Patents by Inventor Nam Ling

Nam Ling 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: 11190809
    Abstract: An apparatus including a memory operably coupled to a processor. The processor is configured to determine whether to use an intra smoothing filter for a rectangular prediction unit (PU), wherein a width of the rectangular PU is different from a height of the rectangular PU.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: November 30, 2021
    Assignee: Futurewei Technologies, Inc.
    Inventors: Guichun Li, Lingzhi Liu, Changcai Lai, Nam Ling, Jianhua Zheng, Chen-Xiong Zhang
  • Patent number: 10764577
    Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for performing intra coding predictions. An intra-coding process applied to pixels in a frame of media is determined. The intra-coding process is determined whether to corresponding to at least one of most probable modes. In response to determining the intra-coding process does not correspond to the at least one of the most probable modes, four angular prediction modes are extracted from a list of prediction modes. A set of candidates based on the four angular prediction modes are determined. A pre-defined order of the set of candidates is determined, wherein each candidate mode of the set of candidate modes is included in a ranked order and signaled with a particular fixed length coding, and wherein a length of the particular fixed length coding increases based on the pre-defined order of the set of candidate modes.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: September 1, 2020
    Assignees: Futurewei Technologies, Inc., Santa Clara University
    Inventors: Minqiang Jiang, Taru Kanchan, Jianhua Zheng, Nam Ling, Chen-Xiong Zhang
  • Publication number: 20200204830
    Abstract: An apparatus including a memory operably coupled to a processor. The processor is configured to determine whether to use an intra smoothing filter for a rectangular prediction unit (PU), wherein a width of the rectangular PU is different from a height of the rectangular PU.
    Type: Application
    Filed: March 2, 2020
    Publication date: June 25, 2020
    Inventors: Guichun Li, Lingzhi Liu, Changcai Lai, Nam Ling, Jianhua Zheng, Chen-Xiong Zhang
  • Patent number: 10645422
    Abstract: An apparatus including a memory operably coupled to a processor. The processor is configured to select an intra smoothing filter for a rectangular prediction unit (PU) based on a lookup table (LUT) used for square PUs, wherein a width of the rectangular PU is different from a height of the rectangular PU.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: May 5, 2020
    Assignee: Futurewei Technologies, Inc.
    Inventors: Guichun Li, Lingzhi Liu, Changcai Lai, Nam Ling, Jianhua Zheng, Chen-Xiong Zhang
  • Publication number: 20200137385
    Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for performing intra coding predictions. An intra-coding process applied to pixels in a frame of media is determined. The intra-coding process is determined whether to corresponding to at least one of most probable modes. In response to determining the intra-coding process does not correspond to the at least one of the most probable modes, four angular prediction modes are extracted from a list of prediction modes. A set of candidates based on the four angular prediction modes are determined. A pre-defined order of the set of candidates is determined, wherein each candidate mode of the set of candidate modes is included in a ranked order and signaled with a particular fixed length coding, and wherein a length of the particular fixed length coding increases based on the pre-defined order of the set of candidate modes.
    Type: Application
    Filed: October 25, 2019
    Publication date: April 30, 2020
    Inventors: Minqiang JIANG, Taru KANCHAN, Jianhua ZHENG, Nam LING, Chen-Xiong ZHANG
  • Patent number: 10587900
    Abstract: System and method embodiments for image coding are disclosed. In an embodiment, a method in a data processing system for image encoding includes determining a sparsity constraint according to a dimension of an input image signal. The method also includes iteratively determining a plurality of approximations to the input image signal. Each iteration provides an approximation of the input image signal. Each approximation includes a set of dictionary element indices and coefficients. The dictionary is an over-complete dictionary. Iterations of the determining step are terminated when a number of iterations is equal to the sparsity constraint. The method also includes selecting one of the plurality of approximations according to a minimum rate-distortion cost. The method also includes determining an encoded image signal according to non-zero coefficients and corresponding indices for each non-zero coefficient in the selected approximation.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: March 10, 2020
    Assignees: FUTUREWEI TECHNOLOGIES, INC., Santa Clara University
    Inventors: Minqiang Jiang, Jianhua Zheng, Madhusudan Kalluri, Nam Ling, Chen-Xiong Zhang
  • Patent number: 10554967
    Abstract: An apparatus comprises a receiver configured to receive video views comprising a reference view and a current view, wherein the reference view comprises a reference block and the current view comprises a current block, and a processor coupled to the receiver and configured to determine neighboring reference pixels associated with the reference block, determine neighboring current pixels associated with the current block, determine a first positional pairing between the neighboring reference pixels and the neighboring current pixels, determine a second positional pairing between the neighboring reference pixels and the neighboring current pixels, and determine an optimal pairing from between the first positional pairing and the second positional pairing.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: February 4, 2020
    Inventors: Zhouye Gu, Jianhua Zheng, Nam Ling, Chen-Xiong Zhang
  • Patent number: 10326995
    Abstract: System and method embodiments are provided for achieving improved View Synthesis Distortion (VSD) calculation and more accurate distortion estimation of encoded video frames. An embodiment method includes obtaining a depth map value for a video frame and determining a weighting factor for depth distortion in accordance with the depth map value. The weighting factor maps a pixel range of the depth map value to an output function having higher values for closer image objects and lower values for farther image objects. The VSD for the video frame is then calculated as a function of absolute horizontal texture gradients weighted by a depth distortion value and the weighting factor determined in accordance with the depth map value.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: June 18, 2019
    Assignees: Futurewei Technologies, Inc., Santa Clara University
    Inventors: Zhouye Gu, Nam Ling, Chen-Xiong Zhang, Jianhua Zheng
  • Patent number: 10306266
    Abstract: A method, an apparatus and a decoder for decoding a block of a depth map are provided. An ordered list of decoding modes is obtained, wherein the ordered list of decoding modes comprises a plurality of decoding modes each of which is capable of being used for decoding of the block. A plurality of depth modeling modes (DMMs) each of which is capable of being used for decoding of the block are obtained. And whether a DMM of the plurality of DMMs is to be added into the ordered list of decoding modes in accordance with a decision condition is determined.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: May 28, 2019
    Assignee: FUTUREWEI TECHNOLOGIES, INC.
    Inventors: Zhouye Gu, Jianhua Zheng, Nam Ling, Chen-Xiong Zhang
  • Patent number: 10129542
    Abstract: A video codec configured to receive a current block and a plurality of neighboring pixels, wherein the current block comprises a first partition and a second partition, select one or more reference pixels from the plurality of neighboring pixels, and predict a plurality of pixels located in the second partition based on the reference pixels.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: November 13, 2018
    Assignees: Futurewei Technologies, Inc., Santa Clara University
    Inventors: Zhouye Gu, Jianhua Zheng, Nam Ling, Philipp Zhang
  • Publication number: 20180295386
    Abstract: An apparatus including a memory operably coupled to a processor. The processor is configured to select an intra smoothing filter for a rectangular prediction unit (PU) based on a lookup table (LUT) used for square PUs, wherein a width of the rectangular PU is different from a height of the rectangular PU.
    Type: Application
    Filed: June 7, 2018
    Publication date: October 11, 2018
    Inventors: Guichun Li, Lingzhi Liu, Changcai Lai, Nam Ling, Jianhua Zheng, Chen-Xiong Zhang
  • Patent number: 10097838
    Abstract: A method for coding a coding unit that is coded with a single sample value is provided. The method selects a coding pattern from at least two predetermined coding patterns, each of which includes a plurality of boundary neighboring samples of the coding unit that have been reconstructed, and decodes the coding unit according to a value of at least one of the plurality of boundary neighboring samples of the selected coding pattern that is available.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: October 9, 2018
    Assignees: Futurewei Technologies, Inc., Santa Clara University
    Inventors: Jianhua Zheng, Zhouye Gu, Chen-Xiong Zhang, Nam Ling
  • Patent number: 10085028
    Abstract: A method for reducing a computational load in high efficiency video coding includes generating a full rate distortion calculation list of selected intra coding modes where the intra coding modes including intra prediction modes and depth modeling modes. A rate distortion cost is determined, with a segment-wise depth coding mode being disabled, for each intra prediction mode in the full rate distortion calculation list and a smallest rate distortion cost intra prediction mode is selected. A rate distortion cost for a particular intra prediction mode is calculated with the segment-wise depth coding mode enabled. After comparison, one of the particular intra prediction mode and the smallest rate distortion cost intra prediction mode having the smallest rate distortion cost is applied to a prediction unit.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: September 25, 2018
    Assignees: Futurewei Technologies, Inc., Santa Clara University
    Inventors: Zhouye Gu, Jianhua Zheng, Nam Ling, Chen-Xiong Zhang
  • Patent number: 10057586
    Abstract: Depth based block partitioning in high efficiency video coding is provided by partitioning a video image block into different partitions using a binary segmentation mask. A determination is made whether to filter pixels at a boundary between the partitions. A particular pixel is not filtered in response to each adjacent pixel in vertical and horizontal planes in relation to the particular pixel having a same value. The particular pixel is filtered in response to any adjacent pixel in the vertical and horizontal planes in relation to the particular pixel having a different value than any other adjacent pixel in the vertical and horizontal planes in relation to the particular pixel. Pixels are filtered pursuant to a filtering process in response to a filtering determination.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: August 21, 2018
    Assignees: Futurewei Technologies, Inc., Santa Clara University
    Inventors: Zhouye Gu, Jianhua Zheng, Nam Ling, Chen-Xiong Zhang
  • Patent number: 10015522
    Abstract: An apparatus including a memory operably coupled to a processor. The processor is configured to determine whether to use an intra smoothing filter for a rectangular prediction unit (PU) based on a lookup table (LUT) used for square PUs, wherein a width of the rectangular PU is not equal to a height of the rectangular PU.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: July 3, 2018
    Assignee: Futurewei Technologies, Inc.
    Inventors: Guichun Li, Lingzhi Liu, Changcai Lai, Nam Ling, Jianhua Zheng, Chen-Xiong Zhang
  • Publication number: 20180146191
    Abstract: Embodiment methods generate a second set of most probable modes (MPMs) from a plurality of intra prediction modes excluding a first set of MPMs for intra prediction or reconstruction of a luma block. An embodiment method constructs a reference block of the luma block, selects a number of samples in the reference block that have been predicted or reconstructed but not in the luma block, and performs intra prediction (or reconstruction) of the selected samples using each of some or all of the plurality of intra prediction modes excluding the first set of MPMs, thereby generating predicted samples (or reconstructed samples) for the selected samples. Based on the predicted samples (or reconstructed samples) and the selected samples, the second set MPM is selected.
    Type: Application
    Filed: November 20, 2017
    Publication date: May 24, 2018
    Inventors: Minqiang Jiang, Jianhua Zheng, Promila Agarwal, Michael Schimpf, Nam Ling, Chen-Xiong Zhang
  • Patent number: 9807385
    Abstract: An apparatus comprising a processor configured to determine whether to apply an intra smoothing filter for a prediction unit (PU) based on a lookup table (LUT), wherein the LUT comprises data indicating the intra smoothing filter should not be applied for any PU with a block size of 8×8 pixels and associated with directional prediction mode. The disclosure also includes a method comprising generating reference samples, determining a size of a PU block, and selecting the reference samples based on PU block size, wherein filtered reference samples are not selected for PU blocks with a size of 8×8 pixels and associated with directional prediction mode.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: October 31, 2017
    Assignees: Futurewei Technologies, Inc., Santa Clara University
    Inventors: Guichun Li, Lingzhi Liu, Nam Ling, Jianhua Zheng, Chen-Xiong Zhang, Li Song
  • Publication number: 20170310970
    Abstract: System and method embodiments are provided for achieving improved View Synthesis Distortion (VSD) calculation and more accurate distortion estimation of encoded video frames. An embodiment method includes obtaining a depth map value for a video frame and determining a weighting factor for depth distortion in accordance with the depth map value. The weighting factor maps a pixel range of the depth map value to an output function having higher values for closer image objects and lower values for farther image objects. The VSD for the video frame is then calculated as a function of absolute horizontal texture gradients weighted by a depth distortion value and the weighting factor determined in accordance with the depth map value.
    Type: Application
    Filed: June 30, 2017
    Publication date: October 26, 2017
    Inventors: Zhouye Gu, Nam Ling, Chen-Xiong Zhang, Jianhua Zheng
  • Patent number: 9762914
    Abstract: There is disclosed a method, device and computer-readable storage medium for decoding video data. The method includes: obtaining a reference sample array of a video block; obtaining a sum of the reference sample array; calculating a threshold by performing arithmetic right shift to the sum, a shift value of the arithmetic right shift being determined according to size information of the video block; and determining the binary partition pattern by comparing the reference sample array with the threshold.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: September 12, 2017
    Assignees: Futurewei Technologies, Inc., Santa Clara University
    Inventors: Zhouye Gu, Jianhua Zheng, Nam Ling, Chen-Xiong Zhang
  • Publication number: 20170237991
    Abstract: System and method embodiments for image coding are disclosed. In an embodiment, a method in a data processing system for image encoding includes determining a sparsity constraint according to a dimension of an input image signal. The method also includes iteratively determining a plurality of approximations to the input image signal. Each iteration provides an approximation of the input image signal. Each approximation includes a set of dictionary element indices and coefficients. The dictionary is an over-complete dictionary. Iterations of the determining step are terminated when a number of iterations is equal to the sparsity constraint. The method also includes selecting one of the plurality of approximations according to a minimum rate-distortion cost. The method also includes determining an encoded image signal according to non-zero coefficients and corresponding indices for each non-zero coefficient in the selected approximation.
    Type: Application
    Filed: February 15, 2017
    Publication date: August 17, 2017
    Inventors: Minqiang Jiang, Jianhua Zheng, Madhusudan Kalluri, Nam Ling, Chen-Xiong Zhang