Patents by Inventor Christopher A. Segall

Christopher A. Segall 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).

  • SYSTEM FOR ENHANCED IMAGES
    Publication number: 20160343113
    Abstract: A system for enhancing an image includes a cadence detection process that detects a cadence of a series of frames and a scene cut detection process that detects a scene cut of the series of frames. The system also includes a noise monitoring process that detects noise in the series of frames based upon the cadence detection process. The process further includes a temporal filter temporally filtering the series of frames wherein the temporal filtering is modified based upon the scene cut detection process and the noise monitoring process. The system also includes a spatial noise reduction process reducing spatial noise in the series of frames wherein the reducing spatial noise is modified based upon the modified temporally filtered frames and the noise monitoring process.
    Type: Application
    Filed: May 18, 2015
    Publication date: November 24, 2016
    Inventors: Anustup Kumar CHOUDHURY, Christopher A. SEGALL, Xu CHEN, Philip B. COWAN, Petrus J.L. VAN BEEK
  • Methods, devices and systems for parallel video encoding and decoding
    Patent number: 9503745
    Abstract: A method for decoding a video bitstream is disclosed. The method comprises: entropy decoding a first portion of a video bitstream, wherein first portion of video bitstream is associated with a video frame, thereby producing a first portion of decoded data; entropy decoding a second portion of video bitstream, wherein second portion of video bitstream is associated with video frame, thereby producing a second portion of decoded data, wherein entropy decoding second portion of video bitstream is independent of entropy decoding first portion of video bitstream; and reconstructing a first portion of video frame associated with video bitstream using first portion of decoded data and second portion of decoded data.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: November 22, 2016
    Assignee: DOLBY INTERNATIONAL AB
    Inventors: Jie Zhao, Christopher A. Segall, Louis J. Kerofsky
  • Methods and systems for inter-layer image prediction signaling
    Patent number: 9497387
    Abstract: Embodiments of the present invention comprise systems and methods for predicting high dynamic range (HDR) image blocks with block-specific prediction data, where the systems and methods may comprise low dynamic range (LDR) image data and HDR image data for a target image block, where a scaled, offset LDR image block may be combined with HDR residual image block to form an HDR image block corresponding to the target image block.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: November 15, 2016
    Assignee: SHARP LABORATORIES OF AMERICA, INC.
    Inventor: Christopher A Segall
  • Nested Entropy Encoding
    Publication number: 20160309150
    Abstract: Methods and systems for improving coding decoding efficiency of video by providing a syntax modeler, a buffer, and a decoder. The syntax modeler may associate a first sequence of symbols with syntax elements. The buffer may store tables, each represented by a symbol in the first sequence, and each used to associate a respective symbol in a second sequence of symbols with encoded data. The decoder decodes the data into a bitstream using the second sequence retrieved from a table.
    Type: Application
    Filed: June 22, 2016
    Publication date: October 20, 2016
    Inventors: Yeping Su, Christopher A. Segall
  • Nested Entropy Encoding
    Publication number: 20160309151
    Abstract: Methods and systems for improving coding decoding efficiency of video by providing a syntax modeler, a buffer, and a decoder. The syntax modeler may associate a first sequence of symbols with syntax elements. The buffer may store tables, each represented by a symbol in the first sequence, and each used to associate a respective symbol in a second sequence of symbols with encoded data. The decoder decodes the data into a bitstream using the second sequence retrieved from a table.
    Type: Application
    Filed: June 22, 2016
    Publication date: October 20, 2016
    Inventors: Yeping Su, Christopher A. Segall
  • Nested Entropy Encoding
    Publication number: 20160309152
    Abstract: Methods and systems for improving coding decoding efficiency of video by providing a syntax modeler, a buffer, and a decoder. The syntax modeler may associate a first sequence of symbols with syntax elements. The buffer may store tables, each represented by a symbol in the first sequence, and each used to associate a respective symbol in a second sequence of symbols with encoded data. The decoder decodes the data into a bitstream using the second sequence retrieved from a table.
    Type: Application
    Filed: June 22, 2016
    Publication date: October 20, 2016
    Inventors: Yeping Su, Christopher A. Segall
  • Methods, devices and systems for parallel video encoding and decoding
    Patent number: 9473772
    Abstract: A method for decoding a video bitstream is disclosed. The method comprises: entropy decoding a first portion of a video bitstream, wherein first portion of video bitstream is associated with a video frame, thereby producing a first portion of decoded data; entropy decoding a second portion of video bitstream, wherein second portion of video bitstream is associated with video frame, thereby producing a second portion of decoded data, wherein entropy decoding second portion of video bitstream is independent of entropy decoding first portion of video bitstream; and reconstructing a first portion of video frame associated with video bitstream using first portion of decoded data and second portion of decoded data.
    Type: Grant
    Filed: May 5, 2014
    Date of Patent: October 18, 2016
    Assignee: DOLBY INTERNATIONAL AB
    Inventors: Jie Zhao, Christopher A. Segall, Louis J. Kerofsky
  • Image enhancement using semantic components
    Patent number: 9460490
    Abstract: A system for determining a high resolution output image that includes receiving a low resolution image and determining an intermediate high resolution image. The system detects semantic features based upon the input image and selects corresponding semantic components from a database based upon the detected semantic features. The first intermediate high resolution image is modified based upon information from the corresponding semantic components to determine the high resolution output image.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: October 4, 2016
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Anustup Kumar Choudhury, Christopher A. Segall
  • METHODS AND SYSTEMS FOR DETECTION AND ESTIMATION OF COMPRESSION NOISE
    Publication number: 20160267638
    Abstract: Systems and methods for estimation of compression noise in an image or in a video sequence are provided. Difference values in a direction are computed, and one or more statistical feature values for the difference values are computed in association with a plurality of offsets. At least one feature value is computed using the plurality of statistical feature values, and a compression-noise estimate may be determined in accordance with a criterion based on a comparison of the at least on feature value and an associated threshold and an additive noise estimate.
    Type: Application
    Filed: May 20, 2016
    Publication date: September 15, 2016
    Applicant: Sharp Laboratories of America, Inc.
    Inventor: Christopher A. SEGALL
  • Methods, devices and systems for parallel video encoding and decoding
    Patent number: 9445096
    Abstract: A method for decoding a video bitstream is disclosed. The method comprises: entropy decoding a first portion of a video bitstream, wherein first portion of video bitstream is associated with a video frame, thereby producing a first portion of decoded data; entropy decoding a second portion of video bitstream, wherein second portion of video bitstream is associated with video frame, thereby producing a second portion of decoded data, wherein entropy decoding second portion of video bitstream is independent of entropy decoding first portion of video bitstream; and reconstructing a first portion of video frame associated with video bitstream using first portion of decoded data and second portion of decoded data.
    Type: Grant
    Filed: May 5, 2014
    Date of Patent: September 13, 2016
    Assignee: DOLBY INTERNATIONAL AB
    Inventors: Jie Zhao, Christopher A. Segall, Louis J. Kerofsky
  • SYSTEM FOR VIDEO SUPER RESOLUTION USING SEMANTIC COMPONENTS
    Publication number: 20160253784
    Abstract: A method for increasing the resolution of a series of low resolution frames of a low resolution video sequence to a series of high resolution frames of a high resolution video sequence includes receiving the series of low resolution frames of the video sequence. The system determines a first plurality of semantically relevant key points of a first low resolution frame of the series of low resolution frames and determines a second plurality of semantically relevant key points of a second low resolution frame of the series of low resolution frames. The system temporally processes the first plurality of key points based upon the second plurality of key points to determine a more temporally consistent set of key points for the first plurality of key points.
    Type: Application
    Filed: May 13, 2016
    Publication date: September 1, 2016
    Inventors: Xu CHEN, Anustup Kumar A. CHOUDHURY, Christopher A. SEGALL, Petrus J.L. VAN BEEK
  • Nested entropy encoding
    Patent number: 9414092
    Abstract: Methods and systems for improving coding decoding efficiency of video by providing a syntax modeler, a buffer, and a decoder. The syntax modeler may associate a first sequence of symbols with syntax elements. The buffer may store tables, each represented by a symbol in the first sequence, and each used to associate a respective symbol in a second sequence of symbols with encoded data. The decoder decodes the data into a bitstream using the second sequence retrieved from a table.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: August 9, 2016
    Assignee: DOLBY INTERNATIONAL AB
    Inventors: Yeping Su, Christopher A. Segall
  • Video decoder for tiles
    Patent number: 9398307
    Abstract: A system for decoding a video bitstream includes receiving a frame of the video that includes at least one slice and at least one tile and where each of the at least one slice and the at least one tile are not all aligned with one another. Each of the at least one tile is characterized that it is decoded independently of the other the at least one tile including intra-prediction information, motion information. The system receives a set of data from a set of largest coding unit of at least two of the tiles and decoding the largest coding units in a selected manner depending upon a flag in the bitstream. The flag indicates that the decoding is to be performed in a raster scan order within a tile or the decoding is to be performed in a raster scan order across at least two tiles.
    Type: Grant
    Filed: January 20, 2012
    Date of Patent: July 19, 2016
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Christopher A. Segall
  • GOLOMB-RICE/EG Coding Technique for CABAC in HEVC
    Publication number: 20160205412
    Abstract: A system utilizing a high throughput coding mode for CABAC in HEVC is described. The system may include an electronic device configured to obtain a block of data to be encoded using an arithmetic based encoder; to generate a sequence of syntax elements using the obtained block; to compare an Absolute-3 value of the sequence or a parameter associated with the Absolute-3 value to a preset value; and to convert the Absolute-3 value to a codeword using a first code or a second code that is different than the first code, according to a result of the comparison.
    Type: Application
    Filed: February 1, 2016
    Publication date: July 14, 2016
    Inventors: Seung-Hwan Kim, Louis J. Kerofsky, Christopher A. Segall
  • SIGNALING INDICATIONS AND CONSTRAINTS
    Publication number: 20160191926
    Abstract: This invention introduces modification to a syntax signaled in slice segment header related to inter-layer prediction. A syntax optimization is proposed where if syntax element NumActiveRefLayerPics is equal to syntax element NumDirectRefLayers[nuh_layer_id] then the inter_layer_pred_idc[i] syntax elements are not signaled. In this case the value of inter_layer_pred_idc[i] syntax elements is inferred based on other syntax elements already signaled.
    Type: Application
    Filed: July 14, 2014
    Publication date: June 30, 2016
    Inventors: Sachin G. DESHPANDE, Kiran MISRA, Christopher A. Segall
  • Methods, Devices and Systems for Parallel Video Encoding and Decoding
    Publication number: 20160165250
    Abstract: A method for decoding a video bitstream is disclosed. The method comprises: entropy decoding a first portion of a video bitstream, wherein first portion of video bitstream is associated with a video frame, thereby producing a first portion of decoded data; entropy decoding a second portion of video bitstream, wherein second portion of video bitstream is associated with video frame, thereby producing a second portion of decoded data, wherein entropy decoding second portion of video bitstream is independent of entropy decoding first portion of video bitstream; and reconstructing a first portion of video frame associated with video bitstream using first portion of decoded data and second portion of decoded data.
    Type: Application
    Filed: February 10, 2016
    Publication date: June 9, 2016
    Inventors: Jie Zhao, Christopher A. Segall, Louis J. Kerofsky
  • Methods and systems for detection and estimation of compression noise
    Patent number: 9361707
    Abstract: Systems and methods for estimation of compression noise in an image or in a video sequence are provided. Difference values in a first direction are computed, and a plurality of statistical feature values for the difference values are computed in association with a plurality of offsets. At least one feature value is computed using the plurality of statistical feature values, and a compression-noise estimate may be determined in accordance with a criterion based on a comparison of the at least on feature value and an associated threshold and an additive noise estimate.
    Type: Grant
    Filed: October 17, 2013
    Date of Patent: June 7, 2016
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Anustup Kumar Choudhury, Christopher A. Segall
  • Tracking a Reference Picture on an Electronic Device
    Publication number: 20160156923
    Abstract: A method for tracking a reference picture on an electronic device is described. The method includes receiving a bitstream. The method also includes decoding a portion of the bitstream to produce a decoded reference picture. The method further includes tracking the decoded reference picture in a decoded picture buffer (DPB) with reduced overhead referencing. The method additionally includes decoding a picture based on the decoded reference picture.
    Type: Application
    Filed: February 10, 2016
    Publication date: June 2, 2016
    Inventors: Kiran Misra, Sachin G. Deshpande, Christopher A. Segall
  • Context initialization based on decoder picture buffer
    Patent number: 9338465
    Abstract: A method for decoding a video frame includes receiving a slice header of at least one of a plurality of slices, identifying a type of a first slice and a type of a second slice, and initializing a first context associated with the first slice and a second context associated with the second slice using one of a first initialization method and a second initialization method. The first initialization method or the second initialization method is selected according to the type of the first slice and the type of the second slice.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: May 10, 2016
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kiran Misra, Christopher A. Segall
  • Context initialization based on decoder picture buffer
    Patent number: 9338472
    Abstract: A method for decoding a video frame includes receiving a slice in a video decoder, identifying the slice as one of at least a first predicted slice and a second predicted slice, receiving information used to determine a context initialization method corresponding to the slice, and initializing, based on the received information, one of a first context initialization method and a second context initialization method associated with the slice, and decoding the video frame using the slice and one of the first context initialization method and the second context initialization method.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: May 10, 2016
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kiran Misra, Christopher A. Segall