Patents by Inventor Zeqiang Li
Zeqiang 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).
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Patent number: 11818399Abstract: There is included a method and apparatus comprising computer code configured to cause a processor or processors to perform obtaining a video bitstream, coding the video bitstream at least partly by a neural network, determining topology information and parameters of the neural network, signaling the determined topology information and the parameters of the neural network in a plurality of syntax elements associated with the coded video bitstream.Type: GrantFiled: September 16, 2021Date of Patent: November 14, 2023Assignee: TENCENT AMERICA LLCInventors: Byeongdoo Choi, Zeqiang Li, Wei Jiang, Wei Wang, Xiaozhong Xu, Stephan Wenger, Shan Liu
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Patent number: 11647216Abstract: A method and apparatus for video coding comprising computer code configured to cause at least one processor to perform obtaining an input video stream, generating a coded video bitstream based on the input video stream using a neural network, the coded video bitstream including a plurality of supplemental enhancement information (SEI) messages and blocks, determining a plurality of pieces of neural network topology information associated with the neural network, and signaling the determined plurality of pieces of neural network topology information in a plurality of syntax elements associated with the coded video bitstream.Type: GrantFiled: October 12, 2021Date of Patent: May 9, 2023Assignee: TENCENT AMERICA LLCInventors: Byeongdoo Choi, Zeqiang Li, Wei Wang, Wei Jiang, Stephan Wenger, Shan Liu
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Patent number: 11601661Abstract: A method, apparatus and storage medium for performing video coding are provided. The method includes obtaining a plurality of image frames in a video sequence; determining a feature map for each of the plurality of image frames and determining an offset map based on the feature map; determining an aligned feature map by performing a temporal deformable convolution (TDC) on the feature map and the offset map; and generating a plurality of aligned frames based on the aligned feature map.Type: GrantFiled: August 5, 2021Date of Patent: March 7, 2023Assignee: TENCENT AMERICA LLCInventors: Wei Jiang, Wei Wang, Zeqiang Li, Shan Liu
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Patent number: 11582453Abstract: A method, computer program, and computer system is provided for video encoding and decoding. Video data including one or more frames is received. One or more quantization parameters associated with the received video data are determined for frame generation or enhancement of a target frame from among the one or more frames. The video data is decoded based on the determined quantization parameters.Type: GrantFiled: July 6, 2021Date of Patent: February 14, 2023Assignee: TENCENT AMERICA LLCInventors: Zeqiang Li, Wei Wang, Xiaozhong Xu, Wei Jiang, Shan Liu
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Publication number: 20230007240Abstract: Video coding using neural network based inter-frame prediction is performed by generating a current reference frame by generating intermediate flows based on two input frames, performing backward warping of the input frames to generate reconstruction frames, and generating a fusion map and a residual map based on the input frames, the intermediate flows and the reconstruction frames. The video coding method further includes outputting an enhanced frame or a virtual reference picture by generating a feature map with different levels, based on the current reference frame, a first reference frame and a second reference frame, generating a predicted frame based on aligned features from the generated feature map by refining the current reference frame, the first reference frame, and the second reference frame, generating a final residual based on the predicted frame, and computing the enhanced frame as an output by adding the final residual to the current reference frame.Type: ApplicationFiled: September 8, 2022Publication date: January 5, 2023Applicant: TENCENT AMERICA LLCInventors: Zeqiang LI, Byeongdoo Choi, Wei Wang, Wei Jiang, Xiaozhong Xu, Shan Liu
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Patent number: 11503323Abstract: A method of performing inter-picture prediction of a current picture of a video sequence is performed by at least one processor and includes determining whether the current picture uses a virtual reference picture, and based on the current picture being determined to use the virtual reference picture, generating, for the current picture, the virtual reference picture from neighboring reference pictures that are nearest neighbors to the virtual reference picture, storing the generated virtual reference picture in a decoded picture buffer, and adding the generated virtual reference picture to an active reference picture list. The method further includes performing the inter-picture prediction of the current picture, based on the active reference picture list to which the virtual reference picture is added.Type: GrantFiled: May 25, 2021Date of Patent: November 15, 2022Assignee: TENCENT AMERICA LLCInventors: Byeongdoo Choi, Zeqiang Li, Wei Wang, Xiaozhong Xu, Shan Liu
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Patent number: 11490078Abstract: Video coding using neural network based inter-frame prediction is performed by generating a current reference frame by generating intermediate flows based on two input frames, performing backward warping of the input frames to generate reconstruction frames, and generating a fusion map and a residual map based on the input frames, the intermediate flows and the reconstruction frames. The video coding method further includes outputting an enhanced frame or a virtual reference picture by generating a feature map with different levels, based on the current reference frame, a first reference frame and a second reference frame, generating a predicted frame based on aligned features from the generated feature map by refining the current reference frame, the first reference frame, and the second reference frame, generating a final residual based on the predicted frame, and computing the enhanced frame as an output by adding the final residual to the current reference frame.Type: GrantFiled: September 16, 2021Date of Patent: November 1, 2022Assignee: TENCENT AMERICA LLCInventors: Zeqiang Li, Byeongdoo Choi, Wei Wang, Wei Jiang, Xiaozhong Xu, Shan Liu
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Publication number: 20220337857Abstract: A method and apparatus for video coding comprising computer code configured to cause at least one processor to perform obtaining an input video stream, generating a coded video bitstream based on the input video stream using a neural network, the coded video bitstream including a plurality of supplemental enhancement information (SEI) messages and blocks, determining a plurality of pieces of neural network topology information associated with the neural network, and signaling the determined plurality of pieces of neural network topology information in a plurality of syntax elements associated with the coded video bitstream.Type: ApplicationFiled: October 12, 2021Publication date: October 20, 2022Applicant: TENCENT AMERICA LLCInventors: Byeongdoo CHOI, Zeqiang LI, Wei WANG, Wei JIANG, Stephan WENGER, Shan LIU
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Publication number: 20220224900Abstract: A method, computer program, and computer system is provided for video encoding and decoding. Video data including one or more frames is received. One or more quantization parameters associated with the received video data are determined for frame generation or enhancement of a target frame from among the one or more frames. The video data is decoded based on the determined quantization parameters.Type: ApplicationFiled: July 6, 2021Publication date: July 14, 2022Applicant: TENCENT AMERICA LLCInventors: Zeqiang LI, Wei WANG, Xiaozhong XU, Wei JIANG, Shan LIU
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Publication number: 20220224924Abstract: A method, computer program, and computer system is provided for video encoding and decoding. Video data including a current picture is received. A virtual reference frame is generated for the current picture based on hierarchical level associated with the current picture and a nearest decoded picture. The video data is decoded based on the generated reference frame.Type: ApplicationFiled: September 17, 2021Publication date: July 14, 2022Applicant: TENCENT AMERICA LLCInventors: Zeqiang LI, Xiaozhong Xu, Wei Wang, Wei Jiang, Shan Liu
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Publication number: 20220217403Abstract: There is included a method and apparatus comprising computer code configured to cause a processor or processors to perform obtaining a video bitstream, coding the video bitstream at least partly by a neural network, determining topology information and parameters of the neural network, signaling the determined topology information and the parameters of the neural network in a plurality of syntax elements associated with the coded video bitstream.Type: ApplicationFiled: September 16, 2021Publication date: July 7, 2022Applicant: TENCENT AMERICA LLCInventors: Byeongdoo CHOI, Zeqiang LI, Wei JIANG, Wei WANG, Xiaozhong XU, Stephan WENGER, Shan LIU
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Publication number: 20220210402Abstract: Video coding using neural network based inter-frame prediction is performed by generating a current reference frame by generating intermediate flows based on two input frames, performing backward warping of the input frames to generate reconstruction frames, and generating a fusion map and a residual map based on the input frames, the intermediate flows and the reconstruction frames. The video coding method further includes outputting an enhanced frame or a virtual reference picture by generating a feature map with different levels, based on the current reference frame, a first reference frame and a second reference frame, generating a predicted frame based on aligned features from the generated feature map by refining the current reference frame, the first reference frame, and the second reference frame, generating a final residual based on the predicted frame, and computing the enhanced frame as an output by adding the final residual to the current reference frame.Type: ApplicationFiled: September 16, 2021Publication date: June 30, 2022Applicant: TENCENT AMERICA LLCInventors: Zeqiang LI, Byeongdoo CHOI, Wei WANG, Wei JIANG, Xiaozhong XU, Shan LIU
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Publication number: 20220116633Abstract: A method, apparatus and storage medium for performing video coding are provided. The method includes obtaining a plurality of image frames in a video sequence; determining a feature map for each of the plurality of image frames and determining an offset map based on the feature map; determining an aligned feature map by performing a temporal deformable convolution (TDC) on the feature map and the offset map; and generating a plurality of aligned frames based on the aligned feature map.Type: ApplicationFiled: August 5, 2021Publication date: April 14, 2022Applicant: TENCENT AMERICA LLCInventors: Wei JIANG, Wei Wang, Zeqiang Li, Shan Liu
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Publication number: 20220094962Abstract: A method of performing inter-picture prediction of a current picture of a video sequence is performed by at least one processor and includes determining whether the current picture uses a virtual reference picture, and based on the current picture being determined to use the virtual reference picture, generating, for the current picture, the virtual reference picture from neighboring reference pictures that are nearest neighbors to the virtual reference picture, storing the generated virtual reference picture in a decoded picture buffer, and adding the generated virtual reference picture to an active reference picture list. The method further includes performing the inter-picture prediction of the current picture, based on the active reference picture list to which the virtual reference picture is added.Type: ApplicationFiled: May 25, 2021Publication date: March 24, 2022Applicant: TENCENT AMERICA LLCInventors: Byeongdoo Choi, Zeqiang Li, Wei Wang, Xiaozhong Xu, Shan Liu