Patents by Inventor Chengjun Li

Chengjun Li 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).

  • Publication number: 20140240311
    Abstract: Transitions between street view images are described. The described techniques include: obtaining an original street view image and a target street view image; constructing a three-dimensional model corresponding to the original street view image by three-dimensional modeling; obtaining matching pairs of feature points that are extracted from the original street view image and the target street view image, and simulating a virtual camera in the three-dimensional model according to matching pairs of feature points to capture street view image sequence; and switching from the original street view image to the target street view image according to the street view image sequence. Transition stability is thereby improved.
    Type: Application
    Filed: May 1, 2014
    Publication date: August 28, 2014
    Applicant: Tencent Technology (Shenzhen) Company Limited
    Inventors: Kun XU, Jianyu Wang, Baoli Li, Chengjun Li, Haozhi Huang
  • Publication number: 20130322764
    Abstract: Methods, devices, and systems for object identification are described herein. One or more method embodiments include converting data associated with an object on a geographical image or map into a number of primitives, fitting the number of primitives to a geometrical shape, and identifying the object based, at least in part, on the geometrical shape to which the number of primitives is fitted.
    Type: Application
    Filed: December 20, 2010
    Publication date: December 5, 2013
    Applicant: Honeywell International Inc.
    Inventors: Chengjun Li, Enyi Henry Chen, Jiangeng Du
  • Patent number: 8058989
    Abstract: The present invention discloses a method for obtaining the direction of a target location through a handset, which includes: the handset obtains geographical information of a current location and that of the target location, determines a geographical meridian line of the current location and a angle of this geographical meridian line displayed on the screen of the handset; the handset determines the direction from the current location to the target location according to geographical information of the current location and that of the target location, determines an included angle between this direction and the geographical meridian line. According to the included angle and that of the geographical meridian line displayed on its screen, the handset determines the direction displayed on the screen of the handset from the current location to the target location, and displays the direction of the target location on the screen according to the displayed direction.
    Type: Grant
    Filed: August 18, 2009
    Date of Patent: November 15, 2011
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Chengjun Li, Jilin Li, Zhengwei Wang
  • Publication number: 20110057929
    Abstract: A method and system of generating a 3D geometric object model for a domain. The method includes: extracting basic geometric elements from an input source; converting the basic geometric elements into domain elements according to a domain model, wherein the domain elements preserve semantic information of their attributes and relationships defined by the domain model; and constructing a 3D geometric model, including 3D geometric objects, from the domain elements by geometric operators according to the domain model, wherein the 3D geometric objects maintain the semantic information of the domain elements, and the semantic information is allowed to be defined in a level of the objects.
    Type: Application
    Filed: March 3, 2008
    Publication date: March 10, 2011
    Inventors: Henry Chen, Chengjun Li, tom Plocher, Conrad Bruce Beaulieu
  • Publication number: 20090303038
    Abstract: The present invention discloses a method for obtaining the direction of a target location through a handset, which includes: the handset obtains geographical information of a current location and that of the target location, determines a geographical meridian line of the current location and a angle of this geographical meridian line displayed on the screen of the handset; the handset determines the direction from the current location to the target location according to geographical information of the current location and that of the target location, determines an included angle between this direction and the geographical meridian line. According to the included angle and that of the geographical meridian line displayed on its screen, the handset determines the direction displayed on the screen of the handset from the current location to the target location, and displays the direction of the target location on the screen according to the displayed direction.
    Type: Application
    Filed: August 18, 2009
    Publication date: December 10, 2009
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Chengjun Li, Jilin Li, Zhengwei Wang
  • Patent number: 7595724
    Abstract: The present invention discloses a method for obtaining the direction of a target location through a handset, which includes: the handset obtains geographical information of a current location and that of the target location, determines a geographical meridian line of the current location and a angle of this geographical meridian line displayed on the screen of the handset; the handset determines the direction from the current location to the target location according to geographical information of the current location and that of the target location, determines an included angle between this direction and the geographical meridian line. According to the included angle and that of the geographical meridian line displayed on its screen, the handset determines the direction displayed on the screen of the handset from the current location to the target location, and displays the direction of the target location on the screen according to the displayed direction.
    Type: Grant
    Filed: July 12, 2006
    Date of Patent: September 29, 2009
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Chengjun Li, Jilin Li, Zhengwei Wang
  • Publication number: 20070008110
    Abstract: The present invention discloses a method for obtaining the direction of a target location through a handset, which includes: the handset obtains geographical information of a current location and that of the target location, determines a geographical meridian line of the current location and a angle of this geographical meridian line displayed on the screen of the handset; the handset determines the direction from the current location to the target location according to geographical information of the current location and that of the target location, determines an included angle between this direction and the geographical meridian line. According to the included angle and that of the geographical meridian line displayed on its screen, the handset determines the direction displayed on the screen of the handset from the current location to the target location, and displays the direction of the target location on the screen according to the displayed direction.
    Type: Application
    Filed: July 12, 2006
    Publication date: January 11, 2007
    Applicant: Huawei Technologies Co., Ltd.
    Inventors: Chengjun Li, Jilin Li, Zhengwei Wang
  • Publication number: 20050148297
    Abstract: The present invention relates to a method for providing real-time broadcast service in a mobile communication system, which is especially adapted to provide real-time broadcast service in the 3rd generation Code Division Multiple Access (CDMA) mobile communication system. The method comprises: adding a broadcast service hierarchy for specially providing real-time broadcast service in an radio access network having an original service hierarchy for providing voice communication; real-time broadcasting the real-time broadcast service which is accessed to the mobile communication network to mobile terminals via air interface of the mobile communication network through setting special broadcast resources, namely special carriers or special scrambling codes; the mobile terminal working in either of an original service hierarchy mode and a broadcasting service hierarchy mode which can be switched with each other.
    Type: Application
    Filed: January 21, 2003
    Publication date: July 7, 2005
    Inventors: Yifeng Lu, Chengjun Li, Hai Zeng, De Chen