Patents by Inventor Shuichi Yamagishi

Shuichi Yamagishi 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).

  • 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: 8422803
    Abstract: An encoding device includes a color component separating unit for separating an input bit stream for the respective color components, a block dividing unit for dividing an input color component signal into blocks to generate a signal of an encoding unit area, a predicted image generating unit for generating a predicted image for the signal, a determining unit for determining a prediction mode used for encoding according to a prediction efficiency of the predicted image, a prediction error encoding unit for encoding a difference between the predicted image corresponding to the prediction mode determined by the determining unit and the input color component signal, and an encoding unit for variable length-coding the prediction mode, an output from the prediction error encoding unit, and a color component identification flag indicating the color component to which the input bit stream belongs as a result of the color component separation.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: April 16, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shunichi Sekiguchi, Shuichi Yamagishi, Yoshimi Moriya, Yoshihisa Yamada, Kohtaro Asai, Tokumichi Murakami, Yuichi Idehara
  • Patent number: 8345968
    Abstract: An encoding device includes a color component separating unit for separating an input bit stream for the respective color components, a block dividing unit for dividing an input color component signal into blocks to generate a signal of an encoding unit area, a predicted image generating unit for generating a predicted image for the signal, a determining unit for determining a prediction mode used for encoding according to a prediction efficiency of the predicted image, a prediction error encoding unit for encoding a difference between the predicted image corresponding to the prediction mode determined by the determining unit and the input color component signal, and an encoding unit for variable length-coding the prediction mode, an output from the prediction error encoding unit, and a color component identification flag indicating the color component to which the input bit stream belongs as a result of the color component separation.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: January 1, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shunichi Sekiguchi, Shuichi Yamagishi, Yoshimi Moriya, Yoshihisa Yamada, Kohtaro Asai, Tokumichi Murakami, Yuichi Idehara
  • Publication number: 20120093427
    Abstract: A quantizing matrix selecting part 3 for calculating the average and variance of brightness values in a prediction image created by a motion-compensated prediction unit 1, and selecting a quantizing matrix corresponding to the average and variance of brightness values in the prediction image from among a plurality of quantizing matrices which are prepared in advance is disposed, and a quantizing part 6 quantizes orthogonal transformation coefficients outputted from an orthogonal transformation part 5 with reference to the quantizing matrix selected by the quantizing matrix selecting part 3.
    Type: Application
    Filed: May 25, 2010
    Publication date: April 19, 2012
    Inventors: Yusuke Itani, Kazuo Sugimoto, Shunichi Sekiguchi, Akira Minezawa, Yoshimi Moriya, Norimichi Hiwasa, Shuichi Yamagishi, Yoshihisa Yamada, Yoshiaki Kato, Kohtaro Asai, Tokumichi Murakami
  • Publication number: 20120087595
    Abstract: A loop filter 6 includes a region classifying unit 12 for extracting a feature quantity of each of the regions which construct a local decoded image to classify each of the regions into the class to which the region belongs according to the feature quantity, and a filter designing and processing unit 13 for, for each class to which one or more regions, among the regions which construct the local decoded image, belong, generating a Wiener filter which minimizes an error occurring between an inputted image and the local decoded image in each of the one or more regions belonging to the class to compensate for a distortion superimposed onto the one or more regions by using the Wiener filter.
    Type: Application
    Filed: May 25, 2010
    Publication date: April 12, 2012
    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
  • Publication number: 20120076203
    Abstract: A compressing unit 6 of a video encoding device selects whether or not to transform and quantize a prediction error signal 5 after a downsampling processing unit 36 performs a reduction transformation on the prediction error signal 5 by using a transforming process determining unit 31, and then creates quantization coefficient data 7a or 7b. When the compressing unit creates the quantization coefficient data 7b, a local decoding unit located behind the compressing unit inverse-quantizes and inverse-transforms the quantization coefficient data 7b, and, after that, an upsampling processing unit performs an enlargement transformation on the quantization coefficient data to create a decoded prediction error signal.
    Type: Application
    Filed: May 27, 2010
    Publication date: March 29, 2012
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kazuo Sugimoto, Shunichi Sekiguchi, Yusuke Itani, Akira Minezawa, Shuichi Yamagishi
  • Patent number: 8145002
    Abstract: An encoding device includes a color component separating unit for separating an input bit stream for the respective color components, a block dividing unit for dividing an input color component signal into blocks to generate a signal of an encoding unit area, a predicted image generating unit for generating a predicted image for the signal, a determining unit for determining a prediction mode used for encoding according to a prediction efficiency of the predicted image, a prediction error encoding unit for encoding a difference between the predicted image corresponding to the prediction mode determined by the determining unit and the input color component signal, and an encoding unit for variable length-coding the prediction mode, an output from the prediction error encoding unit, and a color component identification flag indicating the color component to which the input bit stream belongs as a result of the color component separation.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: March 27, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shunichi Sekiguchi, Shuichi Yamagishi, Yoshimi Moriya, Yoshihisa Yamada, Kohtaro Asai, Tokumichi Murakami, Yuichi Idehara
  • Patent number: 8139875
    Abstract: An encoding device includes a color component separating unit for separating an input bit stream for the respective color components, a block dividing unit for dividing an input color component signal into blocks to generate a signal of an encoding unit area, a predicted image generating unit for generating a predicted image for the signal, a determining unit for determining a prediction mode used for encoding according to a prediction efficiency of the predicted image, a prediction error encoding unit for encoding a difference between the predicted image corresponding to the prediction mode determined by the determining unit and the input color component signal, and an encoding unit for variable length-coding the prediction mode, an output from the prediction error encoding unit, and a color component identification flag indicating the color component to which the input bit stream belongs as a result of the color component separation.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: March 20, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shunichi Sekiguchi, Shuichi Yamagishi, Yoshimi Moriya, Yoshihisa Yamada, Kohtaro Asai, Tokumichi Murakami, Yuichi Idehara
  • Patent number: 7991237
    Abstract: An encoding device includes a color component separating unit for separating an input bit stream for the respective color components, a block dividing unit for dividing an input color component signal into blocks to generate a signal of an encoding unit area, a predicted image generating unit for generating a predicted image for the signal, a determining unit for determining a prediction mode used for encoding according to a prediction efficiency of the predicted image, a prediction error encoding unit for encoding a difference between the predicted image corresponding to the prediction mode determined by the determining unit and the input color component signal, and an encoding unit for variable length-coding the prediction mode, an output from the prediction error encoding unit, and a color component identification flag indicating the color component to which the input bit stream belongs as a result of the color component separation.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: August 2, 2011
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shunichi Sekiguchi, Shuichi Yamagishi, Yoshimi Moriya, Yoshihisa Yamada, Kohtaro Asai, Tokumichi Murakami, Yuichi Idehara
  • Publication number: 20110129016
    Abstract: Provided are a device and a method for efficiently compressing information by performing improved removal of signal correlations according to statistical and local properties of a video signal in a 4:4:4 format which is to be encoded. The device includes: a prediction unit for determining, for each color component, a motion prediction mode exhibiting a highest efficiency among a plurality of motion prediction modes, and detecting a motion vector corresponding to the determined motion prediction mode, to thereby perform output; and a variable-length encoding unit for determining, when performing arithmetic coding on the motion prediction mode of the each color component, an occurrence probability of a value of the motion prediction mode of the each color component based on a motion prediction mode selected in a spatially-adjacent unit region and a motion prediction mode selected in a temporally-adjacent unit region, to thereby perform the arithmetic coding.
    Type: Application
    Filed: July 3, 2009
    Publication date: June 2, 2011
    Inventors: Shunichi Sekiguchi, Shuichi Yamagishi, Yusuke Itani, Yoshihisa Yamada, Yoshiaki Kato, Kohtaro Asai, Tokumichi Murakami
  • Publication number: 20090110067
    Abstract: An encoding device includes a color component separating unit for separating an input bit stream for the respective color components, a block dividing unit for dividing an input color component signal into blocks to generate a signal of an encoding unit area, a predicted image generating unit for generating a predicted image for the signal, a determining unit for determining a prediction mode used for encoding according to a prediction efficiency of the predicted image, a prediction error encoding unit for encoding a difference between the predicted image corresponding to the prediction mode determined by the determining unit and the input color component signal, and an encoding unit for variable length-coding the prediction mode, an output from the prediction error encoding unit, and a color component identification flag indicating the color component to which the input bit stream belongs as a result of the color component separation.
    Type: Application
    Filed: October 30, 2007
    Publication date: April 30, 2009
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shunichi SEKIGUCHI, Shuichi YAMAGISHI, Yoshimi MORIYA, Yoshihisa YAMADA, Kohtaro ASAI, Tokumichi MURAKAMI, Yuichi IDEHARA
  • Publication number: 20090003717
    Abstract: An encoding device includes a color component separating unit for separating an input bit stream for the respective color components, a block dividing unit for dividing an input color component signal into blocks to generate a signal of an encoding unit area, a predicted image generating unit for generating a predicted image for the signal, a determining unit for determining a prediction mode used for encoding according to a prediction efficiency of the predicted image, a prediction error encoding unit for encoding a difference between the predicted image corresponding to the prediction mode determined by the determining unit and the input color component signal, and an encoding unit for variable length-coding the prediction mode, an output from the prediction error encoding unit, and a color component identification flag indicating the color component to which the input bit stream belongs as a result of the color component separation.
    Type: Application
    Filed: October 30, 2007
    Publication date: January 1, 2009
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shunichi Sekiguchi, Shuichi Yamagishi, Yoshimi Moriya, Yoshihisa Yamada, Kohtaro Asai, Tokumichi Murakami, Yuichi Idehara
  • Publication number: 20090003449
    Abstract: An encoding device includes a color component separating unit for separating an input bit stream for the respective color components, a block dividing unit for dividing an input color component signal into blocks to generate a signal of an encoding unit area, a predicted image generating unit for generating a predicted image for the signal, a determining unit for determining a prediction mode used for encoding according to a prediction efficiency of the predicted image, a prediction error encoding unit for encoding a difference between the predicted image corresponding to the prediction mode determined by the determining unit and the input color component signal, and an encoding unit for variable length-coding the prediction mode, an output from the prediction error encoding unit, and a color component identification flag indicating the color component to which the input bit stream belongs as a result of the color component separation.
    Type: Application
    Filed: October 30, 2007
    Publication date: January 1, 2009
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shunichi Sekiguchi, Shuichi Yamagishi, Yoshimi Moriya, Yoshihisa Yamada, Kohtaro Asai, Tokumichi Murakami, Yuichi Idehara
  • Publication number: 20090003448
    Abstract: An encoding device includes a color component separating unit for separating an input bit stream for the respective color components, a block dividing unit for dividing an input color component signal into blocks to generate a signal of an encoding unit area, a predicted image generating unit for generating a predicted image for the signal, a determining unit for determining a prediction mode used for encoding according to a prediction efficiency of the predicted image, a prediction error encoding unit for encoding a difference between the predicted image corresponding to the prediction mode determined by the determining unit and the input color component signal, and an encoding unit for variable length-coding the prediction mode, an output from the prediction error encoding unit, and a color component identification flag indicating the color component to which the input bit stream belongs as a result of the color component separation.
    Type: Application
    Filed: October 30, 2007
    Publication date: January 1, 2009
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shunichi Sekiguchi, Shuichi Yamagishi, Yoshimi Moriya, Yoshihisa Yamada, Kohtaro Asai, Tokumichi Murakami, Yuichi Idehara
  • Publication number: 20090003441
    Abstract: An encoding device includes a color component separating unit for separating an input bit stream for the respective color components, a block dividing unit for dividing an input color component signal into blocks to generate a signal of an encoding unit area, a predicted image generating unit for generating a predicted image for the signal, a determining unit for determining a prediction mode used for encoding according to a prediction efficiency of the predicted image, a prediction error encoding unit for encoding a difference between the predicted image corresponding to the prediction mode determined by the determining unit and the input color component signal, and an encoding unit for variable length-coding the prediction mode, an output from the prediction error encoding unit, and a color component identification flag indicating the color component to which the input bit stream belongs as a result of the color component separation.
    Type: Application
    Filed: October 30, 2007
    Publication date: January 1, 2009
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shunichi SEKIGUCHI, Shuichi YAMAGISHI, Yoshimi MORIYA, Yoshihisa YAMADA, Kohtaro ASAI, Tokumichi MURAKAMI, Yuichi IDEHARA
  • Publication number: 20090003716
    Abstract: An encoding device includes a color component separating unit for separating an input bit stream for the respective color components, a block dividing unit for dividing an input color component signal into blocks to generate a signal of an encoding unit area, a predicted image generating unit for generating a predicted image for the signal, a determining unit for determining a prediction mode used for encoding according to a prediction efficiency of the predicted image, a prediction error encoding unit for encoding a difference between the predicted image corresponding to the prediction mode determined by the determining unit and the input color component signal, and an encoding unit for variable length-coding the prediction mode, an output from the prediction error encoding unit, and a color component identification flag indicating the color component to which the input bit stream belongs as a result of the color component separation.
    Type: Application
    Filed: October 30, 2007
    Publication date: January 1, 2009
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shunichi Sekiguchi, Shuichi Yamagishi, Yoshimi Moriya, Yoshihisa Yamada, Kohtaro Asai, Tokumichi Murakami, Yuichi Idehara