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).
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Patent number: 10047768Abstract: 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: GrantFiled: September 24, 2014Date of Patent: August 14, 2018Assignee: TAIYUAN UNIVERSITY OF TECHNOLOGYInventors: Long Quan, Youshan Gao, Huimin Hao, Jiahai Huang, Jing Yang
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Publication number: 20180023271Abstract: 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: ApplicationFiled: October 20, 2014Publication date: January 25, 2018Inventors: Long Quan, Huimin Hao, Jiahai Huang, Bing Wu, Xiaohong Han
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Publication number: 20160305455Abstract: 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: ApplicationFiled: September 24, 2014Publication date: October 20, 2016Inventors: Long Quan, Youshan Gao, Huimin Hao, Jiahai Huang, Jing Yang
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Patent number: 9129432Abstract: 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: GrantFiled: January 20, 2011Date of Patent: September 8, 2015Assignee: The Hong Kong University of Science and TechnologyInventors: Long Quan, Peng Zhao, Tian Fang, Honghui Zhang
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Patent number: 9098926Abstract: 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: GrantFiled: January 22, 2010Date of Patent: August 4, 2015Assignee: The Hong Kong University of Science and TechnologyInventors: Long Quan, Jianxiong Xiao, Tian Fang, Peng Zhao
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Patent number: 9036915Abstract: 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: GrantFiled: January 27, 2011Date of Patent: May 19, 2015Assignee: The Hong Kong University of Science and TechnologyInventors: Long Quan, Peng Zhao
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Patent number: 8798965Abstract: 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: GrantFiled: February 3, 2010Date of Patent: August 5, 2014Assignee: The Hong Kong University of Science and TechnologyInventors: Long Quan, Jianxiong Xiao, Tian Fang, Peng Zhao
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Patent number: 8750643Abstract: 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: GrantFiled: March 25, 2013Date of Patent: June 10, 2014Assignee: Microsoft CorporationInventors: Jian Sun, Heung-Yeung Shum, Lu Yuan, Long Quan
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Patent number: 8494285Abstract: 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: GrantFiled: December 9, 2011Date of Patent: July 23, 2013Assignee: The Hong Kong University of Science and TechnologyInventors: Honghui Zhang, Long Quan
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Patent number: 8406564Abstract: 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: GrantFiled: September 24, 2008Date of Patent: March 26, 2013Assignee: Microsoft CorporationInventors: Jian Sun, Heung-Yeung Shum, Lu Yuan, Long Quan
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Publication number: 20130011069Abstract: 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: ApplicationFiled: January 27, 2011Publication date: January 10, 2013Applicant: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Long Quan, Peng Zhao
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Publication number: 20120148162Abstract: 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: ApplicationFiled: December 9, 2011Publication date: June 14, 2012Applicant: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Honghui Zhang, Long Quan
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Publication number: 20120041722Abstract: 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: ApplicationFiled: February 3, 2010Publication date: February 16, 2012Applicant: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Long Quan, Jianxiong Xiao, Tian Fang, Peng Zhao
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Publication number: 20110289777Abstract: 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: ApplicationFiled: May 28, 2010Publication date: December 1, 2011Applicant: ROVCAL, INC.Inventors: Long Quan, Chan Wing Hong
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Publication number: 20110181589Abstract: 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: ApplicationFiled: January 20, 2011Publication date: July 28, 2011Applicant: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Long QUAN, Peng ZHAO, Tian FANG, Honghui ZHANG
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Publication number: 20100201682Abstract: 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: ApplicationFiled: January 22, 2010Publication date: August 12, 2010Applicant: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Long Quan, Jianxiong Xiao, Tian Fang, Peng Zhao
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Publication number: 20100074552Abstract: 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: ApplicationFiled: September 24, 2008Publication date: March 25, 2010Applicant: MICROSOFT CORPORATIONInventors: Jian Sun, Heung-Yeung Shum, Lu Yuan, Long Quan
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Publication number: 20010031081Abstract: The present invention aims at providing a mirror realized through novel digital image processing that is completely different from conventional mirrors.Type: ApplicationFiled: January 16, 2001Publication date: October 18, 2001Applicant: The One Infinite Inc.Inventors: Long Quan, Takeo Miyazawa, Hima Furuta