Patents by Inventor WeiWei FENG

WeiWei FENG 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: 11979606
    Abstract: Methods and apparatuses of encoding a video stream using video point cloud coding include obtaining a source point cloud; generating a geometry map and a texture map based on the source point cloud; generating a reconstructed geometry map and a reconstructed texture map using lossy coding without using recoloring, wherein a resolution of the reconstructed geometry map is same as a resolution of the reconstructed texture map; obtaining a point of the source point cloud corresponding to a geometry pixel of the geometry map and a texture pixel of the texture map; selecting a color of the texture pixel based on a color of the obtained point; and generating an encoded video stream based on the selected color, the geometry map, and the texture map.
    Type: Grant
    Filed: October 6, 2021
    Date of Patent: May 7, 2024
    Assignee: TENCENT AMERICA LLC
    Inventors: Xiang Zhang, Wen Gao, Shan Liu, Weiwei Feng, Bing Jian
  • Publication number: 20240050601
    Abstract: The present disclosure is related to compositions and processes of preparation of a radiotherapeutic hydrogel that includes anionic cytotoxic radioactive agents, cationic biopolymer or the cationic biopolymer-based NP/MP, and biopolymer hydrogel. In some embodiments, the radiotherapeutic hydrogel can be potentially applied as a new approach of SIRT as adjuvant treatment (e.g., via a local administration) to selectively kill the residual cancers.
    Type: Application
    Filed: December 28, 2021
    Publication date: February 15, 2024
    Inventor: Weiwei Feng
  • Publication number: 20230405141
    Abstract: Provided is an antibody drug conjugate, specifically comprising a therapeutic antibody moiety, an intermediate linker moiety and a cytotoxic drug moiety which are linked. The therapeutic antibody moiety is an antibody against an HER2 target. The cytotoxic drug moiety is a camptothecin topoisomerase I inhibitor. The cytotoxic drug moiety or the linker-cytotoxic drug moiety is modified by means of deuterium substitution. The antibody drug conjugate can be used for the prevention or treatment of cancers.
    Type: Application
    Filed: August 13, 2021
    Publication date: December 21, 2023
    Inventors: Xiquan ZHANG, Tianxi CHEN, Weiwei FENG, Bing ZHANG, Xiaoqi TANG, Tongjie XU, Xiaojin WANG, Huace SHENG, Zhengping ZHANG, Hua WANG, Yong GAO
  • Patent number: 11843802
    Abstract: A method, computer program, and computer system is provided for coding video data. Video data including a reference view and a current view is received. A co-located block in the reference view is identified for a current block in the current view. A predicted block vector is calculated based on an offset vector between the current block and the co-located block, and a disparity vector between the co-located block and the reference block in the reference view. The video data is encoded/decoded based on the calculated predicted block vector.
    Type: Grant
    Filed: August 23, 2021
    Date of Patent: December 12, 2023
    Assignee: TENCENT AMERICA LLC
    Inventors: Jun Tian, Shan Liu, Xiaozhong Xu, Weiwei Feng, Wen Gao
  • Publication number: 20230323218
    Abstract: A catalyst for residue suspended bed hydrocracking and a preparation method and application thereof are disclosed. The catalyst is obtained by mixing a VIM or VIIIB group transition metal salt solution with a ferric salt solution, conducting parallel-flow precipitation with an alkaline solution, adding a silicon source, and then conducting aging, washing, drying, and calcination. The catalyst has a stable structure and excellent hydrogenation activity. When used in a residue suspended bed hydrocracking reaction, the yield of liquid is up to 91 wt %, the yield of gasoline and diesel oil is up to 60 wt %, and both the yield of gas and the yield of coke are low. The catalyst has a good application prospect in residue suspended bed hydroconversion process.
    Type: Application
    Filed: February 27, 2023
    Publication date: October 12, 2023
    Applicants: Fuzhou University, Qingyuan Innovation Laboratory
    Inventors: Qingyan CUI, Weiwei FENG, Xiaojun BAO, Tinghai WANG, Pei YUAN
  • Publication number: 20230281921
    Abstract: A method for 3D human model reconstruction and animation includes receiving a two-dimensional (2D) image of a human, segmenting the 2D image into a foreground with the human and a background without the human in the 2D image, generating a parametric model comprising a pose, a shape, and one or more rigging parameters based on the human in the foreground, predicting a textured three-dimensional (3D) model using implicit surface reconstruction of the human in the foreground, aligning the parametric model and the textured 3D model using a 3D registration, and generating a textured 3D clothed human model based on the aligned parametric model and the predicted textured 3D model.
    Type: Application
    Filed: November 8, 2022
    Publication date: September 7, 2023
    Applicant: TENCENT AMERICA LLC
    Inventors: Dan MIAO, Bing JIAN, Weiwei FENG, Shan LIU, Ye WANG
  • Publication number: 20230245390
    Abstract: A plurality of two-dimensional (2D) images of the scene is received. Geometric information and semantic information of each of the plurality of 2D images is determined. The geometric information indicates a detected line and a reference direction in the respective 2D image. The semantic information includes classification information of pixels in the respective 2D image. A layout estimation associated with the respective 2D image of the scene is determined based on the geometric information and the semantic information of the respective 2D image. A combined layout estimation associated with the scene is determined based on a plurality of the determined layout estimations associated with the plurality of 2D images of the scene. The Manhattan layout associated with the scene is generated based on the combined layout estimation. The Manhattan layout includes at least a three-dimensional (3D) shape of the scene that includes wall faces orthogonal with respect to each other.
    Type: Application
    Filed: November 4, 2022
    Publication date: August 3, 2023
    Applicant: Tencent America LLC
    Inventors: Haichao ZHU, Bing JIAN, Weiwei FENG, Lu HE, Kelin LIU, Shan LIU
  • Publication number: 20230174528
    Abstract: A crystal of a trifluoromethyl/chloro disubstituted sulfonamide selective BCL-2 inhibitor, specifically related to a crystal of a compound of formula I, a preparation method therefor, and use thereof in preventing and treating diseases related to anti-apoptotic protein BCL-2, such as cancers.
    Type: Application
    Filed: April 29, 2021
    Publication date: June 8, 2023
    Applicant: CHIA TAI TIANQING PHARMACEUTICAL GROUP CO., LTD.
    Inventors: Weiwei FENG, Yanlong LIU, Huihui ZHANG, Fei LIU, Bin WANG, Yiyan YAO, Zhilin CHEN, Jinlei ZHU, Chenghui LU
  • Patent number: 11670045
    Abstract: Aspects of the disclosure include methods, apparatuses, and non-transitory computer-readable storage mediums for generating a three-dimensional (3D) geometry of a room from a panorama image of the room. An apparatus includes processing circuitry that determine two-dimensional (2D) positions of wall corner points of the room in the panorama image based on a user input. Each wall corner point is in one of a floor plane or a ceiling plane of the room. The processing circuitry calculates 3D positions of the wall corner points based on the 2D positions of the wall corner points, a size of the panorama image, and a distance between the floor plane and a capture position of a device capturing the panorama image, determines a room layout based on an order of the wall corner points, and generates the 3D geometry based on the room layout and the 3D positions of the wall corner points.
    Type: Grant
    Filed: October 15, 2021
    Date of Patent: June 6, 2023
    Assignee: TENCENT AMERICA LLC
    Inventors: Xiang Zhang, Bing Jian, Lu He, Haichao Zhu, Shan Liu, Kelin Liu, Weiwei Feng
  • Patent number: 11651533
    Abstract: Aspects of the disclosure include methods, apparatuses, and non-transitory computer-readable storage mediums for generating a floor plan from a point cloud model. An apparatus includes processing circuitry that receives an input three-dimensional point cloud corresponding to a three-dimensional space. The processing circuitry determines a plurality of wall planes in the received input three-dimensional point cloud. The processing circuitry generates a plurality of line segments. Each line segment is generated by projecting a respective wall plane of the plurality of wall planes to a floor plane in the three-dimensional space. The processing circuitry represents the plurality of wall planes in the three-dimensional space using the plurality of line segments in a two-dimensional space corresponding to the floor plan. The processing circuitry adjusts the plurality of line segments in the two-dimensional space to improve the floor plan.
    Type: Grant
    Filed: October 15, 2021
    Date of Patent: May 16, 2023
    Assignee: TENCENT AMERICA LLC
    Inventors: Xiang Zhang, Bing Jian, Lu He, Haichao Zhu, Shan Liu, Kelin Liu, Weiwei Feng
  • Publication number: 20220394295
    Abstract: Methods and apparatuses of encoding a video stream using video point cloud coding include obtaining a source point cloud; obtaining a geometry-reconstructed point cloud, wherein the geometry-reconstructed point cloud is reconstructed using lossy coding; obtaining a target point included in the geometry-reconstructed point cloud; performing at least one of a forward K-dimensional (KD)-tree search to determine a first plurality of points of the source point cloud which are nearest neighbors to the target point, and a backward KD-tree search to determine a second plurality of points of the source point cloud for which the target point is a nearest neighbor; determining an average color value based on at least one of a first average color value of the first plurality of points and a second average color value of the second plurality of points; selecting a color value for the target point based on the average color value; and generating an encoded video stream based on the selected color value.
    Type: Application
    Filed: October 13, 2021
    Publication date: December 8, 2022
    Applicant: TENCENT AMERICA LLC
    Inventors: Xiang Zhang, Wen Gao, Shan Liu, Weiwei Feng, Bing Jian
  • Publication number: 20220394293
    Abstract: Methods and apparatuses of encoding a video stream using video point cloud coding include obtaining a source point cloud; generating a geometry map and a texture map based on the source point cloud; generating a reconstructed geometry map and a reconstructed texture map using lossy coding without using recoloring, wherein a resolution of the reconstructed geometry map is same as a resolution of the reconstructed texture map; obtaining a point of the source point cloud corresponding to a geometry pixel of the geometry map and a texture pixel of the texture map; selecting a color of the texture pixel based on a color of the obtained point; and generating an encoded video stream based on the selected color, the geometry map, and the texture map.
    Type: Application
    Filed: October 6, 2021
    Publication date: December 8, 2022
    Applicant: TENCENT AMERICA LLC
    Inventors: Xiang Zhang, Wen Gao, Shan Liu, Weiwei Feng, Bing Jian
  • Publication number: 20220394294
    Abstract: Methods and apparatuses of encoding a video stream encoded using video point cloud coding include obtaining a source point cloud; generating an occupancy map including one or more pixels based on the source point cloud, an occupancy value associated with each pixel being a non-binary value; encoding the occupancy map to generate an encoded occupancy map, wherein a block of the encoded occupancy map corresponds to the one or more pixels of the occupancy map; selecting an occupancy value of the block based on the one or more pixels; and generating an encoded video stream based on the selected occupancy value.
    Type: Application
    Filed: October 7, 2021
    Publication date: December 8, 2022
    Applicant: TENCENT AMERICA LLC
    Inventors: Xiang ZHANG, Weiwei Feng, Wen Gao, Shan Liu, Bing Jian
  • Publication number: 20220358694
    Abstract: Aspects of the disclosure include methods, apparatuses, and non-transitory computer-readable storage mediums for generating a floor plan from a point cloud model. An apparatus includes processing circuitry that receives an input three-dimensional point cloud corresponding to a three-dimensional space. The processing circuitry determines a plurality of wall planes in the received input three-dimensional point cloud. The processing circuitry generates a plurality of line segments. Each line segment is generated by projecting a respective wall plane of the plurality of wall planes to a floor plane in the three-dimensional space. The processing circuitry represents the plurality of wall planes in the three-dimensional space using the plurality of line segments in a two-dimensional space corresponding to the floor plan. The processing circuitry adjusts the plurality of line segments in the two-dimensional space to improve the floor plan.
    Type: Application
    Filed: October 15, 2021
    Publication date: November 10, 2022
    Applicant: TENCENT AMERICA LLC
    Inventors: Xiang ZHANG, Bing JIAN, Lu HE, Haichao ZHU, Shan LIU, Kelin LIU, Weiwei FENG
  • Publication number: 20220358671
    Abstract: A method, computer program, and computer system is provided for 3D pose graph reconstruction. 3D reconstruction of indoor buildings for VR/AR applications, such as virtual touring, digital museum, and virtual home sale, may be performed based on estimating pose graph and transformation matrix between cameras by recognizing markers on the ground in panorama images. Image data corresponding to one or more views of a first camera is received. One or more markers corresponding to a second camera are identified within the received image data. A pose graph corresponding to the one or more views of the first camera is constructed based on the identified one or more markers, the pose graph comprising at least an edge.
    Type: Application
    Filed: October 8, 2021
    Publication date: November 10, 2022
    Applicant: TENCENT AMERICA LLC
    Inventors: Xiang ZHANG, Bing JIAN, Lu HE, Haichao ZHU, Shan LIU, Kelin LIU, Weiwei FENG
  • Publication number: 20220358716
    Abstract: Aspects of the disclosure include methods, apparatuses, and non-transitory computer-readable storage mediums for generating a three-dimensional (3D) geometry of a room from a panorama image of the room. An apparatus includes processing circuitry that determine two-dimensional (2D) positions of wall corner points of the room in the panorama image based on a user input. Each wall corner point is in one of a floor plane or a ceiling plane of the room. The processing circuitry calculates 3D positions of the wall corner points based on the 2D positions of the wall corner points, a size of the panorama image, and a distance between the floor plane and a capture position of a device capturing the panorama image, determines a room layout based on an order of the wall corner points, and generates the 3D geometry based on the room layout and the 3D positions of the wall corner points.
    Type: Application
    Filed: October 15, 2021
    Publication date: November 10, 2022
    Applicant: TENCENT AMERICA LLC
    Inventors: Xiang ZHANG, Bing Jian, Lu He, Haichao Zhu, Shan Liu, Kelin Liu, Weiwei Feng
  • Patent number: 11418810
    Abstract: A method, computer program, and computer system is provided for coding video data. Video data including (1) a first frame comprising a first current view and a first reference view and (2) a second frame comprising a second current view and a second reference view is received. A co-located block in the first reference view is identified for a current block in the first current view. A predicted offset vector is calculated based on the motion vector between the co-located block and its reference block in the second reference view. The video data is encoded/decoded based on the predicted offset vector.
    Type: Grant
    Filed: September 21, 2020
    Date of Patent: August 16, 2022
    Assignee: TENCENT AMERICA LLC
    Inventors: Jun Tian, Shan Liu, Xiaozhong Xu, Weiwei Feng
  • Publication number: 20220220110
    Abstract: Disclosed is a methyl- and trifluoromethyl-containing disubstituted sulfonamide selective BCL-2 inhibitor; specifically disclosed are a compound of formula I, a stereoisomer or pharmaceutically acceptable salt of same, a preparation method therefor, and a pharmaceutical composition comprising the compound. Also disclosed are uses of the compound and of the pharmaceutical composition comprising the compound in treating anti-apoptotic protein BCL-2-related diseases such as cancer.
    Type: Application
    Filed: May 22, 2020
    Publication date: July 14, 2022
    Applicant: CHIA TAI TIANQING PHARMACEUTICAL GROUP CO., LTD.
    Inventors: Fei LIU, Yanlong LIU, Hongjiang XU, Xiquan ZHANG, Shanchun WANG, Jianqing ZHANG, Weiwei FENG, Bin WANG, Jinan WANG, Yubing WANG, Xujing TANG, Quandeng NIE
  • Publication number: 20220116642
    Abstract: Reconstructing a coded current picture for video decoding including decoding picture partitioning information corresponding to the current picture; determining whether padding is applied to sub-regions of the current picture using the picture partitioning information; based on determining that padding is not applied, decoding the sub-regions without padding the sub-regions; based on determining that padding is applied, determining whether the padding includes wrap-around padding using the picture partitioning information; based on determining that the padding does not include wrap-around padding, applying repetition padding to the sub-regions, and decoding the sub-regions using the repetition padding; based on determining that the padding includes wrap-around padding, applying the wrap-around padding to the sub-regions, and decoding the sub-regions using the wrap-around padding; and reconstructing the current picture based on the decoded sub-regions.
    Type: Application
    Filed: December 23, 2021
    Publication date: April 14, 2022
    Applicant: TENCENT AMERICA LLC
    Inventors: Byeongdoo CHOI, Weiwei FENG, Shan LIU
  • Publication number: 20220094978
    Abstract: A method, computer program, and computer system is provided for coding video data. Video data including (1) a first frame comprising a first current view and a first reference view and (2) a second frame comprising a second current view and a second reference view is received. A co-located block in the first reference view is identified for a current block in the first current view. A predicted offset vector is calculated based on the motion vector between the co-located block and its reference block in the second reference view. The video data is encoded/decoded based on the predicted offset vector.
    Type: Application
    Filed: September 21, 2020
    Publication date: March 24, 2022
    Applicant: TENCENT AMERICA LLC
    Inventors: Jun TIAN, Shan LIU, Xiaozhong XU, Weiwei FENG