Patents by Inventor Jiancong Luo

Jiancong Luo 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: 20250234003
    Abstract: The present disclosure provides systems and methods for performing residual coding of video data. According to certain disclosed embodiments, the methods include: receiving control information for coding a video sequence; and determining, based on the control information, a coding method for coding a prediction residual signal of a coding block in the video sequence. The coding method is one of a transform residual coding and a transform-skip residual coding.
    Type: Application
    Filed: April 4, 2025
    Publication date: July 17, 2025
    Inventors: Mohammed Golam SARWER, Jiancong LUO, Yan YE
  • Publication number: 20250234002
    Abstract: The present disclosure provides systems and methods for performing residual coding of video data. According to certain disclosed embodiments, the methods include: receiving control information for coding a video sequence; and determining, based on the control information, a coding method for coding a prediction residual signal of a coding block in the video sequence. The coding method is one of a transform residual coding and a transform-skip residual coding.
    Type: Application
    Filed: April 4, 2025
    Publication date: July 17, 2025
    Inventors: Mohammed Golam SARWER, Jiancong LUO, Yan YE
  • Patent number: 12363320
    Abstract: The present disclosure provides systems and methods for processing video content. The method can include: partitioning, along a partitioning edge, a plurality of blocks associated with a picture into a first partition and a second partition; performing inter prediction on the plurality of blocks, to generate a first prediction signal for the first partition and a second prediction signal for the second partition; and blending the first and second prediction signals for edge blocks associated with the partitioning edge.
    Type: Grant
    Filed: February 23, 2024
    Date of Patent: July 15, 2025
    Assignee: Alibaba Group Holding Limited
    Inventors: Ru-Ling Liao, Jie Chen, Yan Ye, Jiancong Luo
  • Patent number: 12348785
    Abstract: The present disclosure provides systems and methods for processing video content using motion compensation interpolation. The methods include: encoding or decoding a picture block by applying one or more filters to a reference picture, wherein the applying of the one or more filters generates a sample at a fractional sample position, and wherein the one or more filters comprise an 8-tap filter that has a plurality of coefficients [p0, p1, . . . , p7] for each 1/16 fractional sample position p.
    Type: Grant
    Filed: December 28, 2023
    Date of Patent: July 1, 2025
    Assignee: Alibaba Group Holding Limited
    Inventors: Jiancong Luo, Yan Ye, Mohammed Golam Sarwer
  • Publication number: 20250211795
    Abstract: The present disclosure provides a computer-implemented method for encoding video. The method includes: determining whether a coded video sequence (CVS) contains equal number of profile, tier and level (PTL) syntax structures and output layer sets (OLSs); and in response to the CVS containing equal number of PTL syntax structures and OLSs, coding the bitstream without signaling a first PTL syntax element specifying an index, to a list of PTL syntax structures in the VPS, of a PTL syntax structure that applies to a corresponding OLS in the VPS.
    Type: Application
    Filed: March 7, 2025
    Publication date: June 26, 2025
    Inventors: Jie CHEN, Jiancong LUO, Yan YE, Ru-Ling LIAO
  • Publication number: 20250211794
    Abstract: The present disclosure provides a computer-implemented method for encoding video. The method includes: determining whether a coded video sequence (CVS) contains equal number of profile, tier and level (PTL) syntax structures and output layer sets (OLSs); and in response to the CVS containing equal number of PTL syntax structures and OLSs, coding the bitstream without signaling a first PTL syntax element specifying an index, to a list of PTL syntax structures in the VPS, of a PTL syntax structure that applies to a corresponding OLS in the VPS.
    Type: Application
    Filed: March 7, 2025
    Publication date: June 26, 2025
    Inventors: Jie CHEN, Jiancong LUO, Yan YE, Ru-Ling LIAO
  • Patent number: 12341969
    Abstract: Methods, devices, apparatus, systems, architectures and interfaces to improve motion vector (MV) refinement based sub-block (SB) level motion compensated prediction are provided. A decoding method includes receiving a bitstream of encoded video data, the bitstream including at least one block of video data including a plurality of SBs; performing a MV derivation, including a decoder based MV (DMVR) process, for at least one SB in the block to generate a refined MV for each SB; performing SB based motion compensation on the at least one sub-block to generate a SB based prediction within each SB; obtaining a spatial gradient for the prediction within each SB; determining a MV offset for each pixel in each SB; obtaining an intensity change in each SB based on the spatial gradients and MV offsets via an optical flow equation; and refining the prediction within each SB based on the obtained intensity changes.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: June 24, 2025
    Assignee: InterDigital VC Holdings, Inc.
    Inventors: Wei Chen, Yuwen He, Jiancong Luo
  • Publication number: 20250193455
    Abstract: The present disclosure provides a computer-implemented method for encoding video. The method includes: determining whether a coded video sequence (CVS) contains equal number of profile, tier and level (PTL) syntax structures and output layer sets (OLSs); and in response to the CVS containing equal number of PTL syntax structures and OLSs, coding the bitstream without signaling a first PTL syntax element specifying an index, to a list of PTL syntax structures in the VPS, of a PTL syntax structure that applies to a corresponding OLS in the VPS.
    Type: Application
    Filed: February 25, 2025
    Publication date: June 12, 2025
    Inventors: Jie CHEN, Jiancong LUO, Yan YE, Ru-Ling LIAO
  • Publication number: 20250168385
    Abstract: Methods and apparatuses video processing include: in response to receiving a video sequence, encoding first flag data in a parameter set associated with the video sequence, wherein the first flag data represents whether gradual decoding refresh (GDR) is enabled or disabled for the video sequence; when the first flag data represents that the GDR is disabled for the video sequence, encoding a picture header associated with a picture in the video sequence to indicate that the picture is a non-GDR picture; and encoding the non-GDR picture.
    Type: Application
    Filed: January 23, 2025
    Publication date: May 22, 2025
    Inventors: Jie CHEN, Ru-Ling LIAO, Yan YE, Jiancong LUO
  • Publication number: 20250159142
    Abstract: Systems, methods, and instrumentalities are disclosed for processing history-based motion vector prediction (HMVP). A video coding device may generate a history-based motion vector prediction (HMVP) list for a current block. The video coding device derive an HMVP candidate from a previously coded block. The HMVP candidate may include motion information associated with a neighboring block of the current block, one or more reference indices, and a bi-prediction weight index. The video coding device may add the HMVP candidate to the HMVP list for motion compensated prediction of a motion vector associated with the current block. The video coding device use one HMVP selected from the HMVP list to perform motion compensated prediction of the current block. The motion compensated prediction may be performed using the motion information associated with the neighboring block of the current block, the one or more reference indices, and the bi-prediction weight index.
    Type: Application
    Filed: January 17, 2025
    Publication date: May 15, 2025
    Inventors: Xiaoyu Xiu, Yuwen He, Jiancong Luo
  • Patent number: 12294715
    Abstract: The present disclosure provides systems and methods for performing residual coding of video data. According to certain disclosed embodiments, the methods include: receiving control information for coding a video sequence; and determining, based on the control information, a coding method for coding a prediction residual signal of a coding block in the video sequence. The coding method is one of a transform residual coding and a transform-skip residual coding.
    Type: Grant
    Filed: June 10, 2024
    Date of Patent: May 6, 2025
    Inventors: Mohammed Golam Sarwer, Jiancong Luo, Yan Ye
  • Patent number: 12278946
    Abstract: The present disclosure provides methods and apparatuses for processing video content. The method can include: determining whether a picture-header (PH) network-abstraction-layer (NAL) unit is present in a picture unit (PU); in response to the PH NAL unit being present in the PU, determining a first video-coding-layer (VCL) NAL unit of the PU to be a first VCL NAL unit following the PH NAL unit, or in response to the PH NAL unit being not present in the PU, determining that the PU has only one VCL NAL unit and the first VCL NAL unit of the PU is the VCL NAL unit in the PU; and determining whether the first VCL NAL unit of the PU is the first VCL NAL unit of an access unit (AU) containing the PU.
    Type: Grant
    Filed: March 26, 2021
    Date of Patent: April 15, 2025
    Assignee: Alibaba Group Holding Limited
    Inventors: Jiancong Luo, Jie Chen, Yan Ye
  • Publication number: 20250119532
    Abstract: Systems, methods, and instrumentalities are disclosed for a combined inter and intra prediction. A video coding device may receive a motion vector difference (MMVD) mode indication that indicates whether MMVD mode is used to generate inter prediction of a coding unit (CU). The video coding device may receive a combined inter merge/intra prediction (CIIP) indication, for example, when the MMVD mode indication indicates that MMVD mode is not used to generate the inter prediction of the CU. The video coding device may determine whether to use triangle merge mode for the CU, for example, based on the MMVD mode indication and/or the CIIP indication. On a condition that the CIIP indication indicates that CIIP is applied for the CU or the MMVD mode indication indicates that MMVD mode is used to generate the inter prediction, the video coding device may disable the triangle merge mode for the CU.
    Type: Application
    Filed: December 19, 2024
    Publication date: April 10, 2025
    Applicant: InterDigital VC Holdings, Inc.
    Inventors: Xiaoyu Xiu, Yuwen He, Jiancong Luo
  • Patent number: 12267530
    Abstract: The present disclosure provides a computer-implemented method for encoding video. The method includes: determining whether a coded video sequence (CVS) contains equal number of profile, tier and level (PTL) syntax structures and output layer sets (OLSs); and in response to the CVS containing equal number of PTL syntax structures and OLSs, coding the bitstream without signaling a first PTL syntax element specifying an index, to a list of PTL syntax structures in the VPS, of a PTL syntax structure that applies to a corresponding OLS in the VPS.
    Type: Grant
    Filed: June 29, 2023
    Date of Patent: April 1, 2025
    Assignee: Alibaba Group Holding Limited
    Inventors: Jie Chen, Jiancong Luo, Yan Ye, Ru-Ling Liao
  • Publication number: 20250106415
    Abstract: There are provided methods and apparatus for video usability information (VUI) for scalable video coding (SVC). An apparatus includes an encoder (100) for encoding video signal data into a bitstream. The encoder specifies video user information, excluding hypothetical reference decoder parameters, in the bitstream using a high level syntax element. The video user information corresponds to a set of interoperability points in the bitstream relating to scalable video coding (340, 355).
    Type: Application
    Filed: December 10, 2024
    Publication date: March 27, 2025
    Inventors: Jiancong LUO, Lihua ZHU, Peng YIN
  • Publication number: 20250097450
    Abstract: The present disclosure provides methods for picture processing. The method can include: receiving a bitstream comprising a set of pictures; determining, according to the received bitstream, whether a virtual boundary is signaled at a sequence level for the set of pictures; in response to the virtual boundary being signaled at the sequence level, determining a position of the virtual boundary for the set of pictures, the position being bounded by a range signaled in the received bitstream; and disabling in-loop filtering operations across the virtual boundary.
    Type: Application
    Filed: December 5, 2024
    Publication date: March 20, 2025
    Inventors: Jie CHEN, Ru-Ling LIAO, Yan YE, Jiancong LUO
  • Publication number: 20250097429
    Abstract: Systems and methods are described for video coding using affine motion prediction. In an example method, motion vector gradients are determined from respective motion vectors of a plurality of neighboring sub-blocks neighboring a current block. An estimate of at least one affine parameter for the current block is determined based on the motion vector gradients. An affine motion model is determined based at least in part on the estimated affine parameter(s), and a prediction of the current block is generated using the affine motion model. The estimated parameter(s) may be used in the affine motion model itself. Alternatively, the estimated parameter(s) may be used in a prediction of the affine motion model. In some embodiments, only neighboring sub-blocks above and/or to the left of the current block are used in estimating the affine parameter(s).
    Type: Application
    Filed: December 3, 2024
    Publication date: March 20, 2025
    Inventors: Jiancong Luo, Yuwen He, Wei Chen
  • Patent number: 12256082
    Abstract: Systems, methods, and instrumentalities are disclosed for sub-block/block refinement, including sub-block/block boundary refinement, such as block boundary prediction refinement with optical flow (BBPROF). A block comprising a current sub-block may be decoded based on a sample value for a first pixel that is obtained based on, for example, an MV for a current sub-block, an MV for a sub-block adjacent the current sub-block, and a sample value for a second pixel adjacent the first pixel. BBPROF may include determining spatial gradients at pixel(s)/sample location(s). An MV difference may be calculated between a current sub-block and one or more neighboring sub-blocks. An MV offset may be determined at pixel(s)/sample location(s) based on the MV difference. A sample value offset for the pixel in a current sub-block may be determined. The prediction for a reference picture list may be refined by adding the calculated sample value offset to the sub-block prediction.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: March 18, 2025
    Assignee: InterDigital VC Holdings, Inc.
    Inventors: Wei Chen, Jiancong Luo, Yuwen He
  • Publication number: 20250080759
    Abstract: Techniques are disclosed for coding video in applications where regions of video are inactive on a frame to frame basis. According to the techniques, coding processes update and reconstruct only a subset of pixel blocks of pixels within a frame, while other pixel blocks are retained from a previously coded frame stored in a coder's or decoder's reference frame buffer. The technique is called Backward Reference Updating (or “BRU”) for convenience. At a desired pixel block granularity, based on the activity between a current frame to be coded and its reference frame(s), BRU will only perform prediction, transform, quantization, and reconstruction on selected regions that are determined to be active. The reconstructed pixels in these active regions are directly placed onto a specified reference frame in memory instead of creating a new frame. Therefore, fewer memory transfers need to be performed.
    Type: Application
    Filed: August 5, 2024
    Publication date: March 6, 2025
    Inventors: Guoxin JIN, Yeqing WU, Yunfei ZHENG, Dazhong ZHANG, Dzung T. HOANG, Felix C. FERNANDES, Van Luong PHAM, Jiancong LUO, Yixin DU, Hilmi Enes EGILMEZ, Alican NALCI, Jun XIN, Hsi-Jung WU
  • Patent number: 12244846
    Abstract: Methods and apparatuses video processing include: in response to receiving a video sequence, encoding first flag data in a parameter set associated with the video sequence, wherein the first flag data represents whether gradual decoding refresh (GDR) is enabled or disabled for the video sequence; when the first flag data represents that the GDR is disabled for the video sequence, encoding a picture header associated with a picture in the video sequence to indicate that the picture is a non-GDR picture; and encoding the non-GDR picture.
    Type: Grant
    Filed: September 11, 2023
    Date of Patent: March 4, 2025
    Assignee: Alibaba Group Holding Limited
    Inventors: Jie Chen, Ru-Ling Liao, Yan Ye, Jiancong Luo