Patents by Inventor Yusuke Itani

Yusuke Itani 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: 9369730
    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: July 21, 2011
    Date of Patent: June 14, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yusuke Itani, Shunichi Sekiguchi, Kazuo Sugimoto
  • Publication number: 20150304677
    Abstract: An image encoding device include a predicting unit for adaptively determining the size of each motion prediction unit block according to color component signals, and for dividing each motion prediction unit block into motion vector allocation regions to search for a motion vector, and a variable length encoding unit for, when a motion vector is allocated to the whole of each motion prediction unit block, performing encoding in mc_skip mode if the motion vector is equal to an estimated vector and a prediction error signal does not exist, and for, when each motion vector allocation region has a size equal to or larger than a predetermined size and a motion vector is allocated to the whole of each motion vector allocation region, performing encoding in sub_mc_skip mode if the motion vector is equal to an estimated vector and a prediction error signal does not exist.
    Type: Application
    Filed: February 19, 2015
    Publication date: October 22, 2015
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shunichi SEKIGUCHI, Kazuo SUGIMOTO, Yusuke ITANI, Akira MINEZAWA, Yoshiaki KATO
  • Publication number: 20150281725
    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: Application
    Filed: February 4, 2015
    Publication date: October 1, 2015
    Inventors: Yusuke ITANI, Shunichi SEKIGUCHI, Kazuo SUGIMOTO
  • Publication number: 20150245032
    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: Application
    Filed: February 4, 2015
    Publication date: August 27, 2015
    Inventors: Yusuke ITANI, Shunichi SEKIGUCHI, Kazuo SUGIMOTO
  • Publication number: 20150245035
    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: Application
    Filed: February 4, 2015
    Publication date: August 27, 2015
    Inventors: Yusuke ITANI, Shunichi SEKIGUCHI, Kazuo SUGIMOTO
  • Publication number: 20150245057
    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: Application
    Filed: February 4, 2015
    Publication date: August 27, 2015
    Inventors: Yusuke ITANI, Shunichi SEKIGUCHI, Kazuo SUGIMOTO
  • Publication number: 20150229949
    Abstract: An image encoding device include a predicting unit for adaptively determining the size of each motion prediction unit block according to color component signals, and for dividing each motion prediction unit block into motion vector allocation regions to search for a motion vector, and a variable length encoding unit for, when a motion vector is allocated to the whole of each motion prediction unit block, performing encoding in mc_skip mode if the motion vector is equal to an estimated vector and a prediction error signal does not exist, and for, when each motion vector allocation region has a size equal to or larger than a predetermined size and a motion vector is allocated to the whole of each motion vector allocation region, performing encoding in sub_mc_skip mode if the motion vector is equal to an estimated vector and a prediction error signal does not exist.
    Type: Application
    Filed: February 19, 2015
    Publication date: August 13, 2015
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shunichi SEKIGUCHI, Kazuo SUGIMOTO, Yusuke ITANI, Akira MINEZAWA, Yoshiaki KATO
  • Publication number: 20150229946
    Abstract: An image encoding device include a predicting unit for adaptively determining the size of each motion prediction unit block according to color component signals, and for dividing each motion prediction unit block into motion vector allocation regions to search for a motion vector, and a variable length encoding unit for, when a motion vector is allocated to the whole of each motion prediction unit block, performing encoding in mc_skip mode if the motion vector is equal to an estimated vector and a prediction error signal does not exist, and for, when each motion vector allocation region has a size equal to or larger than a predetermined size and a motion vector is allocated to the whole of each motion vector allocation region, performing encoding in sub_mc_skip mode if the motion vector is equal to an estimated vector and a prediction error signal does not exist.
    Type: Application
    Filed: February 19, 2015
    Publication date: August 13, 2015
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shunichi SEKIGUCHI, Kazuo SUGIMOTO, Yusuke ITANI, Akira MINEZAWA, Yoshiaki KATO
  • Publication number: 20150195582
    Abstract: Since time hierarchically encoded video data needs to include video data of a basic hierarchical layer, and video data cannot be generated in which a frame belonging to an upper hierarchical layer is only encoded, even in a case in which only a part of frames is processed, a basic hierarchical layer frame is needed to be included, and thus, there has been a problem that video data in which only the frame belonging to the upper hierarchical layer is encoded cannot be separately processed. In the present invention, a variable length encoding unit is disposed which encodes, for each sequence, a basic hierarchical layer existence flag showing whether or not a basic hierarchical layer is included in the sequence.
    Type: Application
    Filed: May 27, 2013
    Publication date: July 9, 2015
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yoshimi Moriya, Kazuo Sugimoto, Akira Minezawa, Shunichi Sekiguchi, Norimichi Hiwasa, Yusuke Itani, Ryoji Hattori
  • Patent number: 9036713
    Abstract: An image encoding device include a predicting unit for adaptively determining the size of each motion prediction unit block according to color component signals, and for dividing each motion prediction unit block into motion, vector allocation regions to search for a motion vector, and a variable length encoding unit for, when a motion vector is allocated to the whole of each motion prediction unit block, performing encoding in mc_skip mode if the motion vector is equal to an estimated vector and a prediction error signal does not exist, and for, when each motion vector allocation region has a size equal to or larger than a predetermined size and a motion vector is allocated to the whole of each motion vector allocation region, performing encoding in sub_mc_skip mode if the motion vector is equal to an estimated vector and a prediction error signal does not exist.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: May 19, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shunichi Sekiguchi, Kazuo Sugimoto, Yusuke Itani, Akira Minezawa, Yoshiaki Kato
  • Publication number: 20150085937
    Abstract: An image encoding device include a predicting unit for adaptively determining the size of each motion prediction unit block according to color component signals, and for dividing each motion prediction unit block into motion, vector allocation regions to search for a motion vector, and a variable length encoding unit for, when a motion vector is allocated to the whole of each motion prediction unit block, performing encoding in mc_skip mode if the motion vector is equal to an estimated vector and a prediction error signal does not exist, and for, when each motion vector allocation region has a size equal to or larger than a predetermined size and a motion vector is allocated to the whole of each motion vector allocation region, performing encoding in sub_mc_skip mode if the motion vector is equal to an estimated vector and a prediction error signal does not exist.
    Type: Application
    Filed: December 4, 2014
    Publication date: March 26, 2015
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shunichi SEKIGUCHI, Kazuo SUGIMOTO, Yusuke ITANI, Akira MINEZAWA, Yoshiaki KATO
  • Publication number: 20150043630
    Abstract: An image decoding device and an image decoding method are disclosed. The decoding device includes: a variable length decoder to variable-length-decode an inputted encoded bit stream to obtain a parameter for prediction signal generation, a compressed difference image, and filters; and a filtering processor to carry out a filtering process on a decoded image acquired by adding a prediction image and a difference image, wherein the prediction image is generated by using the parameter for prediction signal generation, and the difference image is acquired by decoding the compressed difference image, wherein the variable length decoder variable-length-decodes class identification information for a block in the decoded image, and wherein the filtering processor refers to the class identification information for the block to determine a class for the block, and carries out a filtering process on the block based on the determined class and the filters.
    Type: Application
    Filed: October 15, 2014
    Publication date: February 12, 2015
    Applicant: Mitsubishi Electric Corporation
    Inventors: Akira MINEZAWA, Shunichi SEKIGUCHI, Kazuo SUGIMOTO, Yusuke ITANI, Yoshimi MORIYA, Norimichi HIWASA, Shuichi YAMAGISHI, Yoshihisa YAMADA, Yoshiaki KATO, Kohtaro ASAI, Tokumichi MURAKAMI
  • Patent number: 8948243
    Abstract: Disclosed is an image encoding device which is constructed in such a way as to include an encoding mode determining unit 4 for evaluating the degree of efficiency of encoding of a difference image A which is the difference between an image of a macroblock to be encoded, and a prediction image A generated by a motion-compensated prediction unit 2 in a motion prediction mode A, and also evaluating the degree of efficiency of encoding of a difference image B which is the difference between the image of the macroblock to be encoded, and a prediction image B generated by the motion-compensated prediction unit 2 in a motion prediction mode B, and for selecting a difference image having a higher degree of encoding efficiency.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: February 3, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shunichi Sekiguchi, Yusuke Itani, Kazuo Sugimoto, Yoshihisa Yamada
  • Publication number: 20150023420
    Abstract: A loop filter unit 11 carries out a class classification of a local decoded image generated by an adding unit 9 into one class for each coding block having a largest size determined by an encoding controlling unit 2 and also designs a filter that compensates for a distortion piggybacked for each local decoded image belonging to each class, and also carries out a filtering process on the above-mentioned local decoded image by using the filter. A variable length encoding unit 13 encodes, as filter parameters, the filter designed by the loop filter unit 11 and used for the local decoded image belonging to each class, and a class number of each largest coding block.
    Type: Application
    Filed: January 9, 2013
    Publication date: January 22, 2015
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Akira Minezawa, Kazuo Sugimoto, Kazuyuki Miyazawa, Yusuke Itani, Ryoji Hattori, Yoshimi Moriya, Norimichi Hiwasa, Shunichi Sekiguchi, Tokumichi Murakami
  • Patent number: 8934548
    Abstract: An image encoding device include a predicting unit for adaptively determining the size of each motion prediction unit block according to color component signals, and for dividing each motion prediction unit block into motion vector allocation regions to search for a motion vector, and a variable length encoding unit for, when a motion vector is allocated to the whole of each motion prediction unit block, performing encoding in mc_skip mode if the motion vector is equal to an estimated vector and a prediction error signal 5 does not exist, and for, when each motion vector allocation region has a size equal to or larger than a predetermined size and a motion vector is allocated to the whole of each motion vector allocation region, performing encoding in sub_mc_skip mode if the motion vector is equal to an estimated vector and a prediction error signal does not exist.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: January 13, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shunichi Sekiguchi, Kazuo Sugimoto, Yusuke Itani, Akira Minezawa, Yoshiaki Kato
  • Publication number: 20140376613
    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: Application
    Filed: February 28, 2013
    Publication date: December 25, 2014
    Inventors: Shunichi Sekiguchi, Kazuo Sugimoto, Yusuke Itani, Yoshihisa Yamada, Daiki Kudo, Hirofumi Nishikawa, Junichi Kitsuki, Koichi Takeuchi
  • Publication number: 20140247876
    Abstract: A tile partitioning unit 1 that partitions an inputted image into tiles each of which is a rectangular region having a specified size and outputs the tiles is disposed, and a block partitioning unit 10 of a partition video encoding unit 3 partitions a tile outputted from the tile partitioning unit 1 into coding blocks each having a predetermined size and also partitions each of the coding blocks hierarchically until the number of hierarchical layers reaches an upper limit on the number of hierarchical layers which is determined by an encoding controlling unit 2.
    Type: Application
    Filed: September 10, 2012
    Publication date: September 4, 2014
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yoshimi Moriya, Ryoji Hattori, Yusuke Itani, Kazuo Sugimoto, Akira Minezawa, Shunichi Sekiguchi, Norimichi Hiwasa
  • Publication number: 20140247875
    Abstract: A parallel processing starting unit 3 that partitions an inputted image into tiles each having a predetermined size, and distributes tiles obtained through the partitioning, and N tile encoding units 5-1 to 5-N each of that carries out a prediction difference encoding process on a tile distributed thereto by the parallel processing starting unit 3 to generate a local decoded image are disposed, and each of N tile loop filter units 7-1 to 7-N determines a filter per tile suitable for a filtering process on the local decoded image generated by the corresponding one of the tile encoding units 5-1 to 5-N, and carries out the filtering process on the local decoded image by using the filter.
    Type: Application
    Filed: October 10, 2012
    Publication date: September 4, 2014
    Inventors: Ryoji Hattori, Akira Minezawa, Yusuke Itani, Kazuo Sugimoto, Shunichi Sekiguchi, Yoshimi Moriya, Norimichi Hiwasa
  • Publication number: 20130343460
    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: Application
    Filed: June 11, 2012
    Publication date: December 26, 2013
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yusuke Itani, Shunichi Sekiguchi, Kazuo Sugimoto, Tokumichi Murakami
  • Publication number: 20130177076
    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: Application
    Filed: July 21, 2011
    Publication date: July 11, 2013
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yusuke Itani, Shunichi Sekiguchi, Kazuo Sugimoto