Patents by Inventor Takefumi Nagumo

Takefumi Nagumo 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: 20190281314
    Abstract: The present disclosure relates to an image encoding device and an image encoding method, and an image processing device and an image processing method that enable easier bitstream concatenation. A structure according to the present disclosure includes: a setting unit that sets header information related to a hypothetical reference decoder in accordance with information about a position and information about reference, the information about a position and the information about reference being of the current picture of image data to be processed; and an encoding unit that encodes the image data and generates a bitstream containing the encoded data of the image data and the header information set by the setting unit. The present disclosure can be applied to image processing devices or image encoding devices, for example.
    Type: Application
    Filed: May 16, 2019
    Publication date: September 12, 2019
    Applicant: SONY CORPORATION
    Inventors: Junichi TANAKA, Akihiro IMAMURA, Ohji NAKAGAMI, Takefumi NAGUMO, Yuichi ARAKI, Yuji FUJIMOTO, Shinobu HATTORI, Masakazu KOUNO
  • Publication number: 20190268597
    Abstract: The present disclosure relates to an image processing apparatus and method that can keep reduction in coding efficiency to a minimum. A scaling list is set that has values appropriate to a current block size for the current block to be quantized in an image to be coded, quantization is performed using the set scaling list, and coded data is generated by coding an acquired quantization coefficient. The present disclosure is applicable, for example, to an image processing apparatus, an image coding apparatus, an image decoding apparatus, and so on.
    Type: Application
    Filed: June 20, 2017
    Publication date: August 29, 2019
    Inventors: TAKEFUMI NAGUMO, HIRONARI SAKURAI
  • Patent number: 10375406
    Abstract: There is provided an image encoding device and an image encoding method, and an image processing device and an image processing method that enable easier bitstream concatenation. A structure according to the present disclosure includes: a setting unit that sets header information related to a hypothetical reference decoder in accordance with information about a position and information about reference, the information about a position and the information about reference being of the current picture of image data to be processed; and an encoding unit that encodes the image data and generates a bitstream containing the encoded data of the image data and the header information set by the setting unit. The present disclosure can be applied to image processing devices or image encoding devices, for example.
    Type: Grant
    Filed: February 24, 2015
    Date of Patent: August 6, 2019
    Assignee: SONY CORPORATION
    Inventors: Junichi Tanaka, Akihiro Imamura, Ohji Nakagami, Takefumi Nagumo, Yuichi Araki, Yuji Fujimoto, Shinobu Hattori, Masakazu Kouno
  • Publication number: 20190132590
    Abstract: There is provided an image processing device and method capable of suppressing a decrease in subjective image quality. A size of a current block for a prediction process is set according to a size of a peripheral block situated on a periphery of the current block. The prediction process is to generate a predicted image of an image to be encoded. An intra prediction process is performed on the current block that has been set and the predicted image is generated. The image to be encoded is encoded using the predicted image that has been generated. The present disclosure can be applied to, for example, an image processing device, an image encoding device, or an image decoding device.
    Type: Application
    Filed: May 25, 2017
    Publication date: May 2, 2019
    Applicant: SONY CORPORATION
    Inventors: Yoshitaka MORIGAMI, Shuo LU, Takefumi NAGUMO
  • Publication number: 20190132586
    Abstract: The present technology relates to a data processing apparatus, data processing method, and a program which improve a compression ratio. Provided are a first compression part compressing data using compressed sensing and a second compression part compressing observation coefficients coming from the first compression part using a method different from the method used in the first compression part. The first compression part performs random sampling using a sampling matrix optimized for compression by the second compression part. The sampling matrix is designed to minimize the differential value between the observation coefficients. The present technology can be applied to recording/reproducing apparatuses that capture, compress, record, and reproduce image data.
    Type: Application
    Filed: April 5, 2017
    Publication date: May 2, 2019
    Inventor: TAKEFUMI NAGUMO
  • Publication number: 20190045189
    Abstract: The present disclosure relates to image processing apparatus and method that can suppress a reduction in image quality. An addition order of candidate data that is a candidate for additional data to be added to encoded data including encoded image data in blocks is set on a block-by-block basis in order to set the encoded data to a fixed length. In this case, pseudo-random numbers may be used to set the addition order of the candidate data, or table information indicating the addition order of the candidate data may be used to set the addition order of the candidate data. The present disclosure can be applied to, for example, an image processing apparatus, an image encoding apparatus, an image decoding apparatus, or the like.
    Type: Application
    Filed: February 24, 2017
    Publication date: February 7, 2019
    Inventors: TOSHINORI IHARA, TAKEFUMI NAGUMO
  • Publication number: 20180338156
    Abstract: [Object] To realize a motion compensation method that is more suitable for parallel processing of multiple chips. [Solution] Provided is an image processing apparatus including: an inter-prediction section that generates a set of reference pixels of fractional pixel positions from a reference image for motion compensation and searches an image to be encoded for a motion vector by using the set of generated reference pixels; and an encoding section that encodes the image to be encoded on a basis of a result of searching for the motion vector by the inter-prediction section. The inter-prediction section includes a reference pixel at a fractional pixel position further inward than a first predetermined distance from a boundary of a partial region corresponding to a slice or a tile, in the set of reference pixels that are used for searching the partial region for a motion vector.
    Type: Application
    Filed: August 26, 2016
    Publication date: November 22, 2018
    Applicant: SONY CORPORATION
    Inventors: YOSHITAKA MORIGAMI, TAKEFUMI NAGUMO, HIRONARI SAKURAI, SHUO LU
  • Patent number: 10110916
    Abstract: The present disclosure relates to an encoding device and an encoding method capable of reducing a storage capacity necessary for bidirectional prediction. An accuracy transform unit transforms a motion vector with fractional pixel accuracy of an input image into a motion vector with integer pixel accuracy of the image for each of prediction directions for bidirectional prediction of the input image. An average unit forms a predicted image of the input image for bidirectional prediction on the basis of the motion vector with integer pixel accuracy transformed by the accuracy transform unit for each prediction direction. The present disclosure is applicable to an encoding device of high efficiency video coding (HEVC) system, for example.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: October 23, 2018
    Assignee: SONY CORPORATION
    Inventors: Hironari Sakurai, Junichi Tanaka, Takefumi Nagumo
  • Patent number: 10027968
    Abstract: Implementations generally relate to data-charge phase data compression. In one implementation, a method includes computing prediction values for image data, where the image data is data-charge phase data, where the computing of prediction values is based on inter-block prediction, and where an additional bit-budget is assigned to a first block of the image data. The method also includes computing residual data based on the prediction values. The method also includes quantizing the residual data. The method also includes entropy encoding the quantized residual data. The method also includes refining an inverse quantized residual data based on one or more of the residual data and a number of left-over bit-budget after entropy encoding.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: July 17, 2018
    Assignee: SONY CORPORATION
    Inventors: Hye-Yeon Cheong, Masaru Ikeda, Takefumi Nagumo, Ali Tabatabai
  • Patent number: 10015393
    Abstract: Provided is an imaging control device including a result receiving unit configured to receive an example image selected by an image processing device used for image processing using image information, the image information being information regarding an image captured by an imaging unit used for image capturing, a selection result transmitting unit configured to transmit information regarding the example image received by the result receiving unit to the image processing device, a setting receiving unit configured to receive setting information generated by the image processing device based on the example image transmitted from the selection result transmitting unit, the setting information indicating a setting condition when image capturing is performed like the example image, and a setting change unit configured to change an imaging setting of the imaging unit using the setting information received by the setting receiving unit.
    Type: Grant
    Filed: January 11, 2013
    Date of Patent: July 3, 2018
    Assignee: SONY CORPORATION
    Inventors: Hironari Sakurai, Jun Kimura, Yuji Ando, Keisuke Yamaoka, Takefumi Nagumo, Masashi Eshima
  • Publication number: 20180098069
    Abstract: The present disclosure relates to an image processing device and method that can suppress deterioration of the picture quality by encoding. The image processing device includes a decoding unit configured to decode encoded data obtained by lossy encoding an image of a frame encoded already which is used as a reference image in encoding of an image of a current frame and perform rounding of a decoded image obtained by the decoding with a rounding value whose value is changed over in a time direction of the image. The present disclosure can be applied, for example, to an image processing device, an image encoding device or the like.
    Type: Application
    Filed: February 26, 2016
    Publication date: April 5, 2018
    Inventors: NOBUO UEKI, TAKEFUMI NAGUMO, TOSHINORI IHARA
  • Publication number: 20170352290
    Abstract: To make it possible to reduce a human load for a cutaneous sensation control setting corresponding to an image. Provided is an image processing device including: an infrared image acquisition unit that acquires an infrared image of an imaged object; a visible light image acquisition unit that acquires a visible light image of the imaged object; a generation unit that generates cutaneous sensation control parameters on the basis of the infrared image acquired by the infrared image acquisition unit; and a data processing unit that associates the visible light image acquired by the visible light image acquisition unit with the cutaneous sensation control parameters generated by the generation unit.
    Type: Application
    Filed: October 9, 2015
    Publication date: December 7, 2017
    Inventors: TOSHIYUKI SASAKI, TAKAHIRO NAGANO, MASATOSHI YOKOKAWA, TAKEFUMI NAGUMO
  • Patent number: 9635370
    Abstract: Provided is an image processing apparatus including: an encoder configured to scalably encode image data; a write unit configured to cause storage via a predetermined bus to store encoded data that is the image data scalably encoded by the encoder; a read unit configured to read a desired layer of the encoded data from the storage via the bus; and a decoder configured to scalably decode the encoded data read from the storage by the read unit.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: April 25, 2017
    Assignee: SONY CORPORATION
    Inventors: Nobuo Ueki, Toshinori Ihara, Takefumi Nagumo, Hironari Sakurai, Shuo Lu, Yoshitaka Morigami
  • Publication number: 20170094312
    Abstract: The present disclosure relates to an encoding device and an encoding method capable of reducing a storage capacity necessary for bidirectional prediction. An accuracy transform unit transforms a motion vector with fractional pixel accuracy of an input image into a motion vector with integer pixel accuracy of the image for each of prediction directions for bidirectional prediction of the input image. An average unit forms a predicted image of the input image for bidirectional prediction on the basis of the motion vector with integer pixel accuracy transformed by the accuracy transform unit for each prediction direction. The present disclosure is applicable to an encoding device of high efficiency video coding (HEVC) system, for example.
    Type: Application
    Filed: April 8, 2015
    Publication date: March 30, 2017
    Applicant: SONY CORPORATION
    Inventors: Hironari SAKURAI, Junichi TANAKA, Takefumi NAGUMO
  • Publication number: 20170019668
    Abstract: There is provided an image processing apparatus and an image processing method which are capable of reducing a processing amount of a cost calculation, the image processing apparatus including: a filter processing section configured to perform a filter process of applying an offset to a pixel of a decoded image that is decoded; and a control unit configured to control a mode used when the filter process is performed and an offset for the mode according to an encoding parameter used when an image is encoded.
    Type: Application
    Filed: March 18, 2015
    Publication date: January 19, 2017
    Applicant: SONY CORPORATION
    Inventors: Yoshitaka MORIGAMI, Takefumi NAGUMO, Junichi TANAKA, Hironari SAKURAI
  • Publication number: 20170019685
    Abstract: In a sample adaptive offset (SAO), the coding efficiency is improved by selecting an optimum mode among a plurality of modes based on a technique called a band offset and an edge offset. However, a processing amount of the SAO tends to increase when an optimum mode and an offset value are set, and this may result in an increase in a circuit size or power consumption. In this regard, the present disclosure proposes to enable reducing a processing amount of a cost calculation of the sample adaptive offset. According to the present disclosure, there is provided an image processing apparatus, including: a control unit configured to set an offset value to be applied to a pixel of an image, from among candidates of the offset value restricted according to a bit depth of the image; and a filter processing section configured to perform a filter process of applying the offset value set by the control unit to the pixel of the image.
    Type: Application
    Filed: March 18, 2015
    Publication date: January 19, 2017
    Applicant: SONY CORPORATION
    Inventors: Yoshitaka MORIGAMI, Takefumi NAGUMO, Junichi TANAKA, Hironari SAKURAI
  • Publication number: 20170013267
    Abstract: The present disclosure relates to an image encoding device and an image encoding method, and an image processing device and an image processing method that enable easier bitstream concatenation. A structure according to the present disclosure includes: a setting unit that sets header information related to a hypothetical reference decoder in accordance with information about a position and information about reference, the information about a position and the information about reference being of the current picture of image data to be processed; and an encoding unit that encodes the image data and generates a bitstream containing the encoded data of the image data and the header information set by the setting unit. The present disclosure can be applied to image processing devices or image encoding devices, for example.
    Type: Application
    Filed: February 24, 2015
    Publication date: January 12, 2017
    Applicant: SONY CORPORATION
    Inventors: Junichi TANAKA, Akihiro IMAMURA, Ohji NAKAGAMI, Takefumi NAGUMO, Yuichi ARAKI, Yuji FUJIMOTO, Shinobu HATTORI, Masakazu KOUNO
  • Publication number: 20160373744
    Abstract: There is provided an image processing apparatus to relax performance requirements of an encoder to be less than in a technique of searching all block sizes comprehensively, including: a setting section configured to set a size of at least one of a coding unit formed by recursively dividing an image to be encoded and a prediction unit to be set in the coding unit according to a search range of the size of the at least one of the coding unit and the prediction unit, one or more smallest candidate sizes among all candidate sizes being excluded from the search range; and an encoding section configured to encode the image according to the size of the coding unit or the prediction unit set by the setting section.
    Type: Application
    Filed: April 10, 2015
    Publication date: December 22, 2016
    Applicant: SONY CORPORATION
    Inventors: Shuo LU, Junichi TANAKA, Hironari SAKURAI, Takefumi NAGUMO
  • Publication number: 20160373740
    Abstract: The present disclosure relates to an image encoding device and a method that can suppress a decrease in image quality due to encoding. The image encoding device includes: a control unit configured to restrict a mode of generation of a predicted image, based on prediction of image quality of reference image data to be referred to when generating the predicted image; a prediction unit configured to generate the predicted image according to a mode not restricted by the control unit; and an encoding unit configured to encode image data using the predicted image generated by the prediction unit. The present disclosure can be applied to an image processing device or an image encoding device, for example.
    Type: Application
    Filed: February 24, 2015
    Publication date: December 22, 2016
    Inventors: TAKEFUMI NAGUMO, NOBUO UEKI, TOSHINORI IHARA, SHUO LU, HIRONARI SAKURAI, YOSHITAKA MORIGAMI
  • Publication number: 20160366429
    Abstract: Implementations generally relate to data-charge phase data compression. In one implementation, a method includes computing prediction values for image data, where the image data is data-charge phase data, where the computing of prediction values is based on inter-block prediction, and where an additional bit-budget is assigned to a first block of the image data. The method also includes computing residual data based on the prediction values. The method also includes quantizing the residual data. The method also includes entropy encoding the quantized residual data. The method also includes refining an inverse quantized residual data based on one or more of the residual data and a number of left-over bit-budget after entropy encoding.
    Type: Application
    Filed: June 12, 2015
    Publication date: December 15, 2016
    Applicant: SONY CORPORATION
    Inventors: Hye-Yeon Cheong, Masaru Ikeda, Takefumi Nagumo, Ali Tabatabai