Patents by Inventor Teck Wee Foo

Teck Wee Foo 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: 10992962
    Abstract: A coding distortion removing method is provided for removing coding distortion in two adjacent blocks located on both sides of a block boundary between the two adjacent blocks in a reconstructed image. The method includes deriving a difference of pixel values between a pixel in a first block of the reconstructed image and a pixel in a second block of the reconstructed image adjacent to the first block, deriving an average value of the first quantization parameter and the second quantization parameter, and setting a threshold value to the average value of the first quantization parameter and the second quantization parameter. The method also includes comparing the difference of pixel values with the threshold value, and removing a coding distortion in an area disposed on both sides of the block boundary between the first block and the second block, by applying a filter for coding distortion removal.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: April 27, 2021
    Assignee: GODO KAISHA IP BRIDGE 1
    Inventors: Zhong Xue, Sheng Mei Shen, Teck Wee Foo, Chak Joo Lee, Shinya Kadono
  • Patent number: 10965954
    Abstract: A picture coding and decoding method includes a picture coding method for coding an input picture and a picture decoding method for decoding coded picture data. The picture coding method includes dividing the input picture into blocks, coding the input picture on a block basis, decoding the coded data of each block on a block basis, removing coding distortion in an area disposed on both sides of a block boundary, each block being adaptively decoded either as a field structure block or a frame structure block, and storing the reconstructed picture as a reference picture. The picture decoding method includes decoding the coded picture data to obtain a reconstructed picture, removing coding distortion in an area disposed on both sides of a block boundary, each block being adaptively decoded either as a field structure block or a frame structure block, and storing the reconstructed picture as a reference picture.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: March 30, 2021
    Assignee: GODO KAISHA IP BRIDGE 1
    Inventors: Shinya Kadono, Sheng Mei Shen, Teck Wee Foo, Chak Joo Lee, Zhong Xue
  • Patent number: 10958940
    Abstract: An image decoding apparatus is provided that decodes a coded image, the coded image being generated by coding an image segmented into a plurality of blocks on a block basis. The image decoding apparatus includes a quantization parameter obtaining unit that obtains a quantization parameter for each block of the plurality of blocks, a decoding unit that decodes the coded image to obtain a reconstructed image, and a pixel difference value obtaining unit that obtains a pixel difference value. The image decoding apparatus also includes a comparing unit that compares the pixel difference value with a threshold value, and a removing unit that removes a coding distortion in an area disposed on both sides of a block boundary between the first block and the second block, by applying a filter for coding distortion removal.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: March 23, 2021
    Assignee: GODO KAISHA IP BRIDGE 1
    Inventors: Zhong Xue, Sheng Mei Shen, Teck Wee Foo, Chak Joo Lee, Shinya Kadono
  • Patent number: 10939134
    Abstract: A picture coding method provides coding an input picture. The method includes dividing the input picture into a plurality of blocks, coding the input picture on a block basis to obtain coded data of each block, and decoding the coded data of each block on a block basis to obtain a reconstructed picture having a plurality of blocks. The method also includes removing coding distortion in an area disposed on both sides of a block boundary between a first block and an adjacent second block in the reconstructed picture having the plurality of blocks. Each block is adaptively decoded either as a field structure block, including only even field pixels or only odd field pixels, or a frame structure block, including odd field pixels and even field pixels. The method further includes storing the reconstructed picture, for which coding distortion is removed, as a reference picture.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: March 2, 2021
    Assignee: GODO KAISHA IP BRIDGE 1
    Inventors: Shinya Kadono, Sheng Mei Shen, Teck Wee Foo, Chak Joo Lee, Zhong Xue
  • Publication number: 20200068221
    Abstract: A picture coding and decoding method includes a picture coding method for coding an input picture and a picture decoding method for decoding coded picture data. The picture coding method includes dividing the input picture into blocks, coding the input picture on a block basis, decoding the coded data of each block on a block basis, removing coding distortion in an area disposed on both sides of a block boundary, each block being adaptively decoded either as a field structure block or a frame structure block, and storing the reconstructed picture as a reference picture. The picture decoding method includes decoding the coded picture data to obtain a reconstructed picture, removing coding distortion in an area disposed on both sides of a block boundary, each block being adaptively decoded either as a field structure block or a frame structure block, and storing the reconstructed picture as a reference picture.
    Type: Application
    Filed: November 5, 2019
    Publication date: February 27, 2020
    Applicant: GODO KAISHA IP BRIDGE 1
    Inventors: Shinya KADONO, Sheng Mei SHEN, Teck Wee FOO, Chak Joo LEE, Zhong XUE
  • Publication number: 20200068220
    Abstract: A picture coding method provides coding an input picture. The method includes dividing the input picture into a plurality of blocks, coding the input picture on a block basis to obtain coded data of each block, and decoding the coded data of each block on a block basis to obtain a reconstructed picture having a plurality of blocks. The method also includes removing coding distortion in an area disposed on both sides of a block boundary between a first block and an adjacent second block in the reconstructed picture having the plurality of blocks. Each block is adaptively decoded either as a field structure block, including only even field pixels or only odd field pixels, or a frame structure block, including odd field pixels and even field pixels. The method further includes storing the reconstructed picture, for which coding distortion is removed, as a reference picture.
    Type: Application
    Filed: November 5, 2019
    Publication date: February 27, 2020
    Applicant: GODO KAISHA IP BRIDGE 1
    Inventors: Shinya KADONO, Sheng Mei SHEN, Teck Wee FOO, Chak Joo LEE, Zhong XUE
  • Patent number: 10511857
    Abstract: A picture decoding method is provided for decoding coded picture data. The method includes decoding the coded picture data to obtain a reconstructed picture. The method also includes removing coding distortion in an area disposed on both sides of a block boundary between a first block and an adjacent second block in the reconstructed picture having a plurality of blocks, each block being adaptively decoded either as a field structure block, comprising only even field pixels or comprising only odd field pixels, or a frame structure block, comprising odd field pixels and even field pixels. The method further includes storing the reconstructed picture, for which coding distortion is removed, as a reference picture.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: December 17, 2019
    Assignee: GODO KAISHA IP BRIDGE 1
    Inventors: Shinya Kadono, Sheng Mei Shen, Teck Wee Foo, Chak Joo Lee, Zhong Xue
  • Patent number: 10230978
    Abstract: A moving picture coding apparatus includes an inter-pixel filter having filters for filtering decoded image data so as to remove block distortion which is high frequency noise around block boundaries. The inter-pixel filter includes filters having different filtering strengths. The coding apparatus also includes a filter processing control unit for determining a filtering strength of the inter-pixel filter.
    Type: Grant
    Filed: December 27, 2017
    Date of Patent: March 12, 2019
    Assignee: GODO KAISHA IP BRIDGE 1
    Inventors: Teck Wee Foo, Chong Soon Lim, Sheng Mei Shen, Shinya Kadono
  • Publication number: 20180288434
    Abstract: A picture decoding method is provided for decoding coded picture data. The method includes decoding the coded picture data to obtain a reconstructed picture. The method also includes removing coding distortion in an area disposed on both sides of a block boundary between a first block and an adjacent second block in the reconstructed picture having a plurality of blocks, each block being adaptively decoded either as a field structure block, comprising only even field pixels or comprising only odd field pixels, or a frame structure block, comprising odd field pixels and even field pixels. The method further includes storing the reconstructed picture, for which coding distortion is removed, as a reference picture.
    Type: Application
    Filed: June 5, 2018
    Publication date: October 4, 2018
    Applicant: GODO KAISHA IP BRIDGE 1
    Inventors: Shinya KADONO, Sheng Mei SHEN, Teck Wee FOO, Chak Joo LEE, Zhong XUE
  • Publication number: 20180234696
    Abstract: An image decoding method is provided which includes a time information determination step of determining time information of a current picture, a first reference picture referred to by the current picture and a second reference picture referred to by the current picture; a scaling parameter calculation step of calculating a scaling parameter based on a time distance between the first reference picture and a second reference picture; a weighting coefficient determination step of determining two weighting coefficients based on the scaling parameter; a predictive pixel value generation step of generating a predictive pixel value of the current picture by scaling a pixel value of the first reference picture and a pixel value of the second reference picture using the two weighting coefficients determined in the weighting coefficient determination step; and a decoding step of decoding the current picture using the predictive pixel value.
    Type: Application
    Filed: April 9, 2018
    Publication date: August 16, 2018
    Inventors: Shinya KADONO, Chong Soon LIM, Teck Wee FOO, Sheng Mei SHEN
  • Patent number: 10015517
    Abstract: A coding distortion removal method is provided for removing coding distortion in an area disposed on both sides of a block boundary between a first block and an adjacent second block in a picture having a plurality of blocks, each block being adaptively coded either as a field structure block, comprising only even field pixels or comprising only odd field pixels, or a frame structure block, comprising odd field pixels and even field pixels. The method includes detecting whether the block boundary between the first block and the adjacent second block is a block boundary between a field structure block and a frame structure block, and performing a coding distortion removal process on the first block and the adjacent second block. The coding distortion removal process includes determining whether coding distortion removal is needed, determining the number of pixels to be processed, and removing coding distortion.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: July 3, 2018
    Assignee: GODO KAISHA IP BRIDGE 1
    Inventors: Shinya Kadono, Sheng Shen, Teck Wee Foo, Chak Joo Lee, Zhong Xue
  • Patent number: 9973773
    Abstract: An image decoding method is provided which includes a time information determination step of determining time information of a current picture, a first reference picture referred to by the current picture and a second reference picture referred to by the current picture; a scaling parameter calculation step of calculating a scaling parameter based on a time distance between the first reference picture and a second reference picture; a weighting coefficient determination step of determining two weighting coefficients based on the scaling parameter; a predictive pixel value generation step of generating a predictive pixel value of the current picture by scaling a pixel value of the first reference picture and a pixel value of the second reference picture using the two weighting coefficients determined in the weighting coefficient determination step; and a decoding step of decoding the current picture using the predictive pixel value.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: May 15, 2018
    Assignee: GODO KAISHA IP BRIDGE 1
    Inventors: Shinya Kadono, Chong Soon Lim, Teck Wee Foo, Sheng Mei Shen
  • Patent number: 9967584
    Abstract: An image decoding method is provided which includes a time information determination step of determining time information of a current picture, a first reference picture referred to by the current picture and a second reference picture referred to by the current picture; a scaling parameter calculation step of calculating a scaling parameter based on a time distance between the first reference picture and a second reference picture; a weighting coefficient determination step of determining two weighting coefficients based on the scaling parameter; a predictive pixel value generation step of generating a predictive pixel value of the current picture by scaling a pixel value of the first reference picture and a pixel value of the second reference picture using the two weighting coefficients determined in the weighting coefficient determination step; and a decoding step of decoding the current picture using the predictive pixel value.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: May 8, 2018
    Assignee: GODO KAISHA IP BRIDGE 1
    Inventors: Shinya Kadono, Chong Soon Lim, Teck Wee Foo, Sheng Mei Shen
  • Publication number: 20180124402
    Abstract: A moving picture coding apparatus includes an inter-pixel filter having filters for filtering decoded image data so as to remove block distortion which is high frequency noise around block boundaries. The inter-pixel filter includes filters having different filtering strengths. The coding apparatus also includes a filter processing control unit for determining a filtering strength of the inter-pixel filter.
    Type: Application
    Filed: December 27, 2017
    Publication date: May 3, 2018
    Inventors: Teck Wee FOO, Chong Soon LIM, Sheng Mei SHEN, Shinya KADONO
  • Publication number: 20180070104
    Abstract: A coding distortion removal method is provided for removing coding distortion in an area disposed on both sides of a block boundary between a first block and an adjacent second block in a picture having a plurality of blocks, each block being adaptively coded either as a field structure block, comprising only even field pixels or comprising only odd field pixels, or a frame structure block, comprising odd field pixels and even field pixels. The method includes detecting whether the block boundary between the first block and the adjacent second block is a block boundary between a field structure block and a frame structure block, and performing a coding distortion removal process on the first block and the adjacent second block. The coding distortion removal process includes determining whether coding distortion removal is needed, determining the number of pixels to be processed, and removing coding distortion.
    Type: Application
    Filed: November 14, 2017
    Publication date: March 8, 2018
    Applicant: GODO KAISHA IP BRIDGE 1
    Inventors: Shinya KADONO, Sheng SHEN, Teck Wee FOO, Chak Joo LEE, Zhong XUE
  • Patent number: 9900614
    Abstract: A picture decoding method is provided for decoding coded picture data. The decoding method includes decoding coded picture data to obtain a first transform block and an adjacent second transform block in a reconstructed picture having a plurality of blocks forming a moving picture image. The decoding method also includes determining whether the first transform block is located inside a motion-compensation block in which the second transform block is located. The decoding method further includes performing a filtering on pixels in a block boundary between the first and second transform blocks when the first transform block is located outside the motion-compensation block in which the second transform block is located, and performing no filtering on the pixels in the block boundary between the first and second transform blocks when the first transform block is located inside the motion-compensation block in which the second transform block is located.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: February 20, 2018
    Assignee: GODO KAISHA IP BRIDGE 1
    Inventors: Shinya Kadono, Sheng Mei Shen, Teck Wee Foo, Chak Joo Lee, Zhong Xue
  • Patent number: 9888241
    Abstract: A moving picture coding apparatus includes an inter-pixel filter having filters for filtering decoded image data so as to remove block distortion which is high frequency noise around block boundaries. The inter-pixel filter includes filters having different filtering strengths. The coding apparatus also includes a filter processing control unit for determining a filtering strength of the inter-pixel filter.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: February 6, 2018
    Assignee: GODO KAISHA IP BRIDGE 1
    Inventors: Teck Wee Foo, Chong Soon Lim, Sheng Mei Shen, Shinya Kadono
  • Patent number: 9888258
    Abstract: An image coding and decoding system is provided that includes an image coding apparatus and an image decoding apparatus. The image coding apparatus includes a coder that codes an input image, a first decoder that decodes the coded image to obtain a first reconstructed image, a first pixel difference value obtainer, a first average deriver, a first threshold value setter, a first comparator, and a first remover that removes a coding distortion. The image decoding apparatus includes an obtainer that obtains the first quantization parameter of the first block and the second quantization parameter of the second block, a second decoder that decodes the coded image, a second pixel difference value obtainer, a second average deriver, a second comparator, and a second remover that removes a coding distortion in an area disposed on both sides of a block boundary between the first block and the second block.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: February 6, 2018
    Assignee: GODO KAISHA IP BRIDGE 1
    Inventors: Zhong Xue, Sheng Mei Shen, Teck Wee Foo, Chak Joo Lee, Shinya Kadono
  • Patent number: 9854267
    Abstract: A picture decoding method is provided for decoding coded picture data. The decoding method includes decoding coded picture data to obtain a first transform block and an adjacent second transform block in a reconstructed picture having a plurality of blocks forming a moving picture image. The decoding method also includes determining whether the first transform block is located inside a motion-compensation block in which the second transform block is located. The decoding method further includes performing a filtering on pixels in a block boundary between the first and second transform blocks when the first transform block is located outside the motion-compensation block in which the second transform block is located, and performing no filtering on the pixels in the block boundary between the first and second transform blocks when the first transform block is located inside the motion-compensation block in which the second transform block is located.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: December 26, 2017
    Assignee: GODO KAISHA IP BRIDGE 1
    Inventors: Shinya Kadono, Sheng Mei Shen, Teck Wee Foo, Chak Joo Lee, Zhong Xue
  • Patent number: 9854240
    Abstract: A moving picture coding apparatus includes an inter-pixel filter having filters for filtering decoded image data so as to remove block distortion which is high frequency noise around block boundaries. The inter-pixel filter includes filters having different filtering strengths. The coding apparatus also includes a filter processing control unit for determining a filtering strength of the inter-pixel filter.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: December 26, 2017
    Assignee: GODO KAISHA IP BRIDGE 1
    Inventors: Teck Wee Foo, Chong Soon Lim, Sheng Mei Shen, Shinya Kadono