Patents by Inventor Lixin Fan

Lixin Fan 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: 10491817
    Abstract: An apparatus comprising a processor and memory including computer program code, the memory and computer program code configured to, with the processor, enable the apparatus at least to: use received current-field-of-view indication data together with future-event-direction data, in respect of recorded panoramic video output provided by panoramic video content data, to provide a sensory cue for a viewer of the recorded panoramic video output to indicate the direction of a future event in the recorded panoramic video output which is outside a current field of view, wherein the recorded panoramic video output is configured to provide video content to the viewer which extends outside the field of view of the viewer in at least in one direction, and the future-event-direction data is supplemental to the panoramic video content data which provides the video content itself.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: November 26, 2019
    Assignee: Nokia Technologies Oy
    Inventors: Yu You, Lixin Fan
  • Patent number: 10465041
    Abstract: A method for preparing the modified polyester. The modified polyester segments include terephthalic acid segment, ethylene glycol diol segment and branched diol segment, in which the branched diol segment refers to a diol segment in which a branch is located on a non-terminal carbon in the glycol segment and the branch is a linear carbon chain having 5 to 10 carbon atoms. The method includes preparing terephthalic acid glycol ester through the esterification of terephthalic acid and branched diol using the concentrated sulfuric acid as the catalyst. Then get ethylene terephthalate through the esterification of terephthalic acid and ethylene glycol. After stirring and mixing the two, the modified polyester can be obtained through polycondensation reaction of a low vacuum stage and a high vacuum stage using the catalyst and stabilizer.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: November 5, 2019
    Assignee: JIANGSU HENGLI CHEMICAL FIBRE CO., LTD.
    Inventors: Hongwei Fan, Zhili Liu, Wengang Li, Fangming Tang, Lili Wang, Lixin Yin
  • Publication number: 20190311548
    Abstract: An apparatus configured to, in respect of first and second virtual reality content (207, 209) each configured to provide imagery for a respective first and second virtual reality space for viewing in virtual reality; and based on first-user-viewing-experience information defining an appearance of an object of interest (205) that appears in the first virtual reality content as viewed, in virtual reality, by a first user (201), and defining a time-variant point of view from which the first user (201) viewed the object of interest (205); providing for display to a second user (202), the second user provided with a virtual reality view of the second virtual reality content (203), of imagery of the object of interest (204) superimposed into the virtual reality space of the second virtual reality content (203) such that the second user (202) is able, while viewing the second virtual reality content, to witness the object of interest (204) as it was viewed by the first user (201).
    Type: Application
    Filed: June 12, 2017
    Publication date: October 10, 2019
    Applicant: Nokia Technologies Oy
    Inventors: Tinghuai Wang, Lixin Fan, Yu You
  • Publication number: 20190295266
    Abstract: A method comprising: providing a first 3D point cloud and a second 3D point cloud about an object obtained using different sensing techniques; removing a scale difference between the 3D point clouds based on a mean distance of points in corresponding subsets of the first and second 3D point clouds; arranging the 3D point clouds in a two-level structure, wherein a first level is a macro structure describing boundaries of the object and a second level is a micro structure consisting of supervoxels of the 3D point cloud; constructing a first graph from the first 3D point cloud and a second graph from the second 3D point cloud such that the supervoxels represent nodes of the graphs and adjacencies of the supervoxels represents edges of the graphs; matching the first and second graph for obtaining a transformation matrix; and registering the 3D point clouds together by applying the transformation matrix.
    Type: Application
    Filed: May 11, 2017
    Publication date: September 26, 2019
    Inventors: Lixin Fan, Xiaoshui Huang, Qiang Wu, Jian Zhang
  • Publication number: 20190278548
    Abstract: An image processing method. The method includes determining a first mapping relationship between first coordinates in a first coordinate system of a Multi-Resolution-Shading image and second coordinates in a second coordinate system of a Multi-Resolution-Shading screen image; and applying an anti-distortion process to the Multi-Resolution-Shading image based on the first mapping relationship, thereby obtaining an anti-distortion image.
    Type: Application
    Filed: November 26, 2018
    Publication date: September 12, 2019
    Applicants: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE Technology Group Co., Ltd.
    Inventors: Yukun Sun, Hao Zhang, Lili Chen, Jinghua Miao, Xuefeng Wang, Wenyu Li, Bin Zhao, Qiao Li, Lixin Wang, Jianwen Suo, Jinbao Peng, Qingwen Fan, Yali Liu, Yu Lei, Yakun Wang
  • Patent number: 10366304
    Abstract: A method comprising: obtaining a three-dimensional (3D) point cloud about an object; obtaining binary feature descriptors for feature points in a 2D image about the object; assigning a plurality of index values for each feature point as multiple bits of the corresponding binary feature descriptor; storing the binary feature descriptor in a table entry of a plurality of hash key tables of a database image; obtaining query binary feature descriptors for feature points in a query image; matching the query binary feature descriptors to the binary feature descriptors of the database image; reselecting one bit of the hash key of the matched database image; and re-indexing the feature points in the table entries of the hash key table of the database image.
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: July 30, 2019
    Assignee: NOKIA TECHNOLOGIES OY
    Inventors: Lixin Fan, Youji Feng, Yihong Wu
  • Publication number: 20190215557
    Abstract: A method comprising: enabling a first user to define a message for display to at least a second user in association with a first three-dimensional scene viewed by the first user and viewed by or viewable by the second user, wherein the message comprises user-defined message content for display and message metadata, not for display, defining first three-dimensional spatial information; and enabling rendering of the user-defined message content in a second three-dimensional scene viewed by the second user, wherein the user-defined message content moves, within the second three-dimensional scene, along a three-dimensional trajectory dependent upon the first three-dimensional spatial information and three-dimensional spatial information of the second user.
    Type: Application
    Filed: June 13, 2017
    Publication date: July 11, 2019
    Inventors: Yu You, Lixin Fan, Tinghuai Wang
  • Publication number: 20190213769
    Abstract: An apparatus configured to, in respect of virtual reality content comprising video imagery configured to provide a virtual reality space wherein a virtual reality view presented to a user provides for viewing of the VR space; based on a comment made by and a virtual location of a commenting-user in the virtual reality space when the comment was made; provide for determination of a point of interest in the virtual reality space, the point of interest identified based on, at least, the virtual location of the commenting-user when the comment was made and semantic analysis of the comment to identify the point of interest surrounding the virtual location to which the comment refers, the point of interest associated with the comment thereby enabling the comment to be overlaid over the virtual reality view of the video imagery.
    Type: Application
    Filed: August 15, 2017
    Publication date: July 11, 2019
    Applicant: NOKIA TECHNOLOGIES OY
    Inventors: Tinghuai WANG, Lixin FAN, Yu YOU
  • Publication number: 20190200078
    Abstract: An apparatus configured to, in respect of a video provided to a user and wherein a plurality of comments are displayed such that they scroll across the video, based on the comments and one or more comment filtering rules, provide for comment filtering as each of the plurality of comments scrolls to meet a filter line, wherein the filter line extends across at least part of the video to define a first area overlaying the video and a non-overlapping second area overlaying the video, such that in the first area the plurality of comments are provided for display scrolling therethrough towards the filter line prior to comment filtering and in the second area the plurality of comments are provided for display with any comments of the plurality of comments that satisfy the one or more comment filtering rules removed from display.
    Type: Application
    Filed: August 15, 2017
    Publication date: June 27, 2019
    Inventors: Sounak BHATTACHARYA, Lixin FAN, Yu YOU, Tinghuai WANG
  • Publication number: 20190169361
    Abstract: A method for preparing the modified polyester. The modified polyester segments include terephthalic acid segment, ethylene glycol diol segment and branched diol segment, in which the branched diol segment refers to a diol segment in which a branch is located on a non-terminal carbon in the glycol segment and the branch is a linear carbon chain having 5 to 10 carbon atoms. The method includes preparing terephthalic acid glycol ester through the esterification of terephthalic acid and branched diol using the concentrated sulfuric acid as the catalyst. Then get ethylene terephthalate through the esterification of terephthalic acid and ethylene glycol. After stirring and mixing the two, the modified polyester can be obtained through polycondensation reaction of a low vacuum stage and a high vacuum stage using the catalyst and stabilizer.
    Type: Application
    Filed: June 26, 2017
    Publication date: June 6, 2019
    Applicant: JIANGSU HENGLI CHEMICAL FIBRE CO., LTD.
    Inventors: Hongwei FAN, Zhili LIU, Wengang LI, Fangming TANG, Lili WANG, Lixin YIN
  • Publication number: 20190153621
    Abstract: A different shrinkage composite yarn and preparation method. The modified polyester is spun with a porous spinneret to produce a different shrinkage composite yarn, and the spinneret holes on the porous spinneret are arranged in an elliptical arrangement. The different shrinkage composite yarn is obtained by winding modified polyester POY yarn and FDY yarn, network recombining, and coiling them. The preparation method of modified polyester is as follows: terephthalic acid reacts with ethylene glycol to produce ethylene terephthalate. The modified polyester is obtained by the reaction of terephthalic acid with branched diol. The fiber of the invention has good properties and the deviation rate of fiber density. The CV value of breaking strength is ?4.0%, the CV value of elongation at break is ?8.0%, the CV value of coefficient of variation of coiling shrinkage is ?8.0%.
    Type: Application
    Filed: June 26, 2017
    Publication date: May 23, 2019
    Applicant: JIANGSU HENGLI CHEMICAL FIBRE CO., LTD.
    Inventors: Hongwei FAN, Guanfan JIN, Ming CHEN, Lixin YIN, Fangming TANG, Chaoming YANG
  • Patent number: 10217021
    Abstract: An augmented reality method for displaying information comprises: capturing a sequence of image frames by a camera of a portable device, obtaining movement data by using an inertial sensor of the portable device, determining a sampling frame rate according to the movement data, selecting a tracking image from the captured image frames according to the sampling frame rate, determining a position of the portable device by comparing the tracking image with a point cloud, and displaying information on a display of the device based on the determined position.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: February 26, 2019
    Assignee: Nokia Technologies Oy
    Inventors: Kimmo Roimela, Lixin Fan
  • Publication number: 20190012804
    Abstract: This specification describes a method comprising generating, from a plurality of first images representing a scene, at least one stereoscopic panoramic image comprising a left-eye panoramic image and a right-eye panoramic image. Depth map images are generated corresponding to each of the left and right-eye panoramic images. Each of the left and right-eye panoramic images are re-projected to obtain a plurality of second images, each associated with a respective virtual camera. Each of the left and right-eye depth map images are re-projected to generate a re-projected depth map associated with each second image. A first three-dimensional model of the scene based on the plurality of second images is determined. A second three-dimensional model of the scene based on the plurality of re-projected depth map images is determined. One or more corresponding points of the first and second three-dimensional models is or are compared to determine a scaling factor.
    Type: Application
    Filed: June 26, 2018
    Publication date: January 10, 2019
    Inventors: Tinghuai WANG, Yu YOU, Lixin FAN
  • Patent number: 10102675
    Abstract: The embodiments relate to a method and to technical equipment for implementing the method. The method includes receiving an image with location information from a client; requesting processed region data from a media server based on the location information, said processed region data including one or more images with the corresponding location information; applying a first process for determining a pose of a device for the received image by means of the processed region data; if the first process fails to result the pose of the device, applying a second process for determining a pose of a device for the received image by means of the processed region data; saving the image with the determined pose of the device to the media server; providing the image and the pose of the device to a client for client rendering.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: October 16, 2018
    Assignee: Nokia Technologies Oy
    Inventors: Lixin Fan, Ville-Veikko Mattila, Yu You, Kimmo Roimela, Junsheng Fu, Antti Eronen
  • Publication number: 20180293805
    Abstract: A method comprising performing image re-projection on each of a plurality of first images of a scene, thereby to generate a plurality of re-projected second images of the scene, wherein each first image of the scene is captured by a respective camera of a first multi-directional image capture apparatus and each second image of the scene is associated with a respective virtual camera; processing the plurality of second images based on a previously generated virtual three dimensional model of the scene, thereby to generate respective positions of the virtual cameras associated with the second images; and determining a position of the first multi-directional image capture apparatus based on one or more of the generated positions of the virtual cameras.
    Type: Application
    Filed: April 9, 2018
    Publication date: October 11, 2018
    Inventors: Tinghuai WANG, Yu YOU, Lixin FAN
  • Patent number: 10049492
    Abstract: A method comprising: obtaining a plurality of three-dimensional (3D) point clouds about a plurality of objects of interest, each of said 3D point clouds being labelled to a category of objects of interest; rendering facades for the objects of interests categorized as buildings using an ambient occlusion method, where illumination of the point cloud is calculated based on light coming from a theoretical hemisphere or sphere around the object of interest; and rendering shapes of the objects of interests categorized as non-buildings by fitting predefined templates of street view objects to the point clouds labelled as non-buildings.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: August 14, 2018
    Assignee: Nokia Technologies Oy
    Inventors: Pouria Babahajiani, Lixin Fan
  • Patent number: 9898486
    Abstract: The invention relates to a method and a system for image-based retrieval. The method comprises receiving a query image; processing the query image to obtain visual features; determining a feature from the obtained visual features; determining a viewing direction for the query image from a pre-determined set of viewing directions; generating a direction-based hash based on the determined feature in the query image and the viewing direction; identifying sub-volumes of a point cloud database that match the direction-based hash; and matching the identified sub-volumes against all the query image features to find a match.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: February 20, 2018
    Assignee: Nokia Technologies Oy
    Inventors: Kimmo Roimela, Lixin Fan
  • Publication number: 20180012105
    Abstract: A method comprising: obtaining a three-dimensional (3D) point cloud about an object; obtaining binary feature descriptors for feature points in a 2D image about the object; assigning a plurality of index values for each feature point as multiple bits of the corresponding binary feature descriptor; storing the binary feature descriptor in a table entry of a plurality of hash key tables of a database image; obtaining query binary feature descriptors for feature points in a query image; matching the query binary feature descriptors to the binary feature descriptors of the database image; reselecting one bit of the hash key of the matched database image; and re-indexing the feature points in the table entries of the hash key table of the database image.
    Type: Application
    Filed: January 27, 2015
    Publication date: January 11, 2018
    Inventors: Lixin Fan, Youji Feng, Yihong Wu
  • Patent number: 9846946
    Abstract: A method comprising: obtaining a three-dimensional (3D) point cloud about at least one object of interest; detecting ground and/or building objects from 3D point cloud data using an unsupervised segmentation method; removing the ground and/or building objects from the 3D point cloud data; and detecting one or more vertical objects from the remaining 3D point cloud data using a supervised segmentation method.
    Type: Grant
    Filed: November 21, 2015
    Date of Patent: December 19, 2017
    Assignee: Nokia Technologies Oy
    Inventors: Lixin Fan, Pouria Babahajiani
  • Publication number: 20170357873
    Abstract: An augmented reality method for displaying information comprises: capturing a sequence of image frames by a camera of a portable device, obtaining movement data by using an inertial sensor of the portable device, determining a sampling frame rate according to the movement data, selecting a tracking image from the captured image frames according to the sampling frame rate, determining a position of the portable device by comparing the tracking image with a point cloud, and displaying information on a display of the device based on the determined position.
    Type: Application
    Filed: December 3, 2015
    Publication date: December 14, 2017
    Applicant: Nokia Technologies Oy
    Inventors: Kimmo Roimela, Lixin Fan