Patents by Inventor Shunichi Sekiguchi

Shunichi Sekiguchi 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: 9900611
    Abstract: When an encoding mode corresponding to one of blocks to be encoded into which an image is divided by a block dividing part 2 is an inter encoding mode which is a direct mode, a motion-compensated prediction part 5 selects a motion vector suitable for generation of a prediction image from one or more selectable motion vectors and also carries out a motion-compensated prediction process on the block to be encoded to generate a prediction image by using the motion vector, and outputs index information showing the motion vector to a variable length encoding part 13, and the variable length encoding unit 13 variable-length-encodes the index information.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: February 20, 2018
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yusuke Itani, Shunichi Sekiguchi, Kazuo Sugimoto
  • Patent number: 9900612
    Abstract: When an encoding mode corresponding to one of blocks to be encoded into which an image is divided by a block dividing part 2 is an inter encoding mode which is a direct mode, a motion-compensated prediction part 5 selects a motion vector suitable for generation of a prediction image from one or more selectable motion vectors and also carries out a motion-compensated prediction process on the block to be encoded to generate a prediction image by using the motion vector, and outputs index information showing the motion vector to a variable length encoding part 13, and the variable length encoding unit 13 variable-length-encodes the index information.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: February 20, 2018
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yusuke Itani, Shunichi Sekiguchi, Kazuo Sugimoto
  • Patent number: 9894376
    Abstract: When an encoding mode corresponding to one of blocks to be encoded into which an image is divided by a block dividing part 2 is an inter encoding mode which is a direct mode, a motion-compensated prediction part 5 selects a motion vector suitable for generation of a prediction image from one or more selectable motion vectors and also carries out a motion-compensated prediction process on the block to be encoded to generate a prediction image by using the motion vector, and outputs index information showing the motion vector to a variable length encoding part 13, and the variable length encoding unit 13 variable-length-encodes the index information.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: February 13, 2018
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yusuke Itani, Shunichi Sekiguchi, Kazuo Sugimoto
  • Patent number: 9894375
    Abstract: When an encoding mode corresponding to one of blocks to be encoded into which an image is divided by a block dividing part 2 is an inter encoding mode which is a direct mode, a motion-compensated prediction part 5 selects a motion vector suitable for generation of a prediction image from one or more selectable motion vectors and also carries out a motion-compensated prediction process on the block to be encoded to generate a prediction image by using the motion vector, and outputs index information showing the motion vector to a variable length encoding part 13, and the variable length encoding unit 13 variable-length-encodes the index information.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: February 13, 2018
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yusuke Itani, Shunichi Sekiguchi, Kazuo Sugimoto
  • Publication number: 20180039822
    Abstract: A learning sample collector is configured to collect learning samples which have been classified into respective classes through N-classes discrimination (N is a natural number of 3 or more). A classifier is configured to reclassify the learning samples collected by the learning sample collector into classes applied to M-classes discrimination, where M is smaller than N (M is a natural number of 2 or more and is less than N). A learner is configured to learn a discriminator for performing the M-classes discrimination on a basis of the learning samples reclassified by the classifier.
    Type: Application
    Filed: August 20, 2015
    Publication date: February 8, 2018
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takayuki SEMITSU, Nobuaki MOTOYAMA, Shunichi SEKIGUCHI
  • Publication number: 20170295377
    Abstract: When an intra prediction parameter indicates a horizontal prediction process, an intra prediction unit adds a value proportional to a change in a horizontal direction of the luminance values of pixels adjacent to the top of each block, which is a unit for prediction process of a coding block, to the luminance value of a pixel adjacent to the left of the block to set a result of the addition as a predicted value of a prediction image, whereas when the intra prediction parameter indicates a vertical prediction process, the intra prediction unit adds a value proportional to a change in a vertical direction of the luminance values of pixels adjacent to the left of the block to the luminance value of the pixel adjacent to the top of the block to set the result of the addition as a predicted value of the prediction image.
    Type: Application
    Filed: June 27, 2017
    Publication date: October 12, 2017
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Akira MINEZAWA, Kazuo SUGIMOTO, Shunichi SEKIGUCHI
  • Patent number: 9774872
    Abstract: When the signal format of a color image is YUV4:2:2, and an intra prediction parameter, which is used for an intra-frame prediction process on the chrominance signals in a prediction block, shows the same prediction mode as an intra prediction mode for the luminance signal in the prediction block, an intra prediction unit 4 converts an index indicating the intra prediction mode for the luminance signal, and performs the intra-frame prediction process on the chrominance signals in an intra prediction mode indicated by the index after conversion.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: September 26, 2017
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Akira Minezawa, Ryoji Hattori, Takayuki Semitsu, Yoshimi Moriya, Norimichi Hiwasa, Shunichi Sekiguchi
  • Publication number: 20170244971
    Abstract: When removing a block distortion occurring in a local decoded image, a loop filtering part 11 of an image coding device carries out a filtering process on each of signal components (a luminance signal component and color difference signal components) after setting the intensity of a filter for removing the block distortion for each of the signal components according to a coding mode (an intra coding mode or an inter coding mode) selected by a coding controlling part 1.
    Type: Application
    Filed: April 5, 2017
    Publication date: August 24, 2017
    Applicant: Mitsubishi Electric Corporation
    Inventors: Shunichi SEKIGUCHI, Kazuo SUGIMOTO, Hiroharu SAKATE, Tokumichi MURAKAMI, Akira MINEZAWA
  • Patent number: 9736478
    Abstract: When carrying out an average prediction, an intra predictor carries out a filtering process on target pixels of the intra prediction located at an upper end and a left end of the block, the filtering process using an intermediate prediction value, which is an average value of adjacent pixels of the block, and at least one adjacent pixel of the target pixel. The intra predictor also sets a filter coefficient to ½, associated with the intermediate prediction value for a target pixel at an upper left corner of the block, and sets a filter coefficient to ¼, associated with an adjacent pixel adjacent to an upper side or a left side of the target pixel. As a result, prediction errors locally occurring can be reduced, and the image quality can be improved.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: August 15, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Akira Minezawa, Kazuo Sugimoto, Shunichi Sekiguchi
  • Patent number: 9723316
    Abstract: When an intra prediction parameter indicates a horizontal prediction process, an intra prediction unit adds a value proportional to a change in a horizontal direction of the luminance values of pixels adjacent to the top of each block, which is a unit for prediction process of a coding block, to the luminance value of a pixel adjacent to the left of the block to set a result of the addition as a predicted value of a prediction image, whereas when the intra prediction parameter indicates a vertical prediction process, the intra prediction unit adds a value proportional to a change in a vertical direction of the luminance values of pixels adjacent to the left of the block to the luminance value of the pixel adjacent to the top of the block to set the result of the addition as a predicted value of the prediction image.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: August 1, 2017
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Akira Minezawa, Kazuo Sugimoto, Shunichi Sekiguchi
  • Publication number: 20170171543
    Abstract: An encoding controlling unit 3 selects one transformation block size which provides an optimal degree of encoding efficiency from a set of transformation block sizes which are determined in accordance with an encoding mode 7, and includes the transformation block size selected thereby in optimal compression parameters 20a to notify the transformation block size to a transformation/quantization unit 19, and the transformation/quantization unit 19 divides an optimal prediction differential signal 13a into blocks having the transformation block size included in the optimal compression parameters 20a, and carries out a transformation and quantization process on each of the blocks to generate compressed data 21.
    Type: Application
    Filed: February 27, 2017
    Publication date: June 15, 2017
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yoshimi MORIYA, Shunichi SEKIGUCHI, Kazuo SUGIMOTO, Kohtaro ASAI, Tokumichi MURAKAMI
  • Patent number: 9654773
    Abstract: When removing a block distortion occurring in a local decoded image, a loop filtering part 11 of an image coding device carries out a filtering process on each of signal components (a luminance signal component and color difference signal components) after setting the intensity of a filter for removing the block distortion for each of the signal components according to a coding mode (an intra coding mode or an inter coding mode) selected by a coding controlling part 1.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: May 16, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shunichi Sekiguchi, Kazuo Sugimoto, Hiroharu Sakate, Tokumichi Murakami, Akira Minezawa
  • Patent number: 9628797
    Abstract: When carrying out an average prediction, an intra predictor carries out a filtering process on target pixels of the intra prediction located at an upper end and a left end of the block, the filtering process using an intermediate prediction value, which is an average value of adjacent pixels of the block, and at least one adjacent pixel of the target pixel. The intra predictor also sets a filter coefficient to ¾, associated with the intermediate prediction value for a target pixel at the upper end of the block other than the target pixel at an upper left corner of the block, and sets a filter coefficient to ¼, associated with the adjacent pixel adjacent to the upper side of the target pixel at the upper end of the block. As a result, prediction errors locally occurring can be reduced, and the image quality can be improved.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: April 18, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Akira Minezawa, Kazuo Sugimoto, Shunichi Sekiguchi
  • Patent number: 9609326
    Abstract: When carrying out an average prediction, the intra predictor carries out a filtering process on target pixels of the intra prediction located at an upper end and a left end of the block, the filtering process using an intermediate prediction value, which is an average value of adjacent pixels of the block, and at least one adjacent pixel of the target pixel. The intra predictor sets a filter coefficient to ½, associated with the intermediate prediction value for a target pixel at an upper left corner of the block, and sets a filter coefficient to ¼, associated with an adjacent pixel adjacent to an upper side or a left side of the target pixel. As a result, prediction errors locally occurring can be reduced, and the image quality can be improved.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: March 28, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Akira Minezawa, Kazuo Sugimoto, Shunichi Sekiguchi
  • Publication number: 20170085874
    Abstract: A moving image encoding apparatus for dividing a moving image into a plurality of rectangular regions and encoding the moving image in a unit of the rectangular region. There is a rectangular region size determiner which determines a variable size of the rectangular region, a rectangular region divider which divides an inputted image into the rectangular region, and a rectangular region encoder which determines a coding mode for the rectangular region, and encodes pixel values in the rectangular region.
    Type: Application
    Filed: December 7, 2016
    Publication date: March 23, 2017
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yoshimi Moriya, Shunichi Sekiguchi, Yoshihisa Yamada, Kohtaro Asai
  • Patent number: 9591308
    Abstract: A bit stream generating method, generating apparatus, and non-transitory computer readable medium. The bit stream generating method includes determining a size of rectangular region for a sequence, determining a coding mode for the rectangular region, dividing the rectangular region into the prediction blocks, acquiring differences between the predicted image and the pixel values, dividing the rectangular region of the prediction error into blocks, and multiplexing information about the size of the rectangular region for the sequence.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: March 7, 2017
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yoshimi Moriya, Shunichi Sekiguchi, Yoshihisa Yamada, Kohtaro Asai
  • Patent number: 9560365
    Abstract: An intra-scene and inter-scene adaptive coding unit 6 converts an MPEG-2 video bit stream into a slave stream by using both coded data which is included in the coded data about scene video units in a master stream recorded in a data recording unit 2 and for which alternative coded data to be used for prediction reference has not been retrieved by an inter-scene prediction determining unit 5, and coded data retrieved by the inter-scene prediction determining unit 5 for the prediction reference.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: January 31, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shunichi Sekiguchi, Kazuo Sugimoto, Yusuke Itani, Yoshihisa Yamada, Daiki Kudo, Hirofumi Nishikawa, Junichi Kitsuki, Koichi Takeuchi
  • Patent number: 9503735
    Abstract: A moving image decoding apparatus and decoding method. The apparatus comprises an entropy decoder, a rectangular region size determiner, and a rectangular region decoder. The rectangular region decoder includes a motion compensator performing motion compensation prediction on a motion compensation region using a motion vector information to obtain a prediction image. Further, there is a transformer performing an inverse quantization and inverse orthogonal transformation process based on the block size indication information.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: November 22, 2016
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yoshimi Moriya, Shunichi Sekiguchi, Yoshihisa Yamada, Kohtaro Asai
  • Patent number: 9503718
    Abstract: Disclosed is an image decoding method including a step of variable-length-decoding coded data multiplexed into a bitstream to acquire compressed data associated with a coding block, a reference image restriction flag indicating whether or not to restrict a significant reference image area which is an area on a reference image which can be used for the motion-compensated prediction, and motion information and a motion-compensated prediction step of carrying out a motion-compensated prediction process on the coding block on the basis of the motion information to generate a prediction image, in which the motion-compensated prediction step includes a step of when the prediction image includes a pixel located outside the significant reference image area, carrying out a predetermined extending process to generate the prediction image on the basis of the reference image restriction flag by using the motion information.
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: November 22, 2016
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yusuke Itani, Shunichi Sekiguchi, Kazuo Sugimoto, Tokumichi Murakami
  • Publication number: 20160330468
    Abstract: When a randomly-accessible inter picture is encoded, a prediction image generator sets a reference picture from among a plurality of randomly-accessible intra pictures, and performs a motion-compensated prediction using the set reference picture for a prediction process, and a variable length encoding unit 13 encodes both picture position information showing the position of the reference picture, and identification information showing that the randomly-accessible inter picture is randomly accessible, and multiplexes encoded data about both the picture position information and the identification information into a bitstream.
    Type: Application
    Filed: February 2, 2015
    Publication date: November 10, 2016
    Applicant: Mitsubishi Electric Corporation
    Inventors: Akira MINEZAWA, Shunichi SEKIGUCHI, Yoshimi MORIYA, Ryoji HATTORI, Kazuyuki MIYAZAWA