Patents by Inventor Akira Minezawa

Akira Minezawa 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: 11006125
    Abstract: An image decoding device including an intra prediction unit for, when a coding mode for a coding block is an intra coding mode, carrying out an intra-frame prediction process on each of processing blocks to generate a prediction image, each of the processing blocks being the coding block or a sub-block obtained by dividing the coding block, wherein, when an intra prediction parameter indicates a vertical prediction process and a size of the processing block is less than a predetermined size, the intra prediction unit performs a specific processing and when the intra prediction parameter indicates the vertical prediction process and the size of the processing block is greater than or equal to the predetermined size, the intra prediction unit performs a specific processing.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: May 11, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Akira Minezawa, Kazuo Sugimoto, Shunichi Sekiguchi
  • Patent number: 10943141
    Abstract: An image feature map generating unit (3) generates, on the basis of feature amounts extracted from a plurality of images successively captured by a camera (109), an image feature map which is an estimated distribution of the object likelihood on each of the images. An object detecting unit (4) detects an object on the basis of the image feature map generated by the image feature map generating unit (3).
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: March 9, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Tomoya Sawada, Hidetoshi Mishima, Hideaki Maehara, Yoshimi Moriya, Kazuyuki Miyazawa, Akira Minezawa, Momoyo Hino, Mengxiong Wang, Naohiro Shibuya
  • Patent number: 10931946
    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 left 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 left side of the target pixel at the left 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 20, 2018
    Date of Patent: February 23, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Akira Minezawa, Kazuo Sugimoto, Shunichi Sekiguchi
  • Publication number: 20210044806
    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: October 29, 2020
    Publication date: February 11, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Shunichi SEKIGUCHI, Kazuo SUGIMOTO, Hiroharu SAKATE, Tokumichi MURAKAMI, Akira MINEZAWA
  • Patent number: 10863180
    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: April 30, 2019
    Date of Patent: December 8, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shunichi Sekiguchi, Kazuo Sugimoto, Hiroharu Sakate, Tokumichi Murakami, Akira Minezawa
  • Publication number: 20200296361
    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: June 2, 2020
    Publication date: September 17, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Ryoji HATTORI, Akira MINEZAWA, Yusuke ITANI, Kazuo SUGIMOTO, Shunichi SEKIGUCHI, Yoshimi MORIYA, Norimichi HIWASA
  • Patent number: 10708586
    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: Grant
    Filed: November 19, 2019
    Date of Patent: July 7, 2020
    Assignee: MITSUBISHI ELECTRONIC CORPORATION
    Inventors: Ryoji Hattori, Akira Minezawa, Yusuke Itani, Kazuo Sugimoto, Shunichi Sekiguchi, Yoshimi Moriya, Norimichi Hiwasa
  • Publication number: 20200184318
    Abstract: A data processing unit (101) processes input data using a neural network. A compression controlling unit (102) generates quantization information that defines quantization steps. An encoding unit (103) encodes network configuration information including parameter data which is quantized using the quantization steps determined by the compression controlling unit (102), and the quantization information, to generate compressed data.
    Type: Application
    Filed: July 7, 2017
    Publication date: June 11, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Akira MINEZAWA, Yoshimi MORIYA, Mengxiong WANG, Kazuo SUGIMOTO
  • Patent number: 10643338
    Abstract: An object detection device includes: an optical flow calculator to calculate an optical flow between images captured by the image capturer at different times; an evaluation value calculator to divide the image captured by the image capturer into areas, and calculate, for each divided area, an evaluation value by using the optical flows of pixels belonging to the divided area, the evaluation value indicating a measure of a possibility that the divided area is an object area representing part or whole of the object to be detected; and an area determinator to determine an area in an image, in which the object to be detected exists, by comparing the evaluation value of each divided area calculated by the evaluation value calculator with a threshold value.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: May 5, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kazuyuki Miyazawa, Shunichi Sekiguchi, Hideaki Maehara, Yoshimi Moriya, Akira Minezawa, Ryoji Hattori, Momoyo Nagase, Tomoya Sawada
  • Publication number: 20200092549
    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: November 19, 2019
    Publication date: March 19, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Ryoji HATTORI, Akira MINEZAWA, Yusuke ITANI, Kazuo SUGIMOTO, Shunichi SEKIGUCHI, Yoshimi MORIYA, Norimichi HIWASA
  • Publication number: 20200068204
    Abstract: An image decoding device including an intra prediction unit for, when a coding mode for a coding block is an intra coding mode, carrying out an intra-frame prediction process on each of processing blocks to generate a prediction image, each of the processing blocks being the coding block or a sub-block obtained by dividing the coding block, wherein, when an intra prediction parameter indicates a vertical prediction process and a size of the processing block is less than a predetermined size, the intra prediction unit performs a specific processing and when the intra prediction parameter indicates the vertical prediction process and the size of the processing block is greater than or equal to the predetermined size, the intra prediction unit performs a specific processing.
    Type: Application
    Filed: October 18, 2019
    Publication date: February 27, 2020
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Akira MINEZAWA, Kazuo SUGIMOTO, Shunichi SEKIGUCHI
  • Publication number: 20200013172
    Abstract: A congestion degree estimating unit (12) which estimates, for each image frame, a congestion degree of an area in which each object detected by an object detecting unit (11) is present is provided. An object selecting unit (13) refers to an estimation result of the congestion degree by the congestion degree estimating unit (12) for each image frame, and selects an object present in an area the congestion degree of which is equal to or lower than a first threshold out of one or more objects detected by the object detecting unit (11).
    Type: Application
    Filed: March 6, 2017
    Publication date: January 9, 2020
    Applicant: Mitsubishi Electric Corporation
    Inventors: Naohiro SHIBUYA, Yoshimi MORIYA, Kazuo SUGIMOTO, Akira MINEZAWA, Mengxiong WANG
  • Patent number: 10523935
    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: Grant
    Filed: January 25, 2018
    Date of Patent: December 31, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Ryoji Hattori, Akira Minezawa, Yusuke Itani, Kazuo Sugimoto, Shunichi Sekiguchi, Yoshimi Moriya, Norimichi Hiwasa
  • Patent number: 10511840
    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: August 3, 2018
    Date of Patent: December 17, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Akira Minezawa, Kazuo Sugimoto, Shunichi Sekiguchi
  • Publication number: 20190261002
    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 30, 2019
    Publication date: August 22, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Shunichi SEKIGUCHI, Kazuo SUGIMOTO, Hiroharu SAKATE, Tokumichi MURAKAMI, Akira MINEZAWA
  • Publication number: 20190197345
    Abstract: An image feature map generating unit (3) generates, on the basis of feature amounts extracted from a plurality of images successively captured by a camera (109), an image feature map which is an estimated distribution of the object likelihood on each of the images. An object detecting unit (4) detects an object on the basis of the image feature map generated by the image feature map generating unit (3).
    Type: Application
    Filed: September 15, 2016
    Publication date: June 27, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Tomoya SAWADA, Hidetoshi MISHIMA, Hideaki MAEHARA, Yoshimi MORIYA, Kazuyuki MIYAZAWA, Akira MINEZAWA, Momoyo HINO, Mengxiong WANG, Naohiro SHIBUYA
  • Publication number: 20190193659
    Abstract: An information processing unit (32) collects accident information from a vehicle-mounted device (2) existing in a periphery of a site of an accident indicated by accident information stored in a storage unit (31), by controlling a communication unit (30).
    Type: Application
    Filed: July 7, 2016
    Publication date: June 27, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Kazuyuki MIYAZAWA, Shunichi SEKIGUCHI, Hideaki MAEHARA, Yoshimi MORIYA, Akira MINEZAWA, Ryoji HATTORI, Momoyo HINO, Tomoya SAWADA, Naohiro SHIBUYA
  • Patent number: 10334251
    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: January 11, 2018
    Date of Patent: June 25, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shunichi Sekiguchi, Kazuo Sugimoto, Hiroharu Sakate, Tokumichi Murakami, Akira Minezawa
  • Patent number: 10291939
    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: Grant
    Filed: July 21, 2011
    Date of Patent: May 14, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Akira Minezawa, Shunichi Sekiguchi, Kazuo Sugimoto
  • Publication number: 20190124328
    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 left 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 left side of the target pixel at the left end of the block. As a result, prediction errors locally occurring can be reduced, and the image quality can be improved.
    Type: Application
    Filed: December 20, 2018
    Publication date: April 25, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Akira MINEZAWA, Kazuo SUGIMOTO, Shunichi SEKIGUCHI