Patents by Inventor Mahesh Chappalli

Mahesh Chappalli 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: 8693541
    Abstract: A system and method of providing motion estimation is disclosed. A recursive motion estimation module works in conjunction with a non-recursive motion estimation module to provide candidate motion vectors to a selection module. The selection module determines which of the candidates is more likely to yield a desirable result and selects that candidate accordingly.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: April 8, 2014
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Mahesh Chappalli, Yeong-Taeg Kim
  • Patent number: 8630346
    Abstract: Systems and methods for efficiently encoding and/or reformatting video data including transparent overlay portions are disclosed. In one embodiment, the method includes using two prediction regions for predicting the portion of the video including the transparent overlay. In one embodiment, a first of the two prediction regions is determined based on motion compensated prediction in reference to another video frame and a second of the two prediction regions is a collocated portion of video in another frame as referenced by a virtual zero motion vector. A mixing weight factor to be used for combining the two predictions is determined. In one embodiment, the mixing weight factor is determined based on the relative values of two error metrics, a first error metric related to the motion compensated prediction and a second error metric related to the collocated prediction of the virtual zero motion vector.
    Type: Grant
    Filed: February 20, 2007
    Date of Patent: January 14, 2014
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Mahesh Chappalli, Yeong-Taeg Kim
  • Patent number: 8565309
    Abstract: A system and method of collection motion vectors for motion compensated interpolation of digital video are disclosed. For example, one embodiment includes a method of identifying motion vectors for interpolating a portion of a digital video signal. The method comprises identifying a plurality of motion vectors indicative of differences between first and second frames of a digital video signal and projecting each of the motion vectors to a location within a third frame at a time associated with the third frame. The method further includes determining a measure of overlap of each projected location with a portion of a third frame to be interpolated, selecting at least one motion vector based on the measure, and generating at least a portion of a third frame based on the selected at least one motion vector selected. Other embodiments include a system and device configured to perform the method.
    Type: Grant
    Filed: August 28, 2007
    Date of Patent: October 22, 2013
    Inventors: Surapong Lertrattanapanich, Mahesh Chappalli, Yeong-Taeg Kim
  • Patent number: 8254444
    Abstract: Systems and methods for efficiently reformatting video data in regions of video including occlusions are disclosed. In one embodiment, the method includes determining multiple motion vectors that link/relate matching blocks of two reference frames and calculating a measure related to overlap area of the matching blocks in one or both of the reference frames with a block to be constructed in an intermediate frame. The measure related to overlap area takes into account a particular interpolation phase of the frame being constructed in relation to the two reference frames. In one embodiment, a ranking of the measure related to overlap areas is used to classify the block to be constructed according to a degree of occlusion. In another aspect the location of the matching blocks in one or both of the reference frames is used in the classification of the block to be constructed.
    Type: Grant
    Filed: May 14, 2007
    Date of Patent: August 28, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Mahesh Chappalli
  • Patent number: 8068543
    Abstract: A method and system for determining a measure of reliability of a computed motion estimate based on the histogram of the error block obtained based on the computed motion estimate taking into account some aspects of the image content.
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: November 29, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Mahesh Chappalli, Yeong-Taeg Kim, Zhi Zhou
  • Publication number: 20090060041
    Abstract: A system and method of collection motion vectors for motion compensated interpolation of digital video are disclosed. For example, one embodiment includes a method of identifying motion vectors for interpolating a portion of a digital video signal. The method comprises identifying a plurality of motion vectors indicative of differences between first and second frames of a digital video signal and projecting each of the motion vectors to a location within a third frame at a time associated with the third frame. The method further includes determining a measure of overlap of each projected location with a portion of a third frame to be interpolated, selecting at least one motion vector based on the measure, and generating at least a portion of a third frame based on the selected at least one motion vector selected. Other embodiments include a system and device configured to perform the method.
    Type: Application
    Filed: August 28, 2007
    Publication date: March 5, 2009
    Applicant: Samsung Electronics Co, Ltd.
    Inventors: Surapong Lertrattanapanich, Mahesh Chappalli, Yeong-Taeg Kim
  • Publication number: 20080292000
    Abstract: A system and method of providing motion estimation is disclosed. A recursive motion estimation module works in conjunction with a non-recursive motion estimation module to provide candidate motion vectors to a selection module. The selection module determines which of the candidates is more likely to yield a desirable result and selects that candidate accordingly.
    Type: Application
    Filed: May 24, 2007
    Publication date: November 27, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Mahesh Chappalli, Yeong-Taeg Kim
  • Publication number: 20080285650
    Abstract: Systems and methods for efficiently reformatting video data in regions of video including occlusions are disclosed. In one embodiment, the method includes determining multiple motion vectors that link/relate matching blocks of two reference frames and calculating a measure related to overlap area of the matching blocks in one or both of the reference frames with a block to be constructed in an intermediate frame. The measure related to overlap area takes into account a particular interpolation phase of the frame being constructed in relation to the two reference frames. In one embodiment, a ranking of the measure related to overlap areas is used to classify the block to be constructed according to a degree of occlusion. In another aspect the location of the matching blocks in one or both of the reference frames is used in the classification of the block to be constructed.
    Type: Application
    Filed: May 14, 2007
    Publication date: November 20, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Mahesh Chappalli
  • Publication number: 20080198931
    Abstract: Systems and methods for efficiently encoding and/or reformatting video data including transparent overlay portions are disclosed. In one embodiment, the method includes using two prediction regions for predicting the portion of the video including the transparent overlay. In one embodiment, a first of the two prediction regions is determined based on motion compensated prediction in reference to another video frame and a second of the two prediction regions is a collocated portion of video in another frame as referenced by a virtual zero motion vector. A mixing weight factor to be used for combining the two predictions is determined. In one embodiment, the mixing weight factor is determined based on the relative values of two error metrics, a first error metric related to the motion compensated prediction and a second error metric related to the collocated prediction of the virtual zero motion vector.
    Type: Application
    Filed: February 20, 2007
    Publication date: August 21, 2008
    Inventors: Mahesh Chappalli, Yeong-Taeg Kim
  • Publication number: 20080018788
    Abstract: A method of super resolution-based deintelacing processing in interlaced video sequences is provided. Block matching is applied on each image block to obtain a motion vector MV. Using MV as the initial motion vector, optical flow is applied on that block to obtain a sub-pixel resolution motion vector OF. Missing pixels are then interpolated using motion vector OF and one or more images in the sequence.
    Type: Application
    Filed: July 20, 2006
    Publication date: January 24, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Zhi Zhou, Yeong-Taeg Kim, Mahesh Chappalli, Surapong Lertrattanapanich
  • Publication number: 20070291843
    Abstract: A method and system for determining a measure of reliability of a computed motion estimate based on the histogram of the error block obtained based on the computed motion estimate taking into account some aspects of the image content.
    Type: Application
    Filed: June 14, 2006
    Publication date: December 20, 2007
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Mahesh Chappalli, Yeong-Taeg Kim, Zhi Zhou