Patents by Inventor Tomokazu Murakami

Tomokazu Murakami 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: 10977515
    Abstract: An image retrieving apparatus includes a pose estimating unit which recognizes pose information of a retrieval target including a plurality of feature points from an input image, a features extracting unit which extracts features from the pose information and the input image, an image database which accumulates the features in association with the input image, a query generating unit which generates a retrieval query from pose information specified by a user, and an image retrieving unit which retrieves images including similar poses according to the retrieval query from the image database.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: April 13, 2021
    Assignee: HITACHI, LTD.
    Inventors: Yuki Watanabe, Kenichi Morita, Tomokazu Murakami, Atsushi Hiroike, Quan Kong
  • Publication number: 20200380168
    Abstract: In a case of receiving an access request to a target image, an image access management device can provide an appropriate access right holder with an appropriate range of information by determining a browsing level with respect to the target image according to an access authority or purpose included in the access request to the target image, by an access management unit, by generating a final image that corresponds to the access authority by processing the feature vector according to the browsing level, and providing the generated final image as a response to the access request, by an image generation unit.
    Type: Application
    Filed: May 20, 2020
    Publication date: December 3, 2020
    Inventors: Martin KLINKIGT, Mohit CHHABRA, Atsushi HIROIKE, Tomokazu MURAKAMI
  • Publication number: 20200336759
    Abstract: For the purpose of providing an image encoding technique for reducing the amount of codes, in inter prediction in which motion search is performed by using a block obtained by dividing an input image and a reference image, the motion vector of the block is predicted by selecting from the motion vectors of the surrounding blocks. Further, in the method of calculating a differential vector and then performing encoding, the number or positions of candidate blocks from which a prediction vector is selected are changed block by block or frame by frame and thereby adaptive and efficient video image compression is performed.
    Type: Application
    Filed: July 6, 2020
    Publication date: October 22, 2020
    Inventors: Tomokazu MURAKAMI, Toru YOKOYAMA
  • Publication number: 20200311575
    Abstract: The online recognition apparatus includes a feature amount extraction unit that extracts a feature amount of input data, an identification result prediction unit that predicts an identification result based on the extracted feature amount, a prediction result evaluation unit that determines necessity of labeling from the predicted identification result unit, a correct answer assigning unit that assigns a correct answer to input data online from the determination result, a generator update unit that updates a parameter of a generator based on the input data with the correct answer, a pseudo-learning data generation unit that establishes a generator based on the parameter of the updated generator and generates pseudo-learning data, and an identifier update unit that online updates a parameter of an identifier prepared in advance based on the input data with the correct answer and the pseudo-learning data. The updated identifier is updated as a new identification result prediction unit.
    Type: Application
    Filed: August 9, 2018
    Publication date: October 1, 2020
    Inventors: Quan KONG, Yuki WATANABE, Naoto AKIRA, Tomokazu MURAKAMI
  • Publication number: 20200302173
    Abstract: In a current image processing environment, providing feedback for a user operation is slow, and a user cannot confirm the result of the operation in real time. Thus, the user interrupts the operation every time the user confirms the feedback, and a time period for performing image processing is long. An image processing device includes a guidance information generator. The guidance information generator acquires trajectory information to be used to segment an image object on an image input from a user, generates guidance information indicating a segmentation region desired by the user based on the trajectory information, and presents the segmentation region based on a user's intention in real-time. The guidance information generator provides a function of smoothly continuously segmenting an image object.
    Type: Application
    Filed: February 24, 2020
    Publication date: September 24, 2020
    Applicant: Hitachi, Ltd.
    Inventors: Ziwei Deng, Quan Kong, Naoto Akira, Tomokazu Murakami
  • Patent number: 10743020
    Abstract: For the purpose of providing an image encoding technique for reducing the amount of codes, in inter prediction in which motion search is performed by using a block obtained by dividing an input image and a reference image, the motion vector of the block is predicted by selecting from the motion vectors of the surrounding blocks. Further, in the method of calculating a differential vector and then performing encoding, the number or positions of candidate blocks from which a prediction vector is selected are changed block by block or frame by frame and thereby adaptive and efficient video image compression is performed.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: August 11, 2020
    Assignee: MAXELL, LTD.
    Inventors: Tomokazu Murakami, Toru Yokoyama
  • Publication number: 20200065324
    Abstract: The invention is directed to an image search device including a search condition input unit that receives a search condition for searching for an image, a query generation unit that generates a first query based on the search condition, an image search unit that searches for an image in a database based on the first query, a relevance estimation unit that estimates relevance between a plurality of images selected by a predetermined operation among images hit by a search, a query correction unit that generates a second query based on the relevance between the plurality of images, and a function of displaying the second query generated by the query correction unit on an interface.
    Type: Application
    Filed: December 28, 2017
    Publication date: February 27, 2020
    Applicant: HITACHI, LTD.
    Inventors: Yuki Watanabe, Kenichi Morita, Qingzhu Duan, Atsushi Hiroike, Tomokazu Murakami
  • Publication number: 20190354806
    Abstract: Aspects of the disclosure relate to a method for discovering latent factors from data in a neural network environment. Aspects include adding, by a data noise unit of the neural network environment, noise to a set of input data; computing, by the encoder model and a set of stochastic non-linear units, a set of latent code based on the set of input data; obtaining, by decoding the latent code with a decoder model, a set of reconstructed data.
    Type: Application
    Filed: April 19, 2019
    Publication date: November 21, 2019
    Inventors: Mohit CHHABRA, Martin KLINKIGT, Tomokazu MURAKAMI
  • Publication number: 20190200035
    Abstract: For the purpose of providing an image encoding technique for reducing the amount of codes, in inter prediction in which motion search is performed by using a block obtained by dividing an input image and a reference image, the motion vector of the block is predicted by selecting from the motion vectors of the surrounding blocks. Further, in the method of calculating a differential vector and then performing encoding, the number or positions of candidate blocks from which a prediction vector is selected are changed block by block or frame by frame and thereby adaptive and efficient video image compression is performed.
    Type: Application
    Filed: March 4, 2019
    Publication date: June 27, 2019
    Inventors: Tomokazu MURAKAMI, Toru YOKOYAMA
  • Publication number: 20190147292
    Abstract: An image retrieving apparatus includes a pose estimating unit which recognizes pose information of a retrieval target including a plurality of feature points from an input image, a features extracting unit which extracts features from the pose information and the input image, an image database which accumulates the features in association with the input image, a query generating unit which generates a retrieval query from pose information specified by a user, and an image retrieving unit which retrieves images including similar poses according to the retrieval query from the image database.
    Type: Application
    Filed: October 26, 2018
    Publication date: May 16, 2019
    Inventors: Yuki WATANABE, Kenichi MORITA, Tomokazu MURAKAMI, Atsushi HIROIKE, Quan KONG
  • Patent number: 10271065
    Abstract: For the purpose of providing an image encoding technique for reducing the amount of codes, in inter prediction in which motion search is performed by using a block obtained by dividing an input image and a reference image, the motion vector of the block is predicted by selecting from the motion vectors of the surrounding blocks. Further, in the method of calculating a differential vector and then performing encoding, the number or positions of candidate blocks from which a prediction vector is selected are changed block by block or frame by frame and thereby adaptive and efficient video image compression is performed.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: April 23, 2019
    Assignee: Maxell, Ltd.
    Inventors: Tomokazu Murakami, Toru Yokoyama
  • Publication number: 20170318307
    Abstract: For the purpose of providing an image encoding technique for reducing the amount of codes, in inter prediction in which motion search is performed by using a block obtained by dividing an input image and a reference image, the motion vector of the block is predicted by selecting from the motion vectors of the surrounding blocks. Further, in the method of calculating a differential vector and then performing encoding, the number or positions of candidate blocks from which a prediction vector is selected are changed block by block or frame by frame and thereby adaptive and efficient video image compression is performed.
    Type: Application
    Filed: July 19, 2017
    Publication date: November 2, 2017
    Inventors: Tomokazu MURAKAMI, Toru YOKOYAMA
  • Patent number: 9781415
    Abstract: For the purpose of providing an image encoding technique for reducing the amount of codes, in inter prediction in which motion search is performed by using a block obtained by dividing an input image and a reference image, the motion vector of the block is predicted by selecting from the motion vectors of the surrounding blocks. Further, in the method of calculating a differential vector and then performing encoding, the number or positions of candidate blocks from which a prediction vector is selected are changed block by block or frame by frame and thereby adaptive and efficient video image compression is performed.
    Type: Grant
    Filed: January 16, 2012
    Date of Patent: October 3, 2017
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Tomokazu Murakami, Toru Yokoyama
  • Patent number: 9706202
    Abstract: The present invention provides an image encoding/decoding technique that is capable of achieving the higher compression efficiency. An image encoding method comprises: an intra prediction step which performs intra prediction on a block basis to generate a predicted image; a subtraction step which calculates the difference in prediction between the predicted image generated by the intra prediction step and an original image; a frequency conversion step which performs frequency conversion processing for the difference in prediction; a quantization step which subjects the output of the frequency conversion step to quantization processing; and a variable-length encoding step which subjects the output of the quantization step to variable-length encoding processing; wherein the intra prediction encoding step predicts a target pixel to be encoded by use of pixel values of two reference pixels between which the target pixel to be encoded is located.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: July 11, 2017
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Masashi Takahashi, Tomokazu Murakami
  • Patent number: 9699458
    Abstract: The present invention provides an image encoding/decoding technique that is capable of achieving the higher compression efficiency. An image encoding method comprises: an intra prediction step which performs intra prediction on a block basis to generate a predicted image; a subtraction step which calculates the difference in prediction between the predicted image generated by the intra prediction step and an original image; a frequency conversion step which performs frequency conversion processing for the difference in prediction; a quantization step which subjects the output of the frequency conversion step to quantization processing; and a variable-length encoding step which subjects the output of the quantization step to variable-length encoding processing; wherein the intra prediction encoding step predicts a target pixel to be encoded by use of pixel values of two reference pixels between which the target pixel to be encoded is located.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: July 4, 2017
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Masashi Takahashi, Tomokazu Murakami
  • Patent number: 9699459
    Abstract: The present invention provides an image encoding/decoding technique that is capable of achieving the higher compression efficiency. An image encoding method comprises: an intra prediction step which performs intra prediction on a block basis to generate a predicted image; a subtraction step which calculates the difference in prediction between the predicted image generated by the intra prediction step and an original image; a frequency conversion step which performs frequency conversion processing for the difference in prediction; a quantization step which subjects the output of the frequency conversion step to quantization processing; and a variable-length encoding step which subjects the output of the quantization step to variable-length encoding processing; wherein the intra prediction encoding step predicts a target pixel to be encoded by use of pixel values of two reference pixels between which the target pixel to be encoded is located.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: July 4, 2017
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Masashi Takahashi, Tomokazu Murakami
  • Patent number: 9609322
    Abstract: The present invention provides an image encoding/decoding technique that is capable of achieving the higher compression efficiency. An image encoding method comprises: an intra prediction step which performs intra prediction on a block basis to generate a predicted image; a subtraction step which calculates the difference in prediction between the predicted image generated by the intra prediction step and an original image; a frequency conversion step which performs frequency conversion processing for the difference in prediction; a quantization step which subjects the output of the frequency conversion step to quantization processing; and a variable-length encoding step which subjects the output of the quantization step to variable-length encoding processing; wherein the intra prediction encoding step predicts a target pixel to be encoded by use of pixel values of two reference pixels between which the target pixel to be encoded is located.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: March 28, 2017
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Masashi Takahashi, Tomokazu Murakami
  • Patent number: 9549195
    Abstract: An image encoding device and corresponding decoding device are disclosed for achieving a high rate of compression. The encoding device includes an image conversion module that converts the direction of the images using right-left symmetry mode convention or up-down symmetry mode conversion. Encoding modules are used to encode both the unconverted and converted images. A mode selector module compares the quantity of codes in the encoded unconverted images and the quantity of codes in the encoded converted images, and selects codes that are smaller in the quantity of codes for output.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: January 17, 2017
    Assignee: HITACHI MAXELL, LTD.
    Inventors: Tomokazu Murakami, Yoshinori Suzuki
  • Publication number: 20160366406
    Abstract: The present invention provides an image encoding/decoding technique that is capable of achieving the higher compression efficiency. An image encoding method comprises: an intra prediction step which performs intra prediction on a block basis to generate a predicted image; a subtraction step which calculates the difference in prediction between the predicted image generated by the intra prediction step and an original image; a frequency conversion step which performs frequency conversion processing for the difference in prediction; a quantization step which subjects the output of the frequency conversion step to quantization processing; and a variable-length encoding step which subjects the output of the quantization step to variable-length encoding processing; wherein the intra prediction encoding step predicts a target pixel to be encoded by use of pixel values of two reference pixels between which the target pixel to be encoded is located.
    Type: Application
    Filed: August 24, 2016
    Publication date: December 15, 2016
    Inventors: Masashi Takahashi, Tomokazu Murakami
  • Publication number: 20160366404
    Abstract: The present invention provides an image encoding/decoding technique that is capable of achieving the higher compression efficiency. An image encoding method comprises: an intra prediction step which performs intra prediction on a block basis to generate a predicted image; a subtraction step which calculates the difference in prediction between the predicted image generated by the intra prediction step and an original image; a frequency conversion step which performs frequency conversion processing for the difference in prediction; a quantization step which subjects the output of the frequency conversion step to quantization processing; and a variable-length encoding step which subjects the output of the quantization step to variable-length encoding processing; wherein the intra prediction encoding step predicts a target pixel to be encoded by use of pixel values of two reference pixels between which the target pixel to be encoded is located.
    Type: Application
    Filed: August 24, 2016
    Publication date: December 15, 2016
    Inventors: Masashi Takahashi, Tomokazu Murakami