Patents by Inventor Mohamed K. Cherif

Mohamed K. Cherif 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: 10045003
    Abstract: A method for determining a macroblock (MB) coding mode for a current MB in a dependent view. A window around a co-located MB in a base view is determined, wherein the co-located MB is a MB in the base view having a same location as the current MB in the dependent view. A coding mode complexity value (CMCV) is determined for each MB in the window, wherein the CMCV is based on a coding mode used to encode the MB. Rate distortion optimization (RDO) is performed for the current MB using a reduced number of coding modes if a total CMCV for all MBs in the window is less than a threshold, or using all supported coding modes if the total CMCV for all MBs in the window is greater than the threshold. A coding mode for the current MB is determined based on the RDO results.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: August 7, 2018
    Assignee: ATI TECHNOLOGIES ULC
    Inventors: Jiao Wang, Mohamed K. Cherif
  • Publication number: 20160227189
    Abstract: A method for determining a macroblock (MB) coding mode for a current MB in a dependent view. A window around a co-located MB in a base view is determined, wherein the co-located MB is a MB in the base view having a same location as the current MB in the dependent view. A coding mode complexity value (CMCV) is determined for each MB in the window, wherein the CMCV is based on a coding mode used to encode the MB. Rate distortion optimization (RDO) is performed for the current MB using a reduced number of coding modes if a total CMCV for all MBs in the window is less than a threshold, or using all supported coding modes if the total CMCV for all MBs in the window is greater than the threshold. A coding mode for the current MB is determined based on the RDO results.
    Type: Application
    Filed: April 14, 2016
    Publication date: August 4, 2016
    Applicant: ATI Technologies ULC
    Inventors: Jiao WANG, Mohamed K. CHERIF
  • Patent number: 9351004
    Abstract: A method for coding a dependent view picture based on a reference picture includes selecting a reference picture from a base view picture list if a metric of intra macroblocks in an evaluated picture is greater than a first threshold, selecting a reference picture from a dependent view picture list if a metric of skipped macroblocks in the evaluated picture is greater than a second threshold, and coding a dependent view picture using the selected reference picture. An application-controlled weighting mechanism may be used if both of the thresholds are not met.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: May 24, 2016
    Assignee: ATI TECHNOLOGIES ULC
    Inventors: Mohamed K. Cherif, Lei Zhang, Baochun Li, Syed Y. Ali, Jiao Wang
  • Patent number: 9344727
    Abstract: A method for determining a macroblock (MB) coding mode for a current MB in a dependent view. A window around a co-located MB in a base view is determined, wherein the co-located MB is a MB in the base view having a same location as the current MB in the dependent view. A coding mode complexity value (CMCV) is determined for each MB in the window, wherein the CMCV is based on a coding mode used to encode the MB. Rate distortion optimization (RDO) is performed for the current MB using a reduced number of coding modes if a total CMCV for all MBs in the window is less than a threshold, or using all supported coding modes if the total CMCV for all MBs in the window is greater than the threshold. A coding mode for the current MB is determined based on the RDO results.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: May 17, 2016
    Assignee: ATI TECHNOLOGIES ULC
    Inventors: Jiao Wang, Mohamed K. Cherif
  • Publication number: 20130301725
    Abstract: A method for determining a macroblock (MB) coding mode for a current MB in a dependent view. A window around a co-located MB in a base view is determined, wherein the co-located MB is a MB in the base view having a same location as the current MB in the dependent view. A coding mode complexity value (CMCV) is determined for each MB in the window, wherein the CMCV is based on a coding mode used to encode the MB. Rate distortion optimization (RDO) is performed for the current MB using a reduced number of coding modes if a total CMCV for all MBs in the window is less than a threshold, or using all supported coding modes if the total CMCV for all MBs in the window is greater than the threshold. A coding mode for the current MB is determined based on the RDO results.
    Type: Application
    Filed: May 14, 2012
    Publication date: November 14, 2013
    Applicant: ATI TECHNOLOGIES ULC
    Inventors: Jiao Wang, Mohamed K. Cherif
  • Publication number: 20130163670
    Abstract: A method for coding a dependent view picture based on a reference picture includes selecting a reference picture from a base view picture list if a metric of intra macroblocks in an evaluated picture is greater than a first threshold, selecting a reference picture from a dependent view picture list if a metric of skipped macroblocks in the evaluated picture is greater than a second threshold, and coding a dependent view picture using the selected reference picture. An application-controlled weighting mechanism may be used if both of the thresholds are not met.
    Type: Application
    Filed: March 30, 2012
    Publication date: June 27, 2013
    Applicant: ATI TECHNOLOGIES ULC
    Inventors: Mohamed K. Cherif, Lei Zhang, Baochun Li, Syed Y. Ali, Jiao Wang
  • Publication number: 20130050414
    Abstract: A method and system are provided for navigating and selecting objects within a 3D video image by computing a depth coordinate based upon two-dimensional (2D) image information from left and right views of such objects. In accordance with preferred embodiments, commonly available computer navigation devices and input devices can be used to achieve such navigation and object selection.
    Type: Application
    Filed: August 24, 2011
    Publication date: February 28, 2013
    Applicant: ATI Technologies ULC
    Inventors: Pavel Siniavine, Jitesh Arora, Alexander Zorin, Gabor Sines, Xingping Cao, Philip L. Swan, Mohamed K. Cherif, Edward Callway