Patents by Inventor Viktor Wahadaniah

Viktor Wahadaniah 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).

  • Methods and apparatuses for encoding and decoding video using periodic buffer description
    Patent number: 9900592
    Abstract: A method of encoding video including: writing a plurality of predetermined buffer descriptions into a sequence parameter set of a coded video bitstream; writing a plurality of updating parameters into a slice header of the coded video bitstream for selecting and modifying one buffer description out of the plurality of buffer descriptions; and encoding a slice into the coded video bitstream using the slice header and the modified buffer description.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: February 20, 2018
    Assignee: SUN PATENT TRUST
    Inventors: Viktor Wahadaniah, Chong Soon Lim, Sue Mon Thet Naing, Hai Wei Sun, Takahiro Nishi, Hisao Sasai, Youji Shibahara, Toshiyasu Sugio, Kyoko Tanikawa, Toru Matsunobu
  • Method and apparatus for encoding and decoding video using intra prediction mode dependent adaptive quantization matrix
    Patent number: 9894353
    Abstract: A method of encoding video using intra prediction mode dependent quantization matrix includes: calculating an array of quantizers for each size of block unit (100); encoding the arrays of quantizers into header of compressed video stream (102); selecting one scanning order based on a selected intra prediction mode among a plurality of scanning orders (112); scanning the array of quantizers to obtain a block of quantizers based on the selected scanning order (114).
    Type: Grant
    Filed: June 12, 2012
    Date of Patent: February 13, 2018
    Assignee: SUN PATENT TRUST
    Inventors: Jin Li, Chong Soon Lim, Viktor Wahadaniah, Sue Mon Thet Naing, Hai Wei Sun, Hisao Sasai, Takahiro Nishi, Youji Shibahara, Toshiyasu Sugio, Kyoko Tanikawa, Toru Matsunobu
  • Image coding method and image coding apparatus
    Patent number: 9883201
    Abstract: An image coding method includes: selecting a first picture from plural pictures; setting a first temporal motion vector prediction flag which is associated with the first picture and is a temporal motion vector prediction flag indicating whether or not temporal motion vector prediction is to be used, to indicate that the temporal motion vector prediction is not to be used, and coding the first temporal motion vector prediction flag; coding the first picture without using the temporal motion vector prediction; and coding a second picture which follows the first picture in coding order, with referring to a motion vector of a picture preceding the first picture in coding order being prohibited.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: January 30, 2018
    Assignee: SUN PATENT TRUST
    Inventors: Sue Mon Thet Naing, Chong Soon Lim, Kyaw Kyaw Win, Hai Wei Sun, Viktor Wahadaniah, Takahiro Nishi, Hisao Sasai, Youji Shibahara, Toshiyasu Sugio, Kyoko Tanikawa, Toru Matsunobu, Kengo Terada
  • METHOD OF ENCODING AN IMAGE INTO A CODED IMAGE, METHOD OF DECODING A CODED IMAGE, AND APPARATUSES THEREOF
    Publication number: 20170366816
    Abstract: A method of encoding an image into a coded image, the method comprising: writing a quantization offset parameter into the coded image, determining a prediction mode type for coding a block of image samples of the image into a coding unit of the coded image, determining a quantization parameter for the block of image samples, and determining if the prediction mode type is of a predetermined type, wherein if the prediction mode type is of the predetermined type, the method further comprises: modifying the determined quantization parameter using the quantization offset parameter, and performing a quantization process for the block of image samples using the modified quantization parameter, and wherein if the prediction mode type is not of the predetermined type, the method further comprises: performing a quantization process for the block of image samples using the determined quantization parameter.
    Type: Application
    Filed: September 5, 2017
    Publication date: December 21, 2017
    Inventors: Chong Soon LIM, Viktor WAHADANIAH, Sue Mon Thet NAING, Hisao SASAI, Takahiro NISHI, Youji SHIBAHARA, Toshiyasu SUGIO
  • FILTERING METHOD FOR PERFORMING DEBLOCKING FILTERING ON A BOUNDARY BETWEEN AN INTRA PULSE CODE MODULATION BLOCK AND A NON-INTRA PULSE CODE MODULATION BLOCK WHICH ARE ADJACENT TO EACH OTHER IN AN IMAGE
    Publication number: 20170347127
    Abstract: A filtering method is for performing deblocking filtering on the boundary between an IPCM block and a non-IPCM block adjacent to each other in an image and including: determining a first quantization parameter for the non-IPCM block; determining a second quantization parameter for the IPCM block, using the first quantization parameter; determining a filter strength for the boundary, using the first quantization parameter and the second quantization parameter; and performing the deblocking filtering on the boundary using the determined filter strength.
    Type: Application
    Filed: August 21, 2017
    Publication date: November 30, 2017
    Inventors: Chong Soon LIM, Viktor WAHADANIAH, Sue Mon Thet NAING, Hisao SASAI, Takahiro NISHI, Youji SHIBAHARA, Toshiyasu SUGIO
  • Encoding method and encoding apparatus
    Patent number: 9826230
    Abstract: A filtering method according to the present invention is for filtering a plurality of blocks included in an image, and comprises: determining whether each of the blocks is an IPCM block or not; filtering a non-IPCM block that is not an IPCM block among the blocks to generate filtered data; outputting the filtered data as pixel values of the non-IPCM block, and outputting pixel values of the unfiltered IPCM block as pixel values of the IPCM block.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: November 21, 2017
    Assignee: TAGIVAN II LLC
    Inventors: Chong Soon Lim, Viktor Wahadaniah, Sue Mon Thet Naing, Takahiro Nishi, Youji Shibahara, Hisao Sasai, Toshiyasu Sugio
  • IMAGE DECODING METHOD, IMAGE CODING METHOD, IMAGE DECODING APPARATUS, IMAGE CODING APPARATUS, PROGRAM, AND INTEGRATED CIRCUIT
    Publication number: 20170295371
    Abstract: An image decoding method which can improve both image quality and coding efficiency is an image decoding method for decoding a coded stream which includes a plurality of processing units and a header for the processing units, the coded stream being generated by coding a moving picture, the processing units including at least one processing unit layered to be split into a plurality of smaller processing units, the image decoding method including specifying a hierarchical layer having a processing unit in which a parameter necessary for decoding is stored, by parsing hierarchy depth information stored in the header, and decoding the processing unit using the parameter stored in the processing unit located at the specified hierarchical layer.
    Type: Application
    Filed: June 27, 2017
    Publication date: October 12, 2017
    Inventors: Hisao SASAI, Takahiro NISHI, Youji SHIBAHARA, Chong Soon LIM, Viktor WAHADANIAH, Xuan JING, Sue Mon Thet NAING
  • Method of encoding an image into a coded image, method of decoding a coded image, and apparatuses thereof
    Patent number: 9787993
    Abstract: A method of encoding an image into a coded image, the method comprising: writing a quantization offset parameter into the coded image, determining a prediction mode type for coding a block of image samples of the image into a coding unit of the coded image, determining a quantization parameter for the block of image samples, and determining if the prediction mode type is of a predetermined type, wherein if the prediction mode type is of the predetermined type, the method further comprises: modifying the determined quantization parameter using the quantization offset parameter, and performing a quantization process for the block of image samples using the modified quantization parameter, and wherein if the prediction mode type is not of the predetermined type, the method further comprises: performing a quantization process for the block of image samples using the determined quantization parameter.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: October 10, 2017
    Assignee: SUN PATENT TRUST
    Inventors: Chong Soon Lim, Viktor Wahadaniah, Sue Mon Thet Naing, Hisao Sasai, Takahiro Nishi, Youji Shibahara, Toshiyasu Sugio
  • FILTERING METHOD, MOVING PICTURE CODING APPARATUS, MOVING PICTURE DECODING APPARATUS, AND MOVING PICTURE CODING AND DECODING APPARATUS
    Publication number: 20170280146
    Abstract: A filtering method according to the present invention is for filtering a plurality of blocks included in an image, and comprises: determining whether each of the blocks is an IPCM block or not; filtering a non-IPCM block that is not an IPCM block among the blocks to generate filtered data; outputting the filtered data as pixel values of the non-IPCM block, and outputting pixel values of the unfiltered IPCM block as pixel values of the IPCM block.
    Type: Application
    Filed: June 9, 2017
    Publication date: September 28, 2017
    Inventors: Chong Soon LIM, Viktor WAHADANIAH, Sue Mon Thet NAING, Takahiro NISHI, Youji SHIBAHARA, Hisao SASAI, Toshiyasu SUGIO
  • Filtering method for performing deblocking filtering on a boundary between an intra pulse code modulation block and a non-intra pulse code modulation block which are adjacent to each other in an image
    Patent number: 9774888
    Abstract: A filtering method is for performing deblocking filtering on the boundary between an IPCM block and a non-IPCM block adjacent to each other in an image and including: determining a first quantization parameter for the non-IPCM block; determining a second quantization parameter for the IPCM block, using the first quantization parameter; determining a filter strength for the boundary, using the first quantization parameter and the second quantization parameter; and performing the deblocking filtering on the boundary using the determined filter strength.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: September 26, 2017
    Assignee: TAGIVAN II LLC
    Inventors: Chong Soon Lim, Viktor Wahadaniah, Sue Mon Thet Naing, Hisao Sasai, Takahiro Nishi, Youji Shibahara, Toshiyasu Sugio
  • IMAGE CODING METHOD, IMAGE DECODING METHOD, IMAGE CODING APPARATUS, AND IMAGE DECODING APPARATUS
    Publication number: 20170264915
    Abstract: An image coding method includes: deriving a candidate for a motion vector predictor from a co-located motion vector; adding the candidate to a list; selecting the motion vector predictor from the list; and coding a current block and coding a current motion vector, wherein the deriving includes: deriving the candidate by a first derivation scheme in the case of determining that each of a current reference picture and a co-located reference picture is a long-term reference picture; and deriving the candidate by a second derivation scheme in the case of determining that each of the current reference picture and the co-located reference picture is a short-term reference picture.
    Type: Application
    Filed: May 26, 2017
    Publication date: September 14, 2017
    Inventors: Viktor WAHADANIAH, Chong Soon LIM, Sue Mon Thet NAING, Hai Wei SUN, Toshiyasu SUGIO, Takahiro NISHI, Hisao SASAI, Youji SHIBAHARA, Kyoko TANIKAWA, Toru MATSUNOBU, Kengo TERADA
  • Image decoding method, image coding method, image decoding apparatus, image coding apparatus, program, and integrated circuit
    Patent number: 9749630
    Abstract: An image decoding method which can improve both image quality and coding efficiency is an image decoding method for decoding a coded stream which includes a plurality of processing units and a header for the processing units, the coded stream being generated by coding a moving picture, the processing units including at least one processing unit layered to be split into a plurality of smaller processing units, the image decoding method including specifying a hierarchical layer having a processing unit in which a parameter necessary for decoding is stored, by parsing hierarchy depth information stored in the header, and decoding the processing unit using the parameter stored in the processing unit located at the specified hierarchical layer.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: August 29, 2017
    Assignee: SUN PATENT TRUST
    Inventors: Hisao Sasai, Takahiro Nishi, Youji Shibahara, Chong Soon Lim, Viktor Wahadaniah, Xuan Jing, Sue Mon Thet Naing
  • Image decoding method, image coding method, image decoding apparatus, image coding apparatus, program, and integrated circuit
    Patent number: 9743087
    Abstract: An image decoding method which can improve both image quality and coding efficiency is an image decoding method for decoding a coded stream which includes a plurality of processing units and a header for the processing units, the coded stream being generated by coding a moving picture, the processing units including at least one processing unit layered to be split into a plurality of smaller processing units, the image decoding method including specifying a hierarchical layer having a processing unit in which a parameter necessary for decoding is stored, by parsing hierarchy depth information stored in the header, and decoding the processing unit using the parameter stored in the processing unit located at the specified hierarchical layer.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: August 22, 2017
    Assignee: SUN PATENT TRUST
    Inventors: Hisao Sasai, Takahiro Nishi, Youji Shibahara, Chong Soon Lim, Viktor Wahadaniah, Xuan Jing, Sue Mon Thet Naing
  • Filtering method, moving picture coding apparatus, moving picture decoding apparatus, and moving picture coding and decoding apparatus
    Patent number: 9729874
    Abstract: A filtering method according to the present invention is for filtering a plurality of blocks included in an image, and comprises: determining whether each of the blocks is an IPCM block or not; filtering a non-IPCM block that is not an IPCM block among the blocks to generate filtered data; outputting the filtered data as pixel values of the non-IPCM block, and outputting pixel values of the unfiltered IPCM block as pixel values of the IPCM block.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: August 8, 2017
    Assignee: TAGIVAN II LLC
    Inventors: Chong Soon Lim, Viktor Wahadaniah, Sue Mon Thet Naing, Takahiro Nishi, Youji Shibahara, Hisao Sasai, Toshiyasu Sugio
  • IMAGE CODING METHOD, IMAGE DECODING METHOD, IMAGE CODING APPARATUS, IMAGE DECODING APPARATUS, AND IMAGE CODING AND DECODING APPARATUS
    Publication number: 20170223372
    Abstract: An image coding method includes: writing, into a sequence parameter set, buffer description defining information for defining a plurality of buffer descriptions; selecting one of the buffer descriptions for each processing unit that is a picture or a slice, and writing buffer description selecting information for specifying the selected buffer description, into a first header of the processing unit which is included in the coded bitstream; and coding the processing unit using the selected buffer description, and the buffer description defining information includes long-term information for identifying, among a plurality of reference pictures indicated in the buffer descriptions, a reference picture to be assigned as a long-term reference picture.
    Type: Application
    Filed: April 13, 2017
    Publication date: August 3, 2017
    Inventors: Viktor WAHADANIAH, Chong Soon LIM, Sue Mon Thet NAING, Hai Wei SUN, Takahiro NISHI, Hisao SASAI, Youji SHIBAHARA, Toshiyasu SUGIO, Kyoko TANIKAWA, Toru MATSUNOBU, Kengo TERADA
  • FILTERING METHOD FOR PERFORMING DEBLOCKING FILTERING ON A BOUNDARY BETWEEN AN INTRA PULSE CODE MODULATION BLOCK AND A NON-INTRA PULSE CODE MODULATION BLOCK WHICH ARE ADJACENT TO EACH OTHER IN AN IMAGE
    Publication number: 20170223384
    Abstract: A filtering method is for performing deblocking filtering on the boundary between an IPCM block and a non-IPCM block adjacent to each other in an image and including: determining a first quantization parameter for the non-IPCM block; determining a second quantization parameter for the IPCM block, using the first quantization parameter; determining a filter strength for the boundary, using the first quantization parameter and the second quantization parameter; and performing the deblocking filtering on the boundary using the determined filter strength.
    Type: Application
    Filed: April 13, 2017
    Publication date: August 3, 2017
    Inventors: Chong Soon LIM, Viktor WAHADANIAH, Sue Mon Thet NAING, Hisao SASAI, Takahiro NISHI, Youji SHIBAHARA, Toshiyasu SUGIO
  • IMAGE CODING METHOD, IMAGE DECODING METHOD, IMAGE CODING APPARATUS, IMAGE DECODING APPARATUS, AND IMAGE CODING AND DECODING APPARATUS
    Publication number: 20170208331
    Abstract: An image coding method includes: writing, into a sequence parameter set, buffer description defining information for defining a plurality of buffer descriptions; writing, into the sequence parameter set, reference list description defining information for defining a plurality of reference list descriptions corresponding to the buffer descriptions; and writing, into a first header of each processing unit which is included in a coded bitstream, buffer description selecting information for specifying a selected buffer description.
    Type: Application
    Filed: March 30, 2017
    Publication date: July 20, 2017
    Inventors: Viktor WAHADANIAH, Chong Soon LIM, Sue Mon Thet NAING, Hai Wei SUN, Takahiro NISHI, Hisao SASAI, Youji SHIBAHARA, Toshiyasu SUGIO, Kyoko TANIKAWA, Toru MATSUNOBU, Kengo TERADA
  • IMAGE CODING METHOD AND IMAGE CODING APPARATUS
    Publication number: 20170201768
    Abstract: An image coding method includes: selecting a first picture from plural pictures; setting a first temporal motion vector prediction flag which is associated with the first picture and is a temporal motion vector prediction flag indicating whether or not temporal motion vector prediction is to be used, to indicate that the temporal motion vector prediction is not to be used, and coding the first temporal motion vector prediction flag; coding the first picture without using the temporal motion vector prediction; and coding a second picture which follows the first picture in coding order, with referring to a motion vector of a picture preceding the first picture in coding order being prohibited.
    Type: Application
    Filed: March 28, 2017
    Publication date: July 13, 2017
    Inventors: Sue Mon Thet NAING, Chong Soon LIM, Kyaw Kyaw WIN, Hai Wei SUN, Viktor WAHADANIAH, Takahiro NISHI, Hisao SASAI, Youji SHIBAHARA, Toshiyasu SUGIO, Kyoko TANIKAWA, Toru MATSUNOBU, Kengo TERADA
  • Image coding method, image decoding method, image coding apparatus, and image decoding apparatus
    Patent number: 9699474
    Abstract: An image coding method includes: deriving a candidate for a motion vector predictor from a co-located motion vector; adding the candidate to a list; selecting the motion vector predictor from the list; and coding a current block and coding a current motion vector, wherein the deriving includes: deriving the candidate by a first derivation scheme in the case of determining that each of a current reference picture and a co-located reference picture is a long-term reference picture; and deriving the candidate by a second derivation scheme in the case of determining that each of the current reference picture and the co-located reference picture is a short-term reference picture.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: July 4, 2017
    Assignee: SUN PATENT TRUST
    Inventors: Viktor Wahadaniah, Chong Soon Lim, Sue Mon Thet Naing, Hai Wei Sun, Toshiyasu Sugio, Takahiro Nishi, Hisao Sasai, Youji Shibahara, Kyoko Tanikawa, Toru Matsunobu, Kengo Terada
  • Image coding method, image decoding method, image coding apparatus, image decoding apparatus, and image coding and decoding apparatus
    Patent number: 9681148
    Abstract: An image coding method includes: writing, into a sequence parameter set, buffer description defining information for defining a plurality of buffer descriptions; selecting one of the buffer descriptions for each processing unit that is a picture or a slice, and writing buffer description selecting information for specifying the selected buffer description, into a first header of the processing unit which is included in the coded bitstream; and coding the processing unit using the selected buffer description, and the buffer description defining information includes long-term information for identifying, among a plurality of reference pictures indicated in the buffer descriptions, a reference picture to be assigned as a long-term reference picture.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: June 13, 2017
    Assignee: SUN PATENT TRUST
    Inventors: Viktor Wahadaniah, Chong Soon Lim, Sue Mon Thet Naing, Hai Wei Sun, Takahiro Nishi, Hisao Sasai, Youji Shibahara, Toshiyasu Sugio, Kyoko Tanikawa, Toru Matsunobu, Kengo Terada