Patents by Inventor Vivienne Sze

Vivienne Sze 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: 20190297324
    Abstract: Techniques for context-adaptive binary arithmetic coding (CABAC) coding with a reduced number of context coded and/or bypass coded bins are provided. Rather than using only truncated unary binarization for the syntax element representing the delta quantization parameter and context coding all of the resulting bins as in the prior art, a different binarization is used and only part of the resulting bins are context coded, thus reducing the worst case number of context coded bins for this syntax element. Further, binarization techniques for the syntax element representing the remaining actual value of a transform coefficient are provided that restrict the maximum codeword length of this syntax element to 32 bits or less, thus reducing the number of bypass coded bins for this syntax element over the prior art.
    Type: Application
    Filed: June 11, 2019
    Publication date: September 26, 2019
    Inventors: Vivienne Sze, Madhukar Budagavi
  • Publication number: 20190273933
    Abstract: A method of entropy coding in a video encoder is provided that includes assigning a first bin to a first single-probability bin encoder based on a probability state of the first bin, wherein the first single-probability bin encoder performs binary arithmetic coding based on a first fixed probability state, assigning a second bin to a second single-probability bin encoder based on a probability state of the second bin, wherein the second single-probability bin encoder performs binary arithmetic coding based on a second fixed probability state different from the first fixed probability state, and coding the first bin in the first single-probability bin encoder and the second bin in the second single-probability bin encoder in parallel, wherein the first single-probability bin encoder uses a first rLPS table for the first fixed probability state and the second single-probability bin encoder uses a second rLPS table for the second fixed probability state.
    Type: Application
    Filed: May 21, 2019
    Publication date: September 5, 2019
    Inventors: Vivienne Sze, Madhukar Budagavi
  • Patent number: 10362322
    Abstract: A method and apparatus for encoding and decoding video data, including context encoding or decoding portions of an array of transform coefficients and bypass encoding or decoding a sign indicator for significant transform coefficients in an array related to a block of an image.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: July 23, 2019
    Assignee: Texas Instruments Incorporated
    Inventors: Madhukar Budagavi, Mehmet U. Demircin, Vivienne Sze
  • Patent number: 10349070
    Abstract: A method of entropy coding in a video encoder is provided that includes assigning a first bin to a first single-probability bin encoder based on a probability state of the first bin, wherein the first single-probability bin encoder performs binary arithmetic coding based on a first fixed probability state, assigning a second bin to a second single-probability bin encoder based on a probability state of the second bin, wherein the second single-probability bin encoder performs binary arithmetic coding based on a second fixed probability state different from the first fixed probability state, and coding the first bin in the first single-probability bin encoder and the second bin in the second single-probability bin encoder in parallel, wherein the first single-probability bin encoder uses a first rLPS table for the first fixed probability state and the second single-probability bin encoder uses a second rLPS table for the second fixed probability state.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: July 9, 2019
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Vivienne Sze, Madhukar Budagavi
  • Patent number: 10321131
    Abstract: Techniques for context-adaptive binary arithmetic coding (CABAC) coding with a reduced number of context coded and/or bypass coded bins are provided. Rather than using only truncated unary binarization for the syntax element representing the delta quantization parameter and context coding all of the resulting bins as in the prior art, a different binarization is used and only part of the resulting bins are context coded, thus reducing the worst case number of context coded bins for this syntax element. Further, binarization techniques for the syntax element representing the remaining actual value of a transform coefficient are provided that restrict the maximum codeword length of this syntax element to 32 bits or less, thus reducing the number of bypass coded bins for this syntax element over the prior art.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: June 11, 2019
    Assignee: Texas Instruments Incorporated
    Inventors: Vivienne Sze, Madhukar Budagavi
  • Publication number: 20190166384
    Abstract: A method and a video processor for preventing start code confusion. The method includes aligning bytes of a slice header relating to slice data when the slice header is not byte aligned or inserting differential data at the end of the slice header before the slice data when the slice header is byte aligned, performing emulation prevention byte insertion on the slice header, and combine the slice header and the slice data after performing emulation prevention byte insertion.
    Type: Application
    Filed: January 31, 2019
    Publication date: May 30, 2019
    Inventors: Vivienne Sze, Madhukar Budagavi, Akira Osamoto, Yasutomo Matsuba
  • Publication number: 20190089991
    Abstract: A method for encoding a video sequence in a video encoder to generate a compressed video bit stream is provided that includes binarizing a plurality of syntax elements, wherein each binarized syntax element comprises a string of one or more binary symbols (bins), wherein a bin is one selected from a context-coded bin and bypass bin, encoding the context-coded bins of the binarized syntax elements using binary arithmetic encoding, and adding the bypass bins of the binarized syntax elements to the compressed video bit stream with no encoding.
    Type: Application
    Filed: November 5, 2018
    Publication date: March 21, 2019
    Inventors: Vivienne Sze, Madhukar Budagavi
  • Publication number: 20190082181
    Abstract: A method for encoding a video sequence is provided that includes entropy encoding syntax elements representative of transform coefficients generated as the video sequence is processed, wherein entropy encoding syntax elements representative of a transform coefficient includes binarizing the syntax elements representative of the transform coefficient to generate a plurality of binary symbols (bins), coding a portion of the plurality of bins in context coding mode, and coding a remaining portion of the plurality of bins in bypass coding mode. The method further includes reducing the number of bins that are coded in context coding mode for each transform coefficient in a plurality of subsequent transform coefficients that are entropy encoded after a specified number of transform coefficients have been entropy encoded.
    Type: Application
    Filed: November 13, 2018
    Publication date: March 14, 2019
    Inventors: Vivienne Sze, Madhukar Budagavi
  • Patent number: 10230989
    Abstract: A method and a video processor for preventing start code confusion. The method includes aligning bytes of a slice header relating to slice data when the slice header is not byte aligned or inserting differential data at the end of the slice header before the slice data when the slice header is byte aligned, performing emulation prevention byte insertion on the slice header, and combine the slice header and the slice data after performing emulation prevention byte insertion.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: March 12, 2019
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Vivienne Sze, Madhukar Budagavi, Akira Osamoto, Yasutomo Matsuba
  • Publication number: 20190045197
    Abstract: A method and apparatus for parallel processing of at least two bins relating to at least one of a video and an image. The method includes determining scan type of at least a portion of the at least one of video and an image, analyzing neighboring position of a bin, removing dependencies of context selection based on the scan type and position of location being encoded in a transform, and performing parallel processing of that least two bins.
    Type: Application
    Filed: October 9, 2018
    Publication date: February 7, 2019
    Applicant: Texas Instruments Incorporated
    Inventors: Vivienne Sze, Madhukar Budagavi
  • Publication number: 20180376168
    Abstract: A method for sample adaptive offset (SAO) filtering and SAO parameter signaling in a video encoder is provided that includes determining SAO parameters for largest coding units (LCUs) of a reconstructed picture, wherein the SAO parameters include an indicator of an SAO filter type and a plurality of SAO offsets, applying SAO filtering to the reconstructed picture according to the SAO parameters, and entropy encoding LCU specific SAO information for each LCU of the reconstructed picture in an encoded video bit stream, wherein the entropy encoded LCU specific SAO information for the LCUs is interleaved with entropy encoded data for the LCUs in the encoded video bit stream. Determining SAO parameters may include determining the LCU specific SAO information to be entropy encoded for each LCU according to an SAO prediction protocol.
    Type: Application
    Filed: August 6, 2018
    Publication date: December 27, 2018
    Inventors: Vivienne Sze, Madhukar Budagavi, Woo-Shik Kim, Do-Kyoung Kwon, Minhua Zhou
  • Patent number: 10142637
    Abstract: A method and apparatus for parallel processing of at least two bins relating to at least one of a video and an image. The method includes determining scan type of at least a portion of the at least one of video and an image, analyzing neighboring position of a bin, removing dependencies of context selection based on the scan type and position of location being encoded in a transform, and performing parallel processing of that least two bins.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: November 27, 2018
    Assignee: Texas Instruments Incorporated
    Inventors: Vivienne Sze, Madhukar Budagavi
  • Patent number: 10132620
    Abstract: A method for using structured light in a handheld projection device is provided that includes projecting a structured light pattern in at least one portion of a frame being projected by the handheld projection device, wherein the at least one portion of the frame is a subset of the frame, capturing an image of the projected frame, computing scene depth information based on the structured light pattern in the captured image, and using the scene depth information in processing of a subsequent frame of the video stream.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: November 20, 2018
    Assignee: Texas Instruments Incorporated
    Inventors: Vivienne Sze, Goksel Dedeoglu, Vinay Sharma
  • Patent number: 10129546
    Abstract: A method for encoding a video sequence is provided that includes entropy encoding syntax elements representative of transform coefficients generated as the video sequence is processed, wherein entropy encoding syntax elements representative of a transform coefficient includes binarizing the syntax elements representative of the transform coefficient to generate a plurality of binary symbols (bins), coding a portion of the plurality of bins in context coding mode, and coding a remaining portion of the plurality of bins in bypass coding mode. The method further includes reducing the number of bins that are coded in context coding mode for each transform coefficient in a plurality of subsequent transform coefficients that are entropy encoded after a specified number of transform coefficients have been entropy encoded.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: November 13, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Vivienne Sze, Madhukar Budagavi
  • Patent number: 10123053
    Abstract: A method for encoding a video sequence in a video encoder to generate a compressed video bit stream is provided that includes binarizing a plurality of syntax elements, wherein each binarized syntax element comprises a string of one or more binary symbols (bins), wherein a bin is one selected from a context-coded bin and bypass bin, encoding the context-coded bins of the binarized syntax elements using binary arithmetic encoding, and adding the bypass bins of the binarized syntax elements to the compressed video bit stream with no encoding.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: November 6, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Vivienne Sze, Madhukar Budagavi
  • Patent number: 10070152
    Abstract: A method for sample adaptive offset (SAO) filtering and SAO parameter signaling in a video encoder is provided that includes determining SAO parameters for largest coding units (LCUs) of a reconstructed picture, wherein the SAO parameters include an indicator of an SAO filter type and a plurality of SAO offsets, applying SAO filtering to the reconstructed picture according to the SAO parameters, and entropy encoding LCU specific SAO information for each LCU of the reconstructed picture in an encoded video bit stream, wherein the entropy encoded LCU specific SAO information for the LCUs is interleaved with entropy encoded data for the LCUs in the encoded video bit stream. Determining SAO parameters may include determining the LCU specific SAO information to be entropy encoded for each LCU according to an SAO prediction protocol.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: September 4, 2018
    Assignee: Texas Instruments Incorporated
    Inventors: Vivienne Sze, Woo-Shik Kim, Madhukar Budagavi, Do-Kyoung Kwon, Minhua Zhou
  • Patent number: 9967591
    Abstract: Methods for improved parallel motion estimation are provided that decouple the merging candidate list derivation and motion estimation for merge mode and skip mode and the advanced motion vector predictor (AMVP) candidate list construction from regular motion estimation to increase the coding quality in parallel motion estimation while meeting throughput requirements. This decoupling may be accomplished by modifying the availability rules for spatial motion data (SMD) positions for construction of the candidate lists. As part of the decoupling, largest coding units (LCUs) of a picture may be divided into non-overlapping parallel motion estimation regions (PMER) of equal size. Within a PMER, motion estimation for merge mode, skip mode, and normal inter-prediction mode may be performed in parallel for all the prediction units (PUs) in the PMER.
    Type: Grant
    Filed: June 13, 2017
    Date of Patent: May 8, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Minhua Zhou, Vivienne Sze
  • Patent number: 9888243
    Abstract: A method of quantization matrix compression in a video encoder is provided that includes preprocessing a quantization matrix by performing at least one selected from down-sampling the quantization matrix and imposing 135 degree symmetry on the quantization matrix, performing zigzag scanning on the pre-processed quantization matrix to generate a one dimensional (1D) sequence, predicting the 1D sequence to generate a residual 1D sequence, and coding the residual 1D sequence using kth order exp-Golomb coding to generate a compressed quantization matrix, wherein k?0.
    Type: Grant
    Filed: October 17, 2015
    Date of Patent: February 6, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Minhua Zhou, Vivienne Sze
  • Publication number: 20170357616
    Abstract: A method for decoding an encoded video bit stream in a video decoder is provided that includes determining a scan pattern type for a transform block to be decoded, decoding a column position X and a row position Y of a last non-zero coefficient in the transform block from the encoded video bit stream, selecting a column-row inverse transform order when the scan pattern type is a first type, selecting a row-column inverse transform order when the scan pattern type is a second type, and performing one dimensional (1D) inverse discrete cosine transformation (IDCT) computations according to the selected transform order to inversely transform the transform block to generate a residual block.
    Type: Application
    Filed: August 28, 2017
    Publication date: December 14, 2017
    Inventors: Madhukar Budagavi, Vivienne Sze
  • Publication number: 20170339431
    Abstract: A real-time system and method for displaying video on a display are disclosed. Received compressed video data is decoded to produce an uncompressed first video frame, a first frame syntax element, an uncompressed second video frame, and a second frame syntax element. A computationally intensive process is applied to the uncompressed first video frame to produce an enhanced first video frame. A block having a portion of the enhanced first video frame from the enhanced first video frame is adaptively transferred to the uncompressed second video frame to produce an enhanced second video frame without applying the computationally intensive process to the uncompressed second video frame. The transferring is guided by the first frame syntax element and the second frame syntax element. The enhanced first video frame and the enhanced second video frame are displayed.
    Type: Application
    Filed: March 13, 2017
    Publication date: November 23, 2017
    Inventors: Zhengdong Zhang, Vivienne Sze