstract: A non-stereo fundus image is used to obtain a plurality of glaucoma indicators. Additionally, genome data for the subject is used to obtain genetic marker data relating to one or more genes and/or SNPs associated with glaucoma. The glaucoma indicators indicators and genetic marker data are input into an adaptive model operative to generate an output indicative of a risk of glaucoma in the subject. In combination, the genetic indicators and genome data are more informative about the risk of glaucoma than either of the two in isolation. The adaptive model may be a two-stage model, having a first stage in which individual genetic indicators are combined with respective portions of the genome data by first adaptive model modules to form respective first outputs, and a second stage in which the first outputs are combined by a second adaptive mode.
    Type: Application
    Filed: November 16, 2010
    Publication date: September 13, 2012
    Inventors: Jiang Liu, Zhuo Zhang, Wing Kee Damon Wong, Ngan Meng Tan, Fengshou Yin, Beng Hai Lee, Huiqi Li, Joo Hwee Lim, Carol Cheung, Tin Aung, Tien Yin Wong, Ziyang Liang, Jun Cheng, Baskaran Mani
  • Publication number: 20120086802
    Abstract: A system and system for monitoring water quality. The system comprises a container for receiving a flow of water to be monitored, the container containing a plurality of fish and configured such that a substantially 3-dimensional group behaviour of the fish is accommodated; a first imaging device disposed above the container for obtaining top view video data of the fish; and means for identifying individual fish based on foreground object detection.
    Type: Application
    Filed: April 9, 2009
    Publication date: April 12, 2012
    Applicant: Agency for Science, Technology and Research
    Inventors: How Lung Eng, Beng Hai Lee, Suryanti Yunita Anggrelly, Boon Fong Chew