Patents by Inventor Yukinobu Yasugi

Yukinobu Yasugi 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).

  • Offset decoding device, offset coding device, image filtering device
    Patent number: 10390012
    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: August 20, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Takanori Yamazaki, Tomohiro Ikai, Tomoyuki Yamamoto, Yukinobu Yasugi
  • ENTROPY DECODING APPARATUS, ENTROPY CODING APPARATUS, IMAGE DECODING APPARATUS, AND IMAGE CODING APPARATUS
    Publication number: 20190246108
    Abstract: To improve the coding efficiency of intra-frame prediction of CU obtained by picture split. The present disclosure varies, based on the type of intra-frame prediction mode and/or the frequency of occurrence, the method of deriving a list used in estimation of the intra-frame prediction mode, and the binarization method in a case of entropy coding the intra-frame prediction mode.
    Type: Application
    Filed: August 23, 2017
    Publication date: August 8, 2019
    Inventors: TOMOKO AONO, YUKINOBU YASUGI, TOMOHIRO IKAI
  • IMAGE DECODING DEVICE, IMAGE ENCODING DEVICE, AND IMAGE DECODING METHOD
    Publication number: 20190238874
    Abstract: A video encoding device (2) includes a side information determination section (21) and a side information encoding section (22). The side information determination section (21) sets a quantization parameter for each macroblock in such a manner that a difference between quantization parameters for each pair of macroblocks with successive encoding orders is equal to one of n difference values, and transforms the difference into one of n indices with respect to each pair. The side information encoding section (22) generates a binary sequence having a length corresponding to the size of the absolute value of the index. The total of absolute values of the n indices is smaller than the total of absolute values of the n difference values.
    Type: Application
    Filed: April 5, 2019
    Publication date: August 1, 2019
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Yukinobu YASUGI, Tomohiro IKAI, Tomoyuki YAMAMOTO
  • IMAGE DECODING APPARATUS, IMAGE CODING APPARATUS, IMAGE DECODING METHOD, AND IMAGE CODING METHOD
    Publication number: 20190208201
    Abstract: An image decoding apparatus includes: an MPM candidate list deriving unit that derives an MPM candidate list by adding a plurality of different intra prediction modes to the MPM candidate list based on a shape of a target block, and an MPM parameter decoding unit decoding parameters for deriving the intra-prediction modes from the MPM candidate list.
    Type: Application
    Filed: August 7, 2017
    Publication date: July 4, 2019
    Inventors: YUKINOBU YASUGI, TOMOHIRO IKAI, YOSHIYA YAMAMOTO
  • IMAGE DECODING DEVICE AND IMAGE CODING DEVICE
    Publication number: 20190182497
    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: Application
    Filed: December 17, 2018
    Publication date: June 13, 2019
    Inventors: Tomoyuki Yamamoto, Tomohiro Ikai, Yukinobu Yasugi, Takeshi Tsukuba
  • IMAGE DECODING APPARATUS AND IMAGE CODING APPARATUS
    Publication number: 20190182498
    Abstract: An image decoding apparatus is provided with a CT information decoding unit that decodes division information indicating a division method for binary tree division with respect to a coding node of a coding tree unit, and performs the binary tree division with respect to the coding node by referring to the division information of another decoded coding node.
    Type: Application
    Filed: August 1, 2017
    Publication date: June 13, 2019
    Inventors: YOSHIYA YAMAMOTO, YUKINOBU YASUGI, TOMOHIRO IKAI, TOMOKO AONO
  • Decoding Device, Encoding Device, Decoding Method, Encoding Method, and Non-Transitory Computer Readable Recording Medium
    Publication number: 20190166374
    Abstract: A coding device and a decoding device are configured to include an estimated prediction mode deciding section (122a) including: a reference block selecting section (1223a) for selecting a reference block for use in estimating an intra-prediction mode for a subject block; an estimating number deciding section (1222a) for deciding an estimating number of estimated values to be estimated for the intra-prediction mode; and an estimated prediction mode deriving section (1221a) for estimating, based on a reference block, the estimating number of estimated values of the prediction mode.
    Type: Application
    Filed: January 30, 2019
    Publication date: May 30, 2019
    Inventor: Yukinobu Yasugi
  • Encoding device, decoding device, and data structure
    Patent number: 10306251
    Abstract: A video encoding device (2) includes a side information determination section (21) and a side information encoding section (22). The side information determination section (21) sets a quantization parameter for each macroblock in such a manner that a difference between quantization parameters for each pair of macroblocks with successive encoding orders is equal to one of n difference values, and transforms the difference into one of n indices with respect to each pair. The side information encoding section (22) generates a binary sequence having a length corresponding to the size of the absolute value of the index. The total of absolute values of the n indices is smaller than the total of absolute values of the n difference values.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: May 28, 2019
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yukinobu Yasugi, Tomohiro Ikai, Tomoyuki Yamamoto
  • VIDEO DECODING DEVICE
    Publication number: 20190158860
    Abstract: In a video decoding device which refers to a prediction image obtained by motion compensation using a motion vector to generate a decoded image, a first derivation unit derives, as an initial motion source vector, a motion vector in a block or sub-block with a feature amount satisfying a prescribed condition, among multiple blocks or sub-blocks neighboring to a target block including a target sub-block.
    Type: Application
    Filed: April 26, 2017
    Publication date: May 23, 2019
    Inventors: YUKINOBU YASUGI, TOMOHIRO IKAI
  • DECODING DEVICE, AN ENCODING DEVICE, AND A DECODING METHOD
    Publication number: 20190110070
    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: Application
    Filed: December 4, 2018
    Publication date: April 11, 2019
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Tomoyuki YAMAMOTO, Tomohiro IKAI, Yukinobu YASUGI
  • Offset decoding device, offset coding device, image filtering device
    Patent number: 10230952
    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: March 12, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Takanori Yamazaki, Tomohiro Ikai, Tomoyuki Yamamoto, Yukinobu Yasugi
  • Decoding device, encoding device, decoding method, encoding method, and non-transitory computer readable recording medium
    Patent number: 10230963
    Abstract: A coding device and a decoding device are configured to include an estimated prediction mode deciding section (122a) including: a reference block selecting section (1223a) for selecting a reference block for use in estimating an intra-prediction mode for a subject block; an estimating number deciding section (1222a) for deciding an estimating number of estimated values to be estimated for the intra-prediction mode; and an estimated prediction mode deriving section (1221a) for estimating, based on a reference block, the estimating number of estimated values of the prediction mode.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: March 12, 2019
    Assignee: Velos Media, LLC
    Inventor: Yukinobu Yasugi
  • 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
  • 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
  • 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
  • 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, 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
  • 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
  • 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