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).

  • Moving picture encoder and encoding method
    Patent number: 9225945
    Abstract: A moving picture encoder and encoding method for encoding a moving picture signal are disclosed. The moving picture encoder includes a plurality of reference picture memory areas, each area storing picture data of a reference picture to be used for prediction; and a prediction picture generator including a motion compensator that generates the predicted picture by using the picture data stored in the reference picture memory area, a parameter representing a motion between an image to be predicted and the reference picture and prediction mode information indicating a prediction mode corresponding to a prediction method used for generating a predicted picture, and a memory updater that controls a timing of updating the picture data of a full frame stored in the reference picture memory area; and a multiplexer that multiplexes an information representing memory update in a bitstream.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: December 29, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shunichi Sekiguchi, Kohtaro Asai, Tokumichi Murakami, Hirofumi Nishikawa, Shinichi Kuroda, Yoshimi Isu, Yuri Hasegawa
  • Image coding device, image decoding device, image coding method, and image decoding method
    Patent number: 9210426
    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: June 5, 2012
    Date of Patent: December 8, 2015
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shunichi Sekiguchi, Kazuo Sugimoto, Hiroharu Sakate, Tokumichi Murakami, Akira Minezawa
  • IMAGE CODING DEVICE, IMAGE DECODING DEVICE, IMAGE CODING METHOD, AND IMAGE DECODING METHOD
    Publication number: 20150319463
    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: May 8, 2015
    Publication date: November 5, 2015
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shunichi SEKIGUCHI, Kazuo SUGIMOTO, Hiroharu SAKATE, Tokumichi MURAKAMI, Akira MINEZAWA
  • IMAGE ENCODING DEVICE, IMAGE DECODING DEVICE, IMAGE ENCODING METHOD, AND IMAGE DECODING METHOD
    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
  • MOVING IMAGE ENCODING DEVICE, MOVING IMAGE DECODING DEVICE, MOVING IMAGE CODING METHOD, AND MOVING IMAGE DECODING METHOD
    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
  • VIDEO ENCODING DEVICE, VIDEO DECODING DEVICE, VIDEO ENCODING METHOD, AND VIDEO DECODING METHOD
    Publication number: 20150271502
    Abstract: A motion-compensated prediction unit 6 is configured in such a way as to, when the coding unit of a coding target picture differs from that of a reference picture, correct a reference vector held by a reference picture and derive a prediction vector from the corrected reference vector. As a result, application to the HEVC can be achieved even when the encoding based on a per frame basis and the encoding based on a per field basis coexist.
    Type: Application
    Filed: September 27, 2013
    Publication date: September 24, 2015
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Ryoji Hattori, Kazuo Sugimoto, Akira Minezawa, Shunichi Sekiguchi, Norimichi Hiwasa, Yoshimi Moriya
  • VIDEO ENCODING DEVICE, VIDEO DECODING DEVICE, VIDEO ENCODING METHOD, AND VIDEO DECODING METHOD
    Publication number: 20150256827
    Abstract: There is a problem that when performing field encoding on an interlaced signal, the space resolution in a vertical direction is reduced to one half and the correlation between pixels degrades, and, as a result, the prediction efficiency of intra prediction and the coding efficiency of orthogonal transformation coefficients degrade. In accordance with the present invention, there is provided an intra predictor that when a flag based on information showing whether or not field encoding is performed is valid, in case of a horizontal prediction, does not perform a filtering process on a prediction block at a time of performing an intra prediction process according to the horizontal prediction, but in case of a mean value prediction, performs a filtering process only on the left edge of the prediction block at a time of performing an intra prediction process according to the mean value prediction.
    Type: Application
    Filed: September 6, 2013
    Publication date: September 10, 2015
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Akira Minezawa, Kazuo Sugimoto, Shunichi Sekiguchi
  • MOVING IMAGE ENCODING DEVICE, MOVING IMAGE DECODING DEVICE, MOVING IMAGE CODING METHOD, AND MOVING IMAGE DECODING METHOD
    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
  • MOVING IMAGE ENCODING DEVICE, MOVING IMAGE DECODING DEVICE, MOVING IMAGE CODING METHOD, AND MOVING IMAGE DECODING METHOD
    Publication number: 20150245022
    Abstract: When carrying out an intra-frame prediction process to generate an intra prediction image by using an already-encoded image signal in a frame, an intra prediction part 4 selects a filter from one or more filters which are prepared in advance according to the states of various parameters associated with the encoding of a target block to be filtered, and carries out a filtering process on a prediction image by using the filter. As a result, prediction errors which occur locally can be reduced, and the image quality can be improved.
    Type: Application
    Filed: February 27, 2015
    Publication date: August 27, 2015
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Akira MINEZAWA, Shunichi SEKIGUCHI, Kazuo SUGIMOTO
  • MOVING IMAGE ENCODING DEVICE, MOVING IMAGE DECODING DEVICE, MOVING IMAGE CODING METHOD, AND MOVING IMAGE DECODING METHOD
    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
  • MOVING IMAGE ENCODING DEVICE, MOVING IMAGE DECODING DEVICE, MOVING IMAGE CODING METHOD, AND MOVING IMAGE DECODING METHOD
    Publication number: 20150245023
    Abstract: When carrying out an intra-frame prediction process to generate an intra prediction image by using an already-encoded image signal in a frame, an intra prediction part 4 selects a filter from one or more filters which are prepared in advance according to the states of various parameters associated with the encoding of a target block to be filtered, and carries out a filtering process on a prediction image by using the filter. As a result, prediction errors which occur locally can be reduced, and the image quality can be improved.
    Type: Application
    Filed: February 27, 2015
    Publication date: August 27, 2015
    Applicant: Mitsubishi Electric Corporation
    Inventors: Akira MINEZAWA, Shunichi SEKIGUCHI, Kazuo SUGIMOTO
  • MOVING IMAGE ENCODING DEVICE, MOVING IMAGE DECODING DEVICE, MOVING IMAGE CODING METHOD, AND MOVING IMAGE DECODING METHOD
    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
  • MOVING IMAGE ENCODING DEVICE, MOVING IMAGE DECODING DEVICE, MOVING IMAGE CODING METHOD, AND MOVING IMAGE DECODING METHOD
    Publication number: 20150237379
    Abstract: When carrying out an intra-frame prediction process to generate an intra prediction image by using an already-encoded image signal in a frame, an intra prediction part 4 selects a filter from one or more filters which are prepared in advance according to the states of various parameters associated with the encoding of a target block to be filtered, and carries out a filtering process on a prediction image by using the filter. As a result, prediction errors which occur locally can be reduced, and the image quality can be improved.
    Type: Application
    Filed: February 27, 2015
    Publication date: August 20, 2015
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Akira MINEZAWA, Shunichi SEKIGUCHI, Kazuo SUGIMOTO
  • IMAGE ENCODING DEVICE, IMAGE DECODING DEVICE, IMAGE ENCODING METHOD, AND IMAGE DECODING METHOD
    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
  • IMAGE ENCODING DEVICE, IMAGE DECODING DEVICE, IMAGE ENCODING METHOD, AND IMAGE DECODING METHOD
    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
  • MOVING IMAGE CODING APPARATUS AND MOVING IMAGE DECODING APPARATUS
    Publication number: 20150201195
    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: Application
    Filed: March 24, 2015
    Publication date: July 16, 2015
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yoshimi MORIYA, Shunichi SEKIGUCHI, Yoshihisa YAMADA, Kohtaro ASAI
  • VIDEO ENCODING DEVICE, VIDEO DECODING DEVICE, VIDEO ENCODING METHOD, AND VIDEO DECODING METHOD
    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
  • MOVING IMAGE ENCODING DEVICE, MOVING IMAGE DECODING DEVICE, MOVING IMAGE CODING METHOD, AND MOVING IMAGE DECODING METHOD
    Publication number: 20150172724
    Abstract: When carrying out an intra-frame prediction process to generate an intra prediction image by using an already-encoded image signal in a frame, an intra prediction part 4 selects a filter from one or more filters which are prepared in advance according to the states of various parameters associated with the encoding of a target block to be filtered, and carries out a filtering process on a prediction image by using the filter. As a result, prediction errors which occur locally can be reduced, and the image quality can be improved.
    Type: Application
    Filed: February 27, 2015
    Publication date: June 18, 2015
    Applicant: Mitsubishi Electric Corporation
    Inventors: Akira MINEZAWA, Shunichi SEKIGUCHI, Kazuo SUGIMOTO
  • Moving image coding apparatus and moving image decoding apparatus
    Patent number: 9060157
    Abstract: An apparatus to decode an encoded bit stream obtained by dividing the moving image into a plurality of rectangular regions includes a rectangular region size determination unit for determining a variable size of the regions in a sequence (a set of continuous frames) based on region size information multiplexed in the encoded bit stream. The apparatus includes a decoding unit for decoding coding mode information multiplexed in the encoded bit stream for each of the regions, and a decoding unit. The coding mode information includes (1) prediction type information selected from information indicating either inter or intra prediction coding, and (2) intra prediction block size information indicating a size of a unit region for the intra prediction coding indicated by the prediction type information.
    Type: Grant
    Filed: June 14, 2013
    Date of Patent: June 16, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yoshimi Moriya, Shunichi Sekiguchi, Yoshihisa Yamada, Kohtaro Asai
  • MOVING IMAGE CODING APPARATUS AND MOVING IMAGE DECODING APPARATUS
    Publication number: 20150146777
    Abstract: A macro block size determining unit 1 determines the size of each macro block on a frame-by-frame basis. A macro block dividing unit 2 divides an inputted image into macro blocks each having the size determined by the macro block size determining unit 1. A macro block coding unit 3 determines a coding mode for each of the macro blocks divided by the macro block dividing unit 2, and codes pixel values in each of the macro blocks in the determined coding mode.
    Type: Application
    Filed: January 30, 2015
    Publication date: May 28, 2015
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yoshimi MORIYA, Shunichi SEKIGUCHI, Yoshihisa YAMADA, Kohtaro ASAI