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    METHOD FOR INTRA PREDICTION AND DEVICE THEREFOR
    1.
    发明公开
    METHOD FOR INTRA PREDICTION AND DEVICE THEREFOR 审中-公开

    公开(公告)号：EP3379833A1

    公开(公告)日：2018-09-26

    申请号：EP18172005.3

    申请日：2012-10-16

    申请人： LG Electronics Inc.

    发明人： LIM, Jaehyun ,  PARK, Seungwook ,  JEON, Yongjoon ,  KIM, Jungsun ,  HENDRY, Hendry ,  JEON, Byeongmoon ,  PARK, Joonyoung ,  KIM, Chulkeun ,  PARK, Naeri

    IPC分类号： H04N19/426 ,  H04N19/176 ,  H04N19/593 ,  H04N19/11 ,  H04N19/463

    CPC分类号： H04N19/593 ,  H04N7/26244 ,  H04N7/50 ,  H04N19/11 ,  H04N19/117 ,  H04N19/122 ,  H04N19/124 ,  H04N19/129 ,  H04N19/13 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/426 ,  H04N19/44 ,  H04N19/463 ,  H04N19/61 ,  H04N19/625 ,  H04N19/82 ,  H04N19/96

    摘要： An image decoding method by a decoding apparatus, the method comprising:
    deriving a first candidate intra prediction mode based on a left neighboring block of a current block, wherein when the left neighboring block is located outside of a current picture, the first candidate intra prediction mode is set equal to intra DC mode, wherein when the left neighboring block is not located in a current slice in which the current block is located, the first candidate intra prediction mode is set equal to the intra DC mode, wherein
    when the left neighboring block is not an intra coded block, the first candidate intra prediction mode is set equal to the intra DC mode;
    deriving a second candidate intra prediction mode based on an upper neighboring block of the current block, wherein when the upper neighboring block is located outside of the current picture, the second candidate intra prediction mode is set equal to the intra DC mode, wherein when the upper neighboring block is not located in the current slice, the second candidate intra prediction mode is set equal to the intra DC mode, wherein when the upper neighboring block is not located in a current largest coding unit (LCU) in which the current block is located, the second candidate intra prediction mode is set equal to the intra DC mode, wherein when the upper neighboring block is not an intra coded block, the second candidate intra prediction mode is set equal to the intra DC mode; determining intra prediction mode for the current block based on the first candidate intra prediction mode and the second candidate intra prediction mode; and generating prediction samples on the current block based on the determined intra prediction mode.

    OFFSET CALCULATION IN SWITCHED INTERPOLATION FILTERS
    3.
    发明公开
    OFFSET CALCULATION IN SWITCHED INTERPOLATION FILTERS 审中-公开
    偏移计算在连接插

    公开(公告)号：EP2342898A2

    公开(公告)日：2011-07-13

    申请号：EP09792842.8

    申请日：2009-09-22

    申请人： QUALCOMM Incorporated

    发明人： KARCZEWICZ, Marta ,  MOTTA, Giovanni ,  YE, Yan ,  PEISONG, Chen

    IPC分类号： H04N7/36

    CPC分类号： H04N7/50 ,  H04N19/172 ,  H04N19/176 ,  H04N19/52 ,  H04N19/523 ,  H04N19/577 ,  H04N19/61

    摘要： This disclosure describes techniques for adding offset to predictive video blocks during video coding. In one example, a method of encoding a video block includes interpolating a first block of predictive values based on a first reference video unit within a first list of reference data, and a second block of predictive values based on a second reference video unit within a second list of reference data, calculating, for sub-integer pixel positions, a first offset value based on the first block and the current video block, and a second offset value based on the first offset value and the second block, determining a final block of offset values based on the first block of predictive values, the second block of predictive values, the first offset values, and the second offset values, and encoding the current video block based on the final block of offset values.

    Video coding
    6.
    发明公开
    Video coding 审中-公开
    视频编码

    公开(公告)号：EP2059049A1

    公开(公告)日：2009-05-13

    申请号：EP07254407.5

    申请日：2007-11-07

    申请人： British Telecommunications public limited company

    发明人： The designation of the inventor has not yet been filed

    IPC分类号： H04N7/26 ,  H04N7/50

    CPC分类号： H04N7/50 ,  H04N19/124 ,  H04N19/15 ,  H04N19/154 ,  H04N19/177 ,  H04N19/194 ,  H04N19/61

    摘要： A sequence to be encoded is divided into a plurality of temporal portions or chunks. The sequence is then analysed to determine for each chunk, in accordance with a plurality of encoding quality settings, data establishing the relationship between the quality settings and (i) a quality metric for the portion and (ii) the number of bits generated by encoding the portion at that quality setting. Given a target quality, a target bit rate is then set (or vice versa); then one chooses a set of quality settings, one per chunk, that tends to minimise a combined quality cost for the sequence within the constraint that transmission of encoded video at the target bit rate via transmitting and receiving buffers of specified size and initial receiver buffer fullness shall not cause underflow nor overflow. The combined quality cost is the sum of individual quality costs each of which is a function of the deviation of the quality metric of the respective encoded portion from the target quality, the function being such that the cost generally increases as the absolute value of the deviation increases. The sequence is then encoded using the chosen quality settings.

    摘要翻译： 将要被编码的序列被分成多个时间部分或组块。 然后分析该序列以根据多个编码质量设置为每个块确定建立质量设置与（i）该部分的质量度量和（ii）通过编码生成的比特的数量之间的关系的数据 该质量设置的部分。 给定目标质量，然后设置目标比特率（反之亦然）; 则选择一组质量设置，每个块一个，其倾向于在通过具有指定大小的发送和接收缓冲器以及初始接收器缓冲器充满度的经编码视频以目标比特率的传输的约束内使序列的组合质量成本最小化 不得引起下溢或溢出。 组合的质量成本是各个质量成本的总和，每个质量成本是相应编码部分的质量度量与目标质量的偏差的函数，函数使得成本通常随着偏差的绝对值而增加 增加。 然后使用所选的质量设置对序列进行编码。