Patents by Inventor Tomoyuki Yamamoto

Tomoyuki Yamamoto 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).

  • IMAGE DECODING DEVICE, IMAGE ENCODING DEVICE, AND IMAGE DECODING METHOD
    Publication number: 20190075323
    Abstract: A hierarchy video decoding device (1) includes a parameter set decoding unit (12) that decodes reference region information, and a predicted image generation portion (1442) that derives a scale or a corresponding reference position, and generates a predicted image, based on a target layer reference region position and a reference layer reference region position which are derived from the reference region information.
    Type: Application
    Filed: November 6, 2018
    Publication date: March 7, 2019
    Inventors: Tomoyuki YAMAMOTO, Tomohiro IKAI, Takeshi TSUKUBA
  • Image decoder, image encoder, and encoded data converter
    Patent number: 10225567
    Abstract: The amount of encoding of hierarchically encoded data is reduced with an improvement in the accuracy of a predicted image by including information for accurate derivation of a position of a reference layer pixel corresponding to a pixel in a higher layer, which is a target layer, in the hierarchically encoded data. A hierarchical moving image decoder includes a parameter set decoding unit decoding inter-layer phase correspondence information and a predicted image generator generating a predicted image on the basis of the inter-layer phase correspondence information.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: March 5, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tomoyuki Yamamoto, Tomohiro Ikai, Takeshi Tsukuba
  • IMAGE DECODING DEVICE, AN IMAGE ENCODING DEVICE AND A DECODING METHOD
    Publication number: 20190068985
    Abstract: Even in a case in which a color format is a format other than 4:2:0, an image coding device and an image decoding device capable of accurately locating a reference pixel position in inter-layer image prediction are realized. A hierarchical moving image decoding device (1) includes a parameter set decoding section (12) that decodes a scaled reference layer offset syntax that is coded in a chroma pixel unit and a predicted image generation section (1442) that derives a scale based on a scaled reference layer offset which is a product of the scaled reference layer offset syntax and a luminance chroma size ratio of a target layer picture and generates a predicted image.
    Type: Application
    Filed: October 30, 2018
    Publication date: February 28, 2019
    Inventors: Tomoyuki YAMAMOTO, Tomohiro IKAI, Takeshi TSUKUBA
  • DECODING DEVICE, ENCODING DEVICE, AND DECODING METHOD
    Publication number: 20190052905
    Abstract: The amount of processing is reduced with high coding efficiency maintained. There is provided an arithmetic decoding device including syntax decoding means for decoding each of at least a first syntax element and a second syntax element indicating a transform coefficient using arithmetic decoding with a context or arithmetic decoding without a context. The syntax decoding means performs decoding that at least includes not decoding the first syntax element and decoding the second syntax element using the arithmetic decoding without a context, and decoding the first syntax element using the arithmetic decoding with a context and decoding the second syntax element using the arithmetic decoding without a context.
    Type: Application
    Filed: October 16, 2018
    Publication date: February 14, 2019
    Inventors: Tomohiro IKAI, Yukinobu YASUGI, Tomoyuki YAMAMOTO, Takeshi TSUKUBA
  • MOVING IMAGE DECODING DEVICE, MOVING IMAGE CODING DEVICE, AND PREDICTION IMAGE GENERATION DEVICE
    Publication number: 20190045214
    Abstract: A prediction image generation apparatus for generating a prediction image by performing motion compensation on multiple reference images, the prediction image generation apparatus includes a prediction image generation unit configured to generate the prediction image with reference to a first reference image, a second reference image and a gradient correction term. A motion compensation unit having a motion compensation function using a bi-prediction gradient change (Bi-directional optical flow, BIO) prediction derives the gradient correction term with reference to each pixel value of a horizontal gradient image and a vertical gradient image.
    Type: Application
    Filed: December 22, 2016
    Publication date: February 7, 2019
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: TOMOHIRO IKAI, TOMOYUKI YAMAMOTO
  • OFFSET DECODING DEVICE, OFFSET CODING DEVICE, IMAGE FILTERING DEVICE
    Publication number: 20190045187
    Abstract: An adaptive offset filter (60) adds an offset to the pixel value of each pixel forming an input image. The adaptive offset filter (60) refers to offset-type specifying information, sets offset attributes for a subject unit area of the input image, decodes an offset having a bit width corresponding to an offset value range included in the set offset attributes, and adds the offset to the pixel value of each pixel forming the input image.
    Type: Application
    Filed: October 12, 2018
    Publication date: February 7, 2019
    Inventors: Takanori YAMAZAKI, Tomohiro IKAI, Tomoyuki YAMAMOTO, Yukinobu YASUGI
  • PREDICTION IMAGE GENERATION DEVICE, VIDEO DECODING DEVICE, AND VIDEO CODING DEVICE
    Publication number: 20190037231
    Abstract: At least one of a vector candidate derivation unit and a merge candidate derivation unit derives a motion vector of each of multiple sub-blocks contained in a decoding target block by referring to motion vectors at multiple control points including two points at an interval which is longer than one side of the target block, and a prediction image generation unit refers to the motion vector of each sub-block to generate a prediction image.
    Type: Application
    Filed: January 11, 2017
    Publication date: January 31, 2019
    Inventors: TOMOHIRO IKAI, TOMOYUKI YAMAMOTO
  • Image decoding device and image coding device
    Patent number: 10194161
    Abstract: A reference picture information decoding unit (13) omits decoding of a reference list sorting presence or absence flag and/or a reference list sorting order based on the number of current picture referable pictures.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: January 29, 2019
    Assignee: Dolby International AB
    Inventors: Tomoyuki Yamamoto, Tomohiro Ikai, Yukinobu Yasugi, Takeshi Tsukuba
  • Method for decoding an image, image decoding apparatus, method for encoding an image, and image encoding apparatus
    Patent number: 10194169
    Abstract: To achieve a reduction in the amount of coding taken in the use of an asymmetric partition and to implement efficient encoding/decoding processes exploiting the characteristics of the asymmetric partition. An image decoding device includes a motion compensation parameter derivation unit configured to derive a motion compensation parameter indicating either a uni-prediction scheme or a bi-prediction scheme. In a case that a prediction unit has a size less than or equal to a predetermined value, the motion compensation parameter derivation unit is configured to derive the motion compensation parameter by switching between the prediction schemes.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: January 29, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tomoyuki Yamamoto, Tomohiro Ikai, Yukinobu Yasugi
  • Image decoding device, image coding device, and coding data transform device
    Patent number: 10187659
    Abstract: A hierarchy video decoding device (1) includes a parameter set decoding unit (12) that decodes reference region information, and a predicted image generation portion (1442) that derives a scale or a corresponding reference position, and generates a predicted image, based on a target layer reference region position and a reference layer reference region position which are derived from the reference region information.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: January 22, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tomoyuki Yamamoto, Tomohiro Ikai, Takeshi Tsukuba
  • MOVING IMAGE CODING DEVICE, A MOVING IMAGE CODING METHOD, AND A MOVING IMAGE DECODING DEVICE
    Publication number: 20190014351
    Abstract: A hierarchical moving image decoding device (1) includes a profile information decoding unit (1221a) that decodes/configures sublayer profile information after decoding a sublayer profile present flag regarding respective sublayers, and a level information decoding unit (1221b) that decodes/configures sublayer level information.
    Type: Application
    Filed: September 14, 2018
    Publication date: January 10, 2019
    Inventors: Takeshi TSUKUBA, Tomoyuki YAMAMOTO, Tomohiro IKAI, Yukinobu YASUGI
  • Image decoding device and image coding device
    Patent number: 10171823
    Abstract: Even in a case in which a color format is a format other than 4:2:0, an image coding device and an image decoding device capable of accurately locating a reference pixel position in inter-layer image prediction are realized. A hierarchical moving image decoding device (1) includes a parameter set decoding section (12) that decodes a scaled reference layer offset syntax that is coded in a chroma pixel unit and a predicted image generation section (1442) that derives a scale based on a scaled reference layer offset which is a product of the scaled reference layer offset syntax and a luminance chroma size ratio of a target layer picture and generates a predicted image.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: January 1, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tomoyuki Yamamoto, Tomohiro Ikai, Takeshi Tsukuba
  • IMAGE DECODING DEVICE, IMAGE DECODING METHOD, AND IMAGE ENCODING DEVICE
    Publication number: 20180376155
    Abstract: To achieve a reduction in the amount of coding taken in the use of an asymmetric partition and to implement efficient encoding/decoding processes exploiting the characteristics of the asymmetric partition. In a case that a CU information decoding unit decodes information for specifying an asymmetric partition (AMP; Asymmetric Motion Partition) as a partition type, an arithmetic decoding unit is configured to decode binary values by switching between arithmetic decoding that uses contexts and arithmetic decoding that does not use contexts in accordance with the position of the binary values.
    Type: Application
    Filed: August 31, 2018
    Publication date: December 27, 2018
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Tomoyuki YAMAMOTO, Tomohiro IKAI, Yukinobu YASUGI
  • IMAGE DECODING DEVICE AND IMAGE CODING DEVICE
    Publication number: 20180367782
    Abstract: An image decoding device which can extract an independent layer without rewriting of syntax and cause a non-scalable decoder to reproduce the extracted is realized. An image decoding device (1) includes a NAL-unit header decoding unit (211) that decodes a layer ID of an SPS, a dependency layer information decoding unit (2101) that decodes dependency layer information, and a profile level information decoding unit (2102) that decodes profile level information from a VPS. The decoding unit (2102) decodes the profile level information also from the SPS in a case where it is determined that a layer indicated by the layer ID is an independent layer, based on the dependency layer information.
    Type: Application
    Filed: August 23, 2018
    Publication date: December 20, 2018
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Tomohiro IKAI, Tomoyuki YAMAMOTO, Takeshi TSUKUBA
  • Arithmetic encoding device, arithmetic decoding device, arithmetic encoding method, and arithmetic decoding method
    Patent number: 10158887
    Abstract: The amount of processing is reduced with high coding efficiency maintained. There is provided an arithmetic decoding device including syntax decoding means for decoding each of at least a first syntax element and a second syntax element indicating a transform coefficient using arithmetic decoding with a context or arithmetic decoding without a context. The syntax decoding means performs decoding that at least includes not decoding the first syntax element and decoding the second syntax element using the arithmetic decoding without a context, and decoding the first syntax element using the arithmetic decoding with a context and decoding the second syntax element using the arithmetic decoding without a context.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: December 18, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tomohiro Ikai, Yukinobu Yasugi, Tomoyuki Yamamoto, Takeshi Tsukuba
  • WORKPIECE SUPPLY SYSTEM
    Publication number: 20180346256
    Abstract: A workpiece supply system includes a robot that supplies a workpiece to each of a plurality of workspaces where a worker performs a predetermined task on the workpiece; a detection unit that detects a degree of fatigue of the worker in each of the workspaces; a fatigue degree evaluation unit that determines whether or not the worker is in a fatigued state, based on the degree of fatigue of the worker detected by the detection unit; and a management device that adjusts, among a plurality of workers, a pace of supply of the workpiece to each of the workers, in a case where the worker is determined by the fatigue degree evaluation unit to be in the fatigued state.
    Type: Application
    Filed: May 18, 2018
    Publication date: December 6, 2018
    Inventors: Yuusuke KURIHARA, Tomoyuki YAMAMOTO
  • Image decoding device, image encoding device, and data structure of encoded data
    Patent number: 10148974
    Abstract: A video image decoding device (1) is equipped with a TT information decoder (14) that, in the case where encoded data includes merge/skip information that merges or skips presence information indicating whether or not frequency-domain transform coefficients are included in the quantized transform coefficients, does not decode the presence information, and a TT information inference unit (33) that, in the case where the encoded data includes merge/skip information that merges or skips the presence information, infers the presence information. The TT information decoder (14) uses presence information inferred by the TT information inference unit (33) to decode the encoded and quantized transform coefficients.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: December 4, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Tomoyuki Yamamoto
  • Image decoding apparatus, image coding apparatus, and coded data transformation apparatus
    Patent number: 10142653
    Abstract: A hierarchical image decoding apparatus, a hierarchical image coding apparatus, and a hierarchical coded data transformation apparatus where the hierarchical image decoding apparatus includes a parameter set decoder that decodes scale adjustment information, and a predictive image generator that generates a predictive image on the basis of the scale adjustment information, and the hierarchical image coding apparatus includes a parameter set encoder that encodes scale adjustment information, and the hierarchical coded data transformation apparatus includes a parameter set adjustor that transforms input hierarchically coded data based on inputted information of interest region, and adjusts scale adjustment information such that inter-layer scales derived from the hierarchically coded data before and after transformation coincide with each other.
    Type: Grant
    Filed: June 6, 2016
    Date of Patent: November 27, 2018
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Tomoyuki Yamamoto, Tomohiro Ikai, Takeshi Tsukuba
  • Offset decoding device, offset coding device, image filtering device
    Patent number: 10142631
    Abstract: An adaptive offset filter (60) adds an offset to the pixel value of each pixel forming an input image. The adaptive offset filter (60) refers to offset-type specifying information, sets offset attributes for a subject unit area of the input image, decodes an offset having a bit width corresponding to an offset value range included in the set offset attributes, and adds the offset to the pixel value of each pixel forming the input image.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: November 27, 2018
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Takanori Yamazaki, Tomohiro Ikai, Tomoyuki Yamamoto, Yukinobu Yasugi
  • Image decoding device and image decoding method
    Patent number: 10136151
    Abstract: An image decoding device is equipped with a header information decoding means for decoding profile/level information included in a video parameter set after decoding byte-aligned 16-bit extension information (next_essential_info_byte_offset) in the video parameter set.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: November 20, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Takeshi Tsukuba, Tomoyuki Yamamoto, Tomohiro Ikai, Yukinobu Yasugi, Sachin G. Deshpande