Patents by Inventor Long Quan

Long Quan 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: 10047768
    Abstract: A double-loop control system with a single hydraulic motor relates to a technical field of hydraulic transmission control, including a hydraulic motor (1), a positive control loop (2), a negative control loop (3), a hydraulic pump (4), an accumulator (5), and an oil tank, wherein the hydraulic motor (1) adopts a unique thrust structure with four inlet/outlet ports; the positive control loop (2) and the negative control loop (3) independently control the hydraulic motor (1), wherein the positive control loop (2) and the negative control loop (3) drive together or only one drives; or braking kinetic energy and potential energy of loads are stored in the accumulator (5) for energy recovery. The present invention uses only one hydraulic motor for satisfying different work conditions and different load driving requirements with advantages such as simple structure, high system reliability and high energy efficiency.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: August 14, 2018
    Assignee: TAIYUAN UNIVERSITY OF TECHNOLOGY
    Inventors: Long Quan, Youshan Gao, Huimin Hao, Jiahai Huang, Jing Yang
  • Publication number: 20180023271
    Abstract: A variable-speed volume-control direct-drive all-electric hydraulic excavator drive and energy recover system the control drive circuit of which includes the A, B, C energy source, boom cylinder control valve group, arm cylinder control valve group, bucket control valve, swing control valve, swing motor control valve group, left travel control valve, right travel control valve, eight 2-position 2-way valve, I and II 2-position 3-way valve, I and II accumulator. The drive control circuit adopts open control independent-cavity variable-speed pump-control volume direct-drive circuit. Each of the cavities of cylinder is controlled by an energy source and the pressure and flow rate of the cavities are adjusted by the rotational speed and torque control of the generator independently. The present invention is four-quadrant running and have advantages of high efficiency, high integrity, low consumption, redundancy energy source, no need for pilot supply, low noise, integrate recovery of kinetic and potential energy.
    Type: Application
    Filed: October 20, 2014
    Publication date: January 25, 2018
    Inventors: Long Quan, Huimin Hao, Jiahai Huang, Bing Wu, Xiaohong Han
  • Publication number: 20160305455
    Abstract: A double-loop control system with a single hydraulic motor relates to a technical field of hydraulic transmission control, including a hydraulic motor (1), a positive control loop (2), a negative control loop (3), a hydraulic pump (4), an accumulator (5), and an oil tank, wherein the hydraulic motor (1) adopts a unique thrust structure with four inlet/outlet ports; the positive control loop (2) and the negative control loop (3) independently control the hydraulic motor (1), wherein the positive control loop (2) and the negative control loop (3) drive together or only one drives; or braking kinetic energy and potential energy of loads are stored in the accumulator (5) for energy recovery. The present invention uses only one hydraulic motor for satisfying different work conditions and different load driving requirements with advantages such as simple structure, high system reliability and high energy efficiency.
    Type: Application
    Filed: September 24, 2014
    Publication date: October 20, 2016
    Inventors: Long Quan, Youshan Gao, Huimin Hao, Jiahai Huang, Jing Yang
  • Patent number: 9129432
    Abstract: Systems and methods are provided to facilitate architectural modeling. In one aspect, a modeling system is provided. This includes a processor configured to generate remodeled images associated with one or more architectural structures. A procedural model is configured to integrate an approximate model from aerial images of the architectural structures and a three-dimensional (3D) reconstruction model from ground-level images of the architectural structures.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: September 8, 2015
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Long Quan, Peng Zhao, Tian Fang, Honghui Zhang
  • Patent number: 9098926
    Abstract: The subject disclosure relates to generating three-dimensional façade models from images. In one aspect, a systematic decomposition schema is disclosed for a façade structured into a Direct Acyclic Graph and implemented as a top-down recursive subdivision and bottom-up merging. In a further aspect, optimization of façade depth operating in a façade surface and in the super-pixel level of a whole subdivision region is described.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: August 4, 2015
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Long Quan, Jianxiong Xiao, Tian Fang, Peng Zhao
  • Patent number: 9036915
    Abstract: Systems and methods are provided to facilitate architectural modeling. In one aspect, repetitive patterns are automatically detected and analyzed to generate modeled structural images such as building facades. In another aspect, structural symmetry is analyzed to facilitate architectural modeling and enhanced image generation.
    Type: Grant
    Filed: January 27, 2011
    Date of Patent: May 19, 2015
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Long Quan, Peng Zhao
  • Patent number: 8798965
    Abstract: The subject disclosure relates to generating models from images. In an aspect, multi-view semantic segmentation is provided to recognize and segment images at the pixel level into semantically meaningful areas, and which can provide labels with a specific object class. In further aspects, a partition scheme is provided that can separate objects into independent blocks using major line structures of a scene. In addition, an inverse patch-based orthographic composition and structure analysis on a block is provided that can regularize noisy and missing reconstructed 3D data to facilitate image-based modeling.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: August 5, 2014
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Long Quan, Jianxiong Xiao, Tian Fang, Peng Zhao
  • Patent number: 8750643
    Abstract: Embodiments related to the removal of blur from an image are disclosed. One disclosed embodiment provides a method of performing an iterative non-blind deconvolution of a blurred image to form an updated image. The method comprises downsampling the blurred image to form a blurred image pyramid comprising images of two or more different resolution scales, downsampling a blur kernel to form a blur kernel pyramid comprising kernels of two or more different sizes, and deconvoluting a selected image in the blurred image pyramid according to a Richardson-Lucy deconvolution process in which a bilateral range/spatial filter is employed.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: June 10, 2014
    Assignee: Microsoft Corporation
    Inventors: Jian Sun, Heung-Yeung Shum, Lu Yuan, Long Quan
  • Patent number: 8494285
    Abstract: Systems, methods, and apparatus are described that that increase computer vision analysis in the field of semantic segmentation. With images accompanied by scan data, both two-dimensional and three-dimensional image information is employed for joint segmentation. Through the established correspondence between image data and scan data, two-dimensional and three-dimensional information respectively associated therewith is integrated. Using trained random forest classifiers, the probability of each pixel in images belonging to different object classes is predicted. With the predicted probability, optimization of the labeling of images and scan data is performed by integrating multiples cues in the markov random field.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: July 23, 2013
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Honghui Zhang, Long Quan
  • Patent number: 8406564
    Abstract: Embodiments related to the removal of blur from an image are disclosed. One disclosed embodiment provides a method of performing an iterative non-blind deconvolution of a blurred image to form an updated image. The method comprises downsampling the blurred image to form a blurred image pyramid comprising images of two or more different resolution scales, downsampling a blur kernel to form a blur kernel pyramid comprising kernels of two or more different sizes, and deconvoluting a selected image in the blurred image pyramid according to a Richardson-Lucy deconvolution process in which a bilateral range/spatial filter is employed.
    Type: Grant
    Filed: September 24, 2008
    Date of Patent: March 26, 2013
    Assignee: Microsoft Corporation
    Inventors: Jian Sun, Heung-Yeung Shum, Lu Yuan, Long Quan
  • Publication number: 20130011069
    Abstract: Systems and methods are provided to facilitate architectural modeling. In one aspect, repetitive patterns are automatically detected and analyzed to generate modeled structural images such as building facades. In another aspect, structural symmetry is analyzed to facilitate architectural modeling and enhanced image generation.
    Type: Application
    Filed: January 27, 2011
    Publication date: January 10, 2013
    Applicant: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Long Quan, Peng Zhao
  • Publication number: 20120148162
    Abstract: Systems, methods, and apparatus are described that that increase computer vision analysis in the field of semantic segmentation. With images accompanied by scan data, both two-dimensional and three-dimensional image information is employed for joint segmentation. Through the established correspondence between image data and scan data, two-dimensional and three-dimensional information respectively associated therewith is integrated. Using trained random forest classifiers, the probability of each pixel in images belonging to different object classes is predicted. With the predicted probability, optimization of the labeling of images and scan data is performed by integrating multiples cues in the markov random field.
    Type: Application
    Filed: December 9, 2011
    Publication date: June 14, 2012
    Applicant: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Honghui Zhang, Long Quan
  • Publication number: 20120041722
    Abstract: The subject disclosure relates to generating models from images. In an aspect, multi-view semantic segmentation is provided to recognize and segment images at the pixel level into semantically meaningful areas, and which can provide labels with a specific object class. In further aspects, a partition scheme is provided that can separate objects into independent blocks using major line structures of a scene. In addition, an inverse patch-based orthographic composition and structure analysis on a block is provided that can regularize noisy and missing reconstructed 3D data to facilitate image-based modeling.
    Type: Application
    Filed: February 3, 2010
    Publication date: February 16, 2012
    Applicant: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Long Quan, Jianxiong Xiao, Tian Fang, Peng Zhao
  • Publication number: 20110289777
    Abstract: A blade head assembly for a hand-held hair cutting appliance includes a blade clamping device urging a cutting edge margin of a second blade in sliding engagement with a cutting edge margin of a first blade. The blade clamping device includes a clamping head operable for pivoting generally toward and generally away from the second blade about a pivot axis. The clamping head is resiliently biased generally toward the second cutting blade about the pivot axis into sliding engagement with the second blade. The second blade is slidable relative to the clamping head during reciprocating movement of the second blade relative to the first blade.
    Type: Application
    Filed: May 28, 2010
    Publication date: December 1, 2011
    Applicant: ROVCAL, INC.
    Inventors: Long Quan, Chan Wing Hong
  • Publication number: 20110181589
    Abstract: Systems and methods are provided to facilitate architectural modeling. In one aspect, a modeling system is provided. This includes a processor configured to generate remodeled images associated with one or more architectural structures. A procedural model is configured to integrate an approximate model from aerial images of the architectural structures and a three-dimensional (3D) reconstruction model from ground-level images of the architectural structures.
    Type: Application
    Filed: January 20, 2011
    Publication date: July 28, 2011
    Applicant: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Long QUAN, Peng ZHAO, Tian FANG, Honghui ZHANG
  • Publication number: 20100201682
    Abstract: The subject disclosure relates to generating three-dimensional façade models from images. In one aspect, a systematic decomposition schema is disclosed for a façade structured into a Direct Acyclic Graph and implemented as a top-down recursive subdivision and bottom-up merging. In a further aspect, optimization of façade depth operating in a façade surface and in the super-pixel level of a whole subdivision region is described.
    Type: Application
    Filed: January 22, 2010
    Publication date: August 12, 2010
    Applicant: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Long Quan, Jianxiong Xiao, Tian Fang, Peng Zhao
  • Publication number: 20100074552
    Abstract: Embodiments related to the removal of blur from an image are disclosed. One disclosed embodiment provides a method of performing an iterative non-blind deconvolution of a blurred image to form an updated image. The method comprises downsampling the blurred image to form a blurred image pyramid comprising images of two or more different resolution scales, downsampling a blur kernel to form a blur kernel pyramid comprising kernels of two or more different sizes, and deconvoluting a selected image in the blurred image pyramid according to a Richardson-Lucy deconvolution process in which a bilateral range/spatial filter is employed.
    Type: Application
    Filed: September 24, 2008
    Publication date: March 25, 2010
    Applicant: MICROSOFT CORPORATION
    Inventors: Jian Sun, Heung-Yeung Shum, Lu Yuan, Long Quan
  • Publication number: 20010031081
    Abstract: The present invention aims at providing a mirror realized through novel digital image processing that is completely different from conventional mirrors.
    Type: Application
    Filed: January 16, 2001
    Publication date: October 18, 2001
    Applicant: The One Infinite Inc.
    Inventors: Long Quan, Takeo Miyazawa, Hima Furuta