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).
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Patent number: 11979606Abstract: 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: GrantFiled: October 6, 2021Date of Patent: May 7, 2024Assignee: TENCENT AMERICA LLCInventors: Xiang Zhang, Wen Gao, Shan Liu, Weiwei Feng, Bing Jian
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Publication number: 20240050601Abstract: 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: ApplicationFiled: December 28, 2021Publication date: February 15, 2024Inventor: Weiwei Feng
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Publication number: 20230405141Abstract: 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: ApplicationFiled: August 13, 2021Publication date: December 21, 2023Inventors: Xiquan ZHANG, Tianxi CHEN, Weiwei FENG, Bing ZHANG, Xiaoqi TANG, Tongjie XU, Xiaojin WANG, Huace SHENG, Zhengping ZHANG, Hua WANG, Yong GAO
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Patent number: 11843802Abstract: 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: GrantFiled: August 23, 2021Date of Patent: December 12, 2023Assignee: TENCENT AMERICA LLCInventors: Jun Tian, Shan Liu, Xiaozhong Xu, Weiwei Feng, Wen Gao
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Publication number: 20230323218Abstract: 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: ApplicationFiled: February 27, 2023Publication date: October 12, 2023Applicants: Fuzhou University, Qingyuan Innovation LaboratoryInventors: Qingyan CUI, Weiwei FENG, Xiaojun BAO, Tinghai WANG, Pei YUAN
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Publication number: 20230281921Abstract: 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: ApplicationFiled: November 8, 2022Publication date: September 7, 2023Applicant: TENCENT AMERICA LLCInventors: Dan MIAO, Bing JIAN, Weiwei FENG, Shan LIU, Ye WANG
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Publication number: 20230245390Abstract: 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: ApplicationFiled: November 4, 2022Publication date: August 3, 2023Applicant: Tencent America LLCInventors: Haichao ZHU, Bing JIAN, Weiwei FENG, Lu HE, Kelin LIU, Shan LIU
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Publication number: 20230174528Abstract: 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: ApplicationFiled: April 29, 2021Publication date: June 8, 2023Applicant: 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
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Patent number: 11670045Abstract: 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: GrantFiled: October 15, 2021Date of Patent: June 6, 2023Assignee: TENCENT AMERICA LLCInventors: Xiang Zhang, Bing Jian, Lu He, Haichao Zhu, Shan Liu, Kelin Liu, Weiwei Feng
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Patent number: 11651533Abstract: 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: GrantFiled: October 15, 2021Date of Patent: May 16, 2023Assignee: TENCENT AMERICA LLCInventors: Xiang Zhang, Bing Jian, Lu He, Haichao Zhu, Shan Liu, Kelin Liu, Weiwei Feng
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Publication number: 20220394295Abstract: 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: ApplicationFiled: October 13, 2021Publication date: December 8, 2022Applicant: TENCENT AMERICA LLCInventors: Xiang Zhang, Wen Gao, Shan Liu, Weiwei Feng, Bing Jian
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Publication number: 20220394293Abstract: 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: ApplicationFiled: October 6, 2021Publication date: December 8, 2022Applicant: TENCENT AMERICA LLCInventors: Xiang Zhang, Wen Gao, Shan Liu, Weiwei Feng, Bing Jian
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Publication number: 20220394294Abstract: 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: ApplicationFiled: October 7, 2021Publication date: December 8, 2022Applicant: TENCENT AMERICA LLCInventors: Xiang ZHANG, Weiwei Feng, Wen Gao, Shan Liu, Bing Jian
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Publication number: 20220358694Abstract: 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: ApplicationFiled: October 15, 2021Publication date: November 10, 2022Applicant: TENCENT AMERICA LLCInventors: Xiang ZHANG, Bing JIAN, Lu HE, Haichao ZHU, Shan LIU, Kelin LIU, Weiwei FENG
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Publication number: 20220358671Abstract: 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: ApplicationFiled: October 8, 2021Publication date: November 10, 2022Applicant: TENCENT AMERICA LLCInventors: Xiang ZHANG, Bing JIAN, Lu HE, Haichao ZHU, Shan LIU, Kelin LIU, Weiwei FENG
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Publication number: 20220358716Abstract: 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: ApplicationFiled: October 15, 2021Publication date: November 10, 2022Applicant: TENCENT AMERICA LLCInventors: Xiang ZHANG, Bing Jian, Lu He, Haichao Zhu, Shan Liu, Kelin Liu, Weiwei Feng
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Patent number: 11418810Abstract: 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: GrantFiled: September 21, 2020Date of Patent: August 16, 2022Assignee: TENCENT AMERICA LLCInventors: Jun Tian, Shan Liu, Xiaozhong Xu, Weiwei Feng
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Publication number: 20220220110Abstract: 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: ApplicationFiled: May 22, 2020Publication date: July 14, 2022Applicant: 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
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Publication number: 20220116642Abstract: 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: ApplicationFiled: December 23, 2021Publication date: April 14, 2022Applicant: TENCENT AMERICA LLCInventors: Byeongdoo CHOI, Weiwei FENG, Shan LIU
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Publication number: 20220094978Abstract: 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: ApplicationFiled: September 21, 2020Publication date: March 24, 2022Applicant: TENCENT AMERICA LLCInventors: Jun TIAN, Shan LIU, Xiaozhong XU, Weiwei FENG