Predictive Coding Patents (Class 382/238)
  • Patent number: 10735772
    Abstract: A method for decoding an image in intra-prediction mode is discussed. The method includes reconstructing the intra-prediction mode of a current block; generating a reference pixel using an available reference pixel when there is an unavailable reference pixel for the current block; adaptively filtering the reference pixel of the current block based on the reconstructed intra-prediction mode and a size of the current block; and generating a prediction block of the current block using the intra-prediction mode of the current block and reference pixel corresponding to the intra-prediction mode Further, in the generating step of the reference pixel, the unavailable reference pixel is set as a pixel value of the available reference pixel, the available reference pixel being an available pixel on the nearest position in a predetermined direction from the unavailable reference pixel.
    Type: Grant
    Filed: October 2, 2018
    Date of Patent: August 4, 2020
    Assignee: IBEX PT HOLDINGS CO., LTD.
    Inventors: Kwangje Kim, Hyunoh Oh
  • Patent number: 10728541
    Abstract: Provided are an image encoding method and device. When carrying out image encoding for a block within a slice, at least one block in a restored block of the slice is set as a reference block. When this is done, the encoding parameters of the reference block are distinguished, and the block to be encoded is encoded adaptively based on the encoding parameters.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: July 28, 2020
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Sung Chang Lim, Jong Ho Kim, Hae Chul Choi, Hui Yong Kim, Ha Hyun Lee, Jin Ho Lee, Se Yoon Jeong, Suk Hee Cho, Jin Soo Choi, Jin Woo Hong, Jin Woong Kim
  • Patent number: 10721479
    Abstract: The intra prediction method according to the present invention comprises the steps of: deriving an intra prediction mode of a current block; deriving neighboring reference samples of the current block; and generating a prediction sample of the current block on the basis of linear interpolation of a first neighboring reference sample positioned in the prediction direction of the intra prediction mode, and a second neighboring reference sample positioned in the opposite direction of the prediction direction, among the neighboring reference samples of the current block, wherein the neighboring reference samples include left neighboring reference samples, left upper neighboring reference samples, upper neighboring reference samples, right neighboring reference samples, right lower neighboring reference samples, and lower neighboring reference samples of the current block.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: July 21, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Jin Heo, Hyeongmoon Jang
  • Patent number: 10708710
    Abstract: A computer system determines location probabilities for defined sub-areas (41, 43) of a geographical area (4), e.g. for squares arranged in a grid (40), based on field strengths expected in the small sub-areas (41, 43) from the antennas (A1, A2 A3, A4), and based on the antenna used by the mobile communication terminal. The location probabilities indicate for a sub-area (41, 43) the probability that the mobile communication terminal is located in the respective sub-area (41, 43). The computer system determines at least one ellipse defining the location area, based on the location probabilities of the sub-areas (41, 43). The location probabilities make it possible to determine elliptical location areas of mobile users much smaller than the area each antenna does cover physically, but without the need for measuring at the mobile communication terminal signal properties such as signal strength or observed time differences.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: July 7, 2020
    Assignee: SWISSCOM AG
    Inventors: Ernst Versteeg, Eric Taillard, Patrick Bailly, Maxence Laurent
  • Patent number: 10708619
    Abstract: Disclosed are a method and device for generating a predicted picture, the method comprising: determining a reference rectangular block of pixels by shifting or warping parameter information which includes a location of a target rectangular block of pixels, or the parameter information comprises a location of a target rectangular block of pixels and depth information of a reference view; mapping the reference rectangular block of pixels to a target view according to the depth information of the reference view to obtain a projection rectangular block of pixels; and acquiring a predicted picture block from the projection rectangular block of pixels.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: July 7, 2020
    Assignee: XI'AN ZHONGXING NEW SOFTWARE CO., LTD.
    Inventors: Lu Yu, Yichen Zhang, Yin Zhao, Yingjie Hong, Ming Li
  • Patent number: 10694184
    Abstract: The present invention relates to a method and apparatus for performing encoding and decoding using a variably-sized quantization coefficient group, in quantization coefficient group encoding and decoding of video compression technology.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: June 23, 2020
    Assignee: DIGITALINSIGHTS INC.
    Inventors: Yongjo Ahn, Donggyu Sim, Hochan Ryu, Seanae Park, Woong Lim
  • Patent number: 10694178
    Abstract: A video processing device configured to encode frames divided into a plurality of layers according to a prediction type includes a pre-processing circuit configured to, generate a mode analysis result by analyzing mode information for each of N neighboring frames neighboring a target frame, and determine a target layer bit numbers allocated to each of the plurality of layers based on the mode analysis result, N being an integer equal to or greater than 2; and a first encoder configured to encode the target frame according to the determined target layer bit numbers.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: June 23, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Sung-ho Jun
  • Patent number: 10694213
    Abstract: A method, system and computer program code for analyzing a video stream, the method comprising: receiving a sequence of communication packets associated with a frame and an indication to a frame number; retrieving slices associated with the frame from the sequence of communication packets until a missing or corrupted slice, or an end of the frame is encountered; subject to no missing or corrupted slice encountered, providing the slices associated with the frame to a handling unit; and subject to a missing or corrupted slice encountered: skipping data from a beginning of the missing or corrupted frame; and resuming retrieving the slices subject to the end of the frame not being encountered.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: June 23, 2020
    Assignee: Electronic Arts Inc.
    Inventors: Tomer Holtzman, Yahav Zamari, Asaf Barak, Iddit Shalem
  • Patent number: 10687079
    Abstract: Techniques include constraining depth intra mode coding in a three-dimensional (3D) video coding process, such as 3D-High Efficiency Video Coding (3D-HEVC). In some examples, the techniques for constraining depth intra mode coding may prevent transform tree nodes from being split into sub-transform tree nodes when a depth prediction unit that corresponds to the transform tree node is predicted according to a depth modeling mode (DMM). In further examples, the techniques for constraining depth intra mode coding may prevent the DMM mode from being used when the maximum transform unit size that corresponds to a depth prediction unit is greater than the size of the depth prediction unit. The techniques for constraining depth intra mode coding may prevent characteristics of the DMM prediction modes used in 3D-HEVC and characteristics of the transform tree subdivision used in 3D-HEVC from interfering with each other.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: June 16, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Hongbin Liu, Ying Chen
  • Patent number: 10681347
    Abstract: A filtering method performed by a decoding device according to the present invention comprises the steps of: deriving a specific neighboring block of a current block so as to derive filter information on the current block; deriving the specific neighboring block and a reference block within a reference picture corresponding to the specific neighboring block; deriving the filter information on the current block on the basis of the specific neighboring block and the reference block; and filtering the current block on the basis of the filter information. According to the present invention, the overall coding efficiency can be improved by deriving the filter information on the basis of the neighboring block of the already decoded current block and reducing or removing the amount of data for the transmission of the information necessary for filter generation.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: June 9, 2020
    Assignee: LG Electronics Inc.
    Inventors: Chulkeun Kim, Junghak Nam, Jaehyun Lim, Naeri Park, Jungdong Seo
  • Patent number: 10674147
    Abstract: An image data encoding and/or decoding apparatus comprises a data processor to process an image data signal comprising successive arrays of data values according to respective data value processing orders associated with the arrays of data values; and a processing order selector to select a processing order for processing a current array of data values in dependence on one or more attributes of a plurality of arrays of data values in the image data signal already processed by the data processor.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: June 2, 2020
    Assignee: Sony Corporation
    Inventors: Magali Kimlee Miri Philippe, Nicholas Ian Saunders, Karl James Sharman
  • Patent number: 10659793
    Abstract: Described tools and techniques relate to signaling for DC coefficients at small quantization step sizes. The techniques and tools can be used in combination or independently. For example, a tool such as a video encoder or decoder processes a VLC that indicates a DC differential for a DC coefficient, a FLC that indicates a value refinement for the DC differential, and a third code that indicates the sign for the DC differential. Even with the small quantization step sizes, the tool uses a VLC table with DC differentials for DC coefficients above the small quantization step sizes. The FLCs for DC differentials have lengths that vary depending on quantization step size.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: May 19, 2020
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Chih-Lung Lin, Shankar Regunathan, Sridhar Srinivasan
  • Patent number: 10659820
    Abstract: Provided is an image coding method that partitions an input image signal into processing units, and that codes the partitioned image to generate a code sequence. In particular, the image coding method determines a partitioning pattern for hierarchically partitioning the input image signal in order starting from a largest unit of the processing units, generates partition information indicative of the partitioning pattern, and codes partition information. The partition information includes maximum used hierarchy depth information indicative of a maximum used hierarchy depth which is a hierarchy depth of a deepest processing unit of the processing units included in the partitioning pattern.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: May 19, 2020
    Assignee: SUN PATENT TRUST
    Inventors: Hisao Sasai, Takahiro Nishi, Youji Shibahara, Toshiyasu Sugio
  • Patent number: 10644720
    Abstract: An information processing apparatus includes a memory and a processor coupled to the memory. The processor receives a compression request which designates data represented by a plurality of integers, and reduces entropy by multiplying a data matrix, which is obtained by representing the data designated by the compression request by a matrix, by a transformation matrix of which determinant is 1.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: May 5, 2020
    Assignee: FUJITSU LIMITED
    Inventor: Yui Noma
  • Patent number: 10638157
    Abstract: An image decoding method performed by a decoding apparatus according to the present invention comprises: a step of deriving an intra prediction mode for a current block; a step of deriving upper neighboring samples of a plurality of rows for the current block, and left neighboring samples of a plurality of columns; a step of deriving one row of upper reference samples on the basis of the upper neighboring samples; a step of deriving one column of left reference samples on the basis of the left neighboring samples; and a step of generating a prediction sample for the current block by using at least one of the upper reference samples and the left reference samples in accordance with the intra prediction mode.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: April 28, 2020
    Assignee: LG ELECTRONICS INC.
    Inventor: Jin Heo
  • Patent number: 10630986
    Abstract: Methods and apparatuses for encoding and decoding an intra prediction mode of a prediction unit of a chrominance component based on an intra prediction mode of a prediction unit of a luminance component are provided. When an intra prediction mode of a prediction unit of a luminance component is the same as an intra prediction mode in an intra prediction mode candidate group of a prediction unit of a chrominance component, reconstructing the intra prediction mode candidate group of the prediction unit of the chrominance component by excluding or replacing an intra prediction mode of the prediction unit of the chrominance component which is same as an intra prediction mode of the prediction unit of the luminance component from the intra prediction mode candidate group, and encoding the intra prediction mode of the prediction unit of the chrominance component by using the reconstructed intra prediction mode candidate group.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: April 21, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Vadim Seregin, Jianle Chen, Sun-il Lee, Tammy Lee
  • Patent number: 10623750
    Abstract: Provided are methods and apparatuses for improving compression efficiency in directional intra-prediction. A video encoding apparatus, which does not need to record intra mode information, includes a mode selector that selects one from among a plurality of intra modes on the basis of a directionality of at least one neighboring block that has already been reconstructed before a current block is reconstructed, an intra predictor that obtains a prediction block of the current block from the at least one neighboring block according to the directionality of the selected mode, and obtains a residual block by subtracting the prediction block from the current block, and a unit for encoding the obtained residual block.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: April 14, 2020
    Assignee: Ideahub Inc.
    Inventors: Je Chang Jeong, Soon Jong Jin, Sang Jun Park, Hyuk Lee
  • Patent number: 10623760
    Abstract: Image coding and decoding methods are provided. A first flag indicates whether a predetermined extension standard of a predetermined image coding standard is used. When the first flag indicates that the extension standard is used, a second flag indicates whether a first scheme is used for coding and decoding a current block included in an image. The first scheme is included in the extension standard. When the first flag indicates that the extension standard is used, a third flag indicates whether a third scheme is used for coding and decoding the image. The third scheme is included in the extension standard. The second flag and the third flag are included in headers of different layers, with the first flag corresponding to each of the second flag and the third flag being included in each of the headers.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: April 14, 2020
    Assignee: SUN PATENT TRUST
    Inventors: Hisao Sasai, Kengo Terada
  • Patent number: 10623751
    Abstract: Provided are methods and apparatuses for improving compression efficiency in directional intra-prediction. A video encoding apparatus, which does not need to record intra mode information, includes a mode selector that selects one from among a plurality of intra modes on the basis of a directionality of at least one neighboring block that has already been reconstructed before a current block is reconstructed, an intra predictor that obtains a prediction block of the current block from the at least one neighboring block according to the directionality of the selected mode, and obtains a residual block by subtracting the prediction block from the current block, and a unit for encoding the obtained residual block.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: April 14, 2020
    Assignee: Ideahub Inc.
    Inventors: Je Chang Jeong, Soon Jong Jin, Sang Jun Park, Hyuk Lee
  • Patent number: 10623749
    Abstract: Provided are methods and apparatuses for improving compression efficiency in directional intra-prediction. A video encoding apparatus, which does not need to record intra mode information, includes a mode selector that selects one from among a plurality of intra modes on the basis of a directionality of at least one neighboring block that has already been reconstructed before a current block is reconstructed, an intra predictor that obtains a prediction block of the current block from the at least one neighboring block according to the directionality of the selected mode, and obtains a residual block by subtracting the prediction block from the current block, and a unit for encoding the obtained residual block.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: April 14, 2020
    Assignee: Ideahub Inc.
    Inventors: Je Chang Jeong, Soon Jong Jin, Sang Jun Park, Hyuk Lee
  • Patent number: 10623768
    Abstract: Disclosed are an intra prediction method of a chrominance block using a luminance sample and an apparatus using the same. An image decoding method comprises the steps of: calculating an intra prediction mode of a chrominance block on the basis of an LM mapping table when the chrominance block uses an LM; and generating a prediction block for the chrominance block on the basis of the calculated intra prediction mode of the chrominance block. When intra prediction mode information of chrominance blocks are decoded, mutually different tables are used depending on whether or not an LM is used, so that encoding and decoding can be performed without an unnecessary waste of bits.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: April 14, 2020
    Assignee: LG Electronics Inc.
    Inventors: Yong Joon Jeon, Seung Wook Park, Jae Hyun Lim, Jung Sun Kim, Joon Young Park, Young Hee Choi, Jae Won Sung, Byeong Moon Jeon
  • Patent number: 10609418
    Abstract: An exemplary method for intelligent compression defines a threshold value for a temperature reading generated by a temperature sensor. Data blocks received into the compression module are compressed according to either a first mode or a second mode, the selection of which is determined based on a comparison of the active level for the temperature reading to the defined threshold value. The first compression mode may be associated with a lossless compression algorithm while the second compression mode is associated with a lossy compression algorithm. Or, both the first compression mode and the second compression mode may be associated with a lossless compression algorithm, however, for the first compression mode the received data blocks are produced at a default high quality level setting while for the second compression mode the received data blocks are produced at a reduced quality level setting.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: March 31, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Serag Gadelrab, Chinchuan Chiu, Moinul Khan, Kyle Ernewein, Tom Longo, Simon Booth, Meghal Varia, Milivoje Aleksic
  • Patent number: 10609393
    Abstract: This invention makes it possible to increase an encoding efficiency and reduce redundant processing. For this, an encoding apparatus includes a first encoder which encodes a run length in which identical pixels continue, a second encoder which prediction-encodes a pixel of an encoding target, a first determiner which determines whether a pixel of interest is located within a predetermined range on a line on which the pixel of interest is located, thereby determines whether to apply the second encoder to the pixel of interest, and a second determiner which, if the pixel of interest is located outside the predetermined range, determines, by referring to an already encoded pixel located around the pixel of interest, which one of the first encoder and the second encoder is to be applied to the pixel of interest.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: March 31, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Hiroshi Oto
  • Patent number: 10595036
    Abstract: The present technology relates to a decoding device and a decoding method capable of reducing the amount of information relating to information specifying a reference image. A reception unit receives inter_ref_pic_set_prediction_flag representing whether reference image specifying information specifying a reference image, which is used for generating a predicted image, of a prior image that is an image prior to a current coding image in coding order that is transmitted in a case where the current coding image is an image other than a first image of a GOP (Group of Picture) is used as the reference image specifying information of the current coding image. The present technology, for example, can be applied to a decoding device of an HEVC (High Efficiency Video Coding) system.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: March 17, 2020
    Assignee: Velos Media, LLC
    Inventors: Shuo Lu, Kazushi Sato
  • Patent number: 10595042
    Abstract: A method for coding multiple binary data into a bitstream is disclosed. The method splits each of four luma binary data into a luma context-dependent segment and a luma context-independent segment, and splits one chroma binary data into a chroma context-dependent segment and a chroma context-independent segment. The method groups first coded data including four coded luma context-dependent segments, second coded data including four coded luma context-independent segments and third coded data including a coded chroma context-dependent segment and a coded chroma context-independent segment. The method further performs, separately, context adaptive binary arithmetic coding on the first coded data and the chroma context-dependent segment using a variable probability. The method also performs, separately, bypass coding on the second coded data and the chroma context-independent segment using a fixed probability.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: March 17, 2020
    Assignee: SUN PATENT TRUST
    Inventors: Hisao Sasai, Takahiro Nishi, Youji Shibahara, Toshiyasu Sugio, Kyoko Tanikawa, Toru Matsunobu
  • Patent number: 10587892
    Abstract: There is provided an image processing apparatus including a an acquiring unit for acquiring moving image data containing a plurality of successive frames, and one or a plurality of image data corresponding to the frames and having a spatial resolution higher than the frames; a motion prediction unit for detecting a motion vector between the frames using the moving image data; a difference amount calculation unit for calculating a difference amount between a predetermined frame and the frame corresponding to the image data; and an image generation unit capable of generating motion compensated image data corresponding to the predetermined frame based on the frame corresponding to the image data and the motion vector.
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: March 10, 2020
    Assignee: SONY CORPORATION
    Inventors: Ohji Nakagami, Junichi Tanaka, Yoichi Yagasaki
  • Patent number: 10579908
    Abstract: Systems and methods described herein may relate to image transformation utilizing a plurality of deep neural networks. An example method includes receiving, at a mobile device, a plurality of image processing parameters. The method also includes causing an image sensor of the mobile device to capture an initial image and receiving, at a coefficient prediction neural network at the mobile device, an input image based on the initial image. The method further includes determining, using the coefficient prediction neural network, an image transformation model based on the input image and at least a portion of the plurality of image processing parameters. The method additionally includes receiving, at a rendering neural network at the mobile device, the initial image and the image transformation model. Yet further, the method includes generating, by the rendering neural network, a rendered image based on the initial image, according to the image transformation model.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: March 3, 2020
    Assignee: Google LLC
    Inventors: Jiawen Chen, Samuel Hasinoff, Michael Gharbi, Jonathan Barron
  • Patent number: 10567789
    Abstract: A device for coding three-dimensional includes a video coder configured to add one or more motion vector candidates to a motion vector candidate list; identify, from the one or more motion vector candidates in the motion vector candidate list, a disparity motion vector candidate; based on the disparity motion vector candidate, determine a disparity shifted motion vector (DSMV) candidate; and add the DSMV candidate to the motion vector candidate list; and code the block of video data using a motion vector corresponding to the identified candidate.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: February 18, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Ying Chen, Hongbin Liu
  • Patent number: 10567753
    Abstract: Various techniques and tools for encoding and decoding (e.g., in a video encoder/decoder) binary information (e.g., skipped macroblock information) are described. In some embodiments, the binary information is arranged in a bit plane, and the bit plane is coded at the picture/frame layer. The encoder and decoder process the binary information and, in some embodiments, switch coding modes. For example, the encoder and decoder use normal, row-skip, column-skip, or differential modes, or other and/or additional modes. In some embodiments, the encoder and decoder define a skipped macroblock as a predicted macroblock whose motion is equal to its causally predicted motion and which has zero residual error. In some embodiments, the encoder and decoder use a raw coding mode to allow for low-latency applications.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: February 18, 2020
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Sridhar Srinivasan, Pohsiang Hsu
  • Patent number: 10567795
    Abstract: A method and apparatus of using logical mode numbers during both prediction and coding in the bit stream, such as for high efficiency video coders (HEVC). These logical intra mode numbers are sorted based on angle which as a result leads to improved coding designs with fewer and smaller look-up tables, and a small gain in coding efficiency. Furthermore, by using this type of naming, the number of most probable modes (MPMs) can be readily extended since no additional tables are required. The use of three MPMs achieves a larger gain of 0.25% and 0.31% for the AI_HE and AI_LC cases, respectively.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: February 18, 2020
    Assignee: SONY CORPORATION
    Inventors: Ehsan Maani, Ali Tabatabai, Jun Xu
  • Patent number: 10560705
    Abstract: This invention makes it possible to increase an encoding efficiency and reduce redundant processing. For this, an encoding apparatus includes a first encoder which encodes a run length in which identical pixels continue, a second encoder which prediction-encodes a pixel of an encoding target, a first determiner which determines whether a pixel of interest is located within a predetermined range on a line on which the pixel of interest is located, thereby determines whether to apply the second encoder to the pixel of interest, and a second determiner which, if the pixel of interest is located outside the predetermined range, determines, by referring to an already encoded pixel located around the pixel of interest, which one of the first encoder and the second encoder is to be applied to the pixel of interest.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: February 11, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Hiroshi Oto
  • Patent number: 10560600
    Abstract: An encoding apparatus includes circuitry. The circuitry is configured to read predetermined unit image data that is a predetermined plurality of pixel units of image data; generate pixel unit code data obtained by encoding the read predetermined unit image data on a pixel basis; generate predetermined unit code data obtained by encoding the read predetermined unit image data on a predetermined unit basis; compare a code length that is a data amount of the pixel unit code data with a data amount of the predetermined unit image data to make determination; and output the predetermined unit code data in a case where the code length is greater than the data amount of the predetermined unit image data and output the pixel unit code data in a case where the code length is not greater than the data amount, on basis of a result of the determination.
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: February 11, 2020
    Assignee: Ricoh Company, Ltd.
    Inventor: Naoto Shiraishi
  • Patent number: 10555003
    Abstract: A method and apparatus for decoding a video signal are disclosed. A method for decoding a video signal includes obtaining block type information of a current block, confirming a prediction mode of the current block based on the block type information, obtaining, if the prediction mode of the current block is an intra prediction mode according to the prediction mode, at least one correlation parameter information using at least one neighboring pixel of the current block, obtaining an intra prediction value of the current block using the correlation parameter information, and reconstructing the current block using the intra prediction value of the current block.
    Type: Grant
    Filed: December 5, 2018
    Date of Patent: February 4, 2020
    Assignee: LG Electronics Inc.
    Inventors: Jae Won Sung, Seung Wook Park, Yong Joon Jeon, Jung Sun Kim, Young Hee Choi, Byeong Moon Jeon, Joon Young Park
  • Patent number: 10531109
    Abstract: The present invention relates generally to images. More particularly, an embodiment of the present invention relates to the pixel group segmented quantization and de-quantization of the residual signal in layered coding of high dynamic range images. By assigning the pixels in the residual image to different pixel groups based on the pixel value of the corresponding pixel in the decoded base layer signal, and by applying pixel group quantizing functions to assigned pixels a more efficient coding can be achieved.
    Type: Grant
    Filed: January 25, 2016
    Date of Patent: January 7, 2020
    Assignees: Dolby Laboratories Licensing Corporation, Dolby International AB
    Inventors: Klaas Heinrich Schueuer, Uwe Michael Kowalik, Arion Neddens, Philipp Kraetzer, Guan-Ming Su
  • Patent number: 10521144
    Abstract: Provided are a data block storage method, a data query method and a data modification method. The data block storage method splits file content of a data block to be stored, to generate at least two pieces of file content of the split data block. The file content of the data block to be split comprises at least one character set which is the smallest unit of the file content indicating the meaning of the data block to be split, the character set comprises a plurality of characters, each piece of file content of the split data block comprises a portion of the characters of the same character set. Even if another person obtains a portion of the data content after splitting, it would not be possible to parse effective content; and the split file content is stored in at least two independent storage systems, improving data security.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: December 31, 2019
    Assignee: Beijing Gupanchuangshi Science and Technology Development Co., Ltd.
    Inventors: Haiying Zhang, Haiyan Zhou
  • Patent number: 10484702
    Abstract: An encoding method, a decoding method, an encoding apparatus, a decoding apparatus, for a video image. The encoding method includes: determining an optimal merged neighboring block for a current block based on a motion vector merging technology; determining, based a prediction direction of the optimal merged neighboring block, a motion vector derivation mode that needs to be used by a decoder; correcting a motion vector of the current block based on the motion vector derivation mode; and determining a residual between a predicted value and an original value of the current block based on the corrected motion vector, thereby encoding the current block. According to the technical solutions, a more accurate predicted value is obtained by correcting the motion vector, and a smaller residual is generated.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: November 19, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Sixin Lin, Mingyuan Yang
  • Patent number: 10477231
    Abstract: A block prediction method for decoding a picture, according to the present invention, comprises the steps of: deriving a reference block from a reference picture to predict a current block in a current picture; determining a reference illumination compensation (IC) parameter; generating an illumination-compensated reference block by applying reference IC to the reference block on the basis of the reference IC parameter; and generating a predicted sample of the current block on the basis of the illumination-compensated reference block. According to the present invention, an illumination difference between the current block of the current picture and the reference block of the reference picture can be compensated for, block prediction efficiency can be increased, and a data amount of a residual signal to be transmitted from an encoder to a decoder is reduced. Therefore, compression and coding efficiency can be increased.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: November 12, 2019
    Assignee: LG Electronics Inc.
    Inventors: Jaehyun Lim, Seungwook Park, Junghak Nam
  • Patent number: 10477239
    Abstract: An encoder calculates an indication to a previous reference picture having temporal identity of zero. The encoder creates a first set of indicators to the previous reference picture, to all reference pictures in a first reference picture set of the previous reference picture, and to all pictures following the previous reference picture in decoding order and precede the current picture in decoding order. The encoder sets a flag for picture order count cycle, when a long term reference picture (LTRP) has least significant bits (LSBs) of a picture order count, for which more than one picture in the first set share same value of the LSBs of picture order count as the LTRP. The decoder obtains LSB of a picture order count for a LTRP in a reference picture set of the current picture. The decoder concludes non-compliant bitstream based on indications provided by the flag.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: November 12, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Jonatan Samuelsson, Rickard Sjöberg
  • Patent number: 10469844
    Abstract: An intra prediction method and a device using the intra prediction method are provided. The intra prediction method includes the steps of: deriving a current prediction mode as a prediction mode of a current block; constructing neighboring samples of the current block with available reference samples; filtering the available reference samples; and generating predicted samples of the current block on the basis of the filtered available reference samples. The filtering step includes performing the filtering using the available reference sample located in the prediction direction of the current prediction mode and a predetermined number of available reference samples neighboring to the prediction direction of the current prediction mode.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: November 5, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Yong Joon Jeon, Seung Wook Park, Jung Sun Kim, Joon Young Park, Byeong Moon Jeon, Jae Hyun Lim
  • Patent number: 10440394
    Abstract: Video coding using a context adaptive scan order for entropy coding may include decoding a current block by identifying a context adaptive scan order for entropy decoding a transform block, which may include identifying non-zero-coefficient probabilities for the transform block such that each location in the transform block corresponds to a respective non-zero-coefficient probability from the non-zero-coefficient probabilities, assigning a respective context adaptive scan order position to each location in the transform block in descending magnitude order of the respective corresponding non-zero-coefficient probabilities such that the context adaptive scan order position for each location exceeds the context adaptive scan order position assigned to entropy coding context locations for the respective location, entropy decoding transform coefficients from the encoded video stream based on the context adaptive scan order, and reconstructing the decoded block based on the transform block.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: October 8, 2019
    Assignee: GOOGLE LLC
    Inventors: Jingning Han, Ching-Han Chiang
  • Patent number: 10432856
    Abstract: Methods and apparatus of compression for pre-stitched pictures captured by multiple cameras of a panoramic video capture device are disclosed. At the encoder side, stitching information associated with a stitching process to form the pre-stitched pictures is used to encode a current block according to embodiments of the present invention, where the stitching information comprises calibration data, matching results, seam position, blending level, sensor data, or a combination thereof. In one embodiment, the stitching information corresponds to matching results associated with a projection process, and projection-based Inter prediction is used to encode the current block by projecting a reference block in a reference pre-stitched picture to coordinates of the current block. In another embodiment, the stitching information corresponds to seam information associated with seam detection, and seam-based Inter prediction is used to encode the current block by utilizing the seam information.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: October 1, 2019
    Assignee: MEDIATEK INC.
    Inventors: Tsui-Shan Chang, Yu-Hao Huang, Chih-Kai Chang, Tsu-Ming Liu
  • Patent number: 10393992
    Abstract: Methods, devices, and systems for automatic white balance are disclosed. In some aspects, a device includes a memory and a processor coupled to a camera and the memory. The processor may be configured to determine a first number of statistics associated with a first frame, cause the camera to perform a first autofocus operation, determine a second number of statistics associated with a second frame during the first autofocus operation, the second number of statistics being less than the first number of statistics, determine a white balance gain based on the first number of statistics and the second number of statistics, and apply the white balance gain to a third frame.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: August 27, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Kyuseo Han, Jisoo Lee
  • Patent number: 10390025
    Abstract: A method of encoding a video signal includes selecting a set of base filter kernels from a filter bank; determining a prediction filter parameter based on the set of base filter kernels; performing a filtering of a reference region for a target region based on the prediction filter parameter; and predicting the target region based on the filtered reference region, wherein the prediction filter parameter includes at least one of modulation scalar and partition information.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: August 20, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Onur Guleryuz, Shunyao Li, Sehoon Yea
  • Patent number: 10387703
    Abstract: A method of verifying an identity of a printed item includes capturing an image of the unverified printed item, wherein the unverified printed item includes artifacts and at least some of the artifacts were not controllably producible in producing the unverified printed item; extracting information associated with the artifacts of the unverified printed item; ranking the information associated with the artifacts of the unverified printed item; retrieving stored ranked information associated with artifacts of an original printed item from a storage device; and in each of a first and second range of magnitudes, comparing the ranked information associated with the artifacts of the unverified printed item with the ranked information associated with the artifacts of the original printed item.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: August 20, 2019
    Assignee: SYS-TECH SOLUTIONS, INC.
    Inventor: Michael L. Soborski
  • Patent number: 10390051
    Abstract: Provided is an image coding method that partitions an input image signal into processing units, and that codes the partitioned image to generate a code sequence. In particular, the image coding method determines a partitioning pattern for hierarchically partitioning the input image signal in order starting from a largest unit of the processing units, generates partition information indicative of the partitioning pattern, and codes partition information. The partition information includes maximum used hierarchy depth information indicative of a maximum used hierarchy depth which is a hierarchy depth of a deepest processing unit of the processing units included in the partitioning pattern.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: August 20, 2019
    Assignee: SUN PATENT TRUST
    Inventors: Hisao Sasai, Takahiro Nishi, Youji Shibahara, Toshiyasu Sugio
  • Patent number: 10390044
    Abstract: In one example, an apparatus for encoding video data includes a video encoder configured to select an intra-prediction mode to use to encode a block of video data, determine whether the block includes a sub-block of a size for which multiple transforms are possible based on the size of the sub-block and the selected intra-prediction mode, when the block includes the sub-block of the size for which multiple transforms are possible based on the size of the sub-block and the selected intra-prediction mode, select one of the multiple possible transforms, transform the sub-block using the selected one of the multiple possible transforms, and provide an indication of the selected one of the multiple possible transforms for the size of the block.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: August 20, 2019
    Assignee: Qualcomm Incorporated
    Inventors: Marta Karczewicz, Muhammed Zeyd Coban, Peisong Chen, Hsiao-Chiang Chuang, Rajan Laxman Joshi
  • Patent number: 10382765
    Abstract: A video signal has at least a first signal component corresponding to a first color, and a second signal component, associated with the first signal component and corresponding to a second color. Each signal component is divided into blocks, and each block has one or more encodable units. The encoding of at least one encodable unit of the second signal component is switchable between first and second modes. A method of encoding the signal comprises excluding, for at least one encodable unit of the second signal component, use of the second mode for the encoding of the second-signal-component encodable unit concerned when at least one predetermined condition is satisfied relating to an encoded block or encodable unit of the first signal component that corresponds to the second-signal-component encodable unit concerned.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: August 13, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Edouard Francois, Guillaume Laroche, Patrice Onno, Christophe Gisquet
  • Patent number: 10382792
    Abstract: Disclosed is a method of decoding a video signal. The method includes extracting an intra-prediction mode of a current block from a video signal, generating a prediction block according to the intra-prediction mode, performing a transform on the prediction block, performing a filtering on the transformed prediction block using a spatial correlation coefficient, and generating a reconstruction block based on the filtered prediction block and a residual block, wherein the spatial correlation coefficient is a value determined based on a direction of the intra-prediction mode.
    Type: Grant
    Filed: February 15, 2016
    Date of Patent: August 13, 2019
    Assignee: LG ELECTRONICS INC.
    Inventors: Chulkeun Kim, Jin Heo, Sehoon Yea
  • Patent number: 10368065
    Abstract: Various techniques and tools for encoding and decoding (e.g., in a video encoder/decoder) binary information (e.g., skipped macroblock information) are described. In some embodiments, the binary information is arranged in a bit plane, and the bit plane is coded at the picture/frame layer. The encoder and decoder process the binary information and, in some embodiments, switch coding modes. For example, the encoder and decoder use normal, row-skip, column-skip, or differential modes, or other and/or additional modes. In some embodiments, the encoder and decoder define a skipped macroblock as a predicted macroblock whose motion is equal to its causally predicted motion and which has zero residual error. In some embodiments, the encoder and decoder use a raw coding mode to allow for low-latency applications.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: July 30, 2019
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Sridhar Srinivasan, Pohsiang Hsu
  • Patent number: 10349053
    Abstract: An image processing device and method that enable suppression of an increase in the amount of coding of a scaling list. The image processing device sets a coefficient located at the beginning of a quantization matrix by adding a replacement difference coefficient that is a difference between a replacement coefficient used to replace a coefficient located at the beginning of the quantization matrix and the coefficient located at the beginning of the quantization matrix to the coefficient located at the beginning of the quantization matrix; up-converts the set quantization matrix; and dequantizes quantized data using an up-converted quantization matrix in which a coefficient located at the beginning of the up-converted quantization matrix has been replaced with the replacement coefficient. The device and method can be applied to an image processing device.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: July 9, 2019
    Assignee: SONY CORPORATION
    Inventors: Junichi Tanaka, Yoshitaka Morigami