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    • 26. 发明授权
    • Method and apparatus for encoding an intra-prediction mode using variable length codes, and recording medium for same
    • 使用可变长度码对帧内预测模式进行编码的方法和装置以及用于其的记录介质
    • US08837845B2
    • 2014-09-16
    • US13391497
    • 2010-08-18
    • Sunyeon KimJeongyeon LimYoonsik ChoeYungho ChoiYonggoo KimJongho Kim
    • Sunyeon KimJeongyeon LimYoonsik ChoeYungho ChoiYonggoo KimJongho Kim
    • G06K9/36H04N19/00
    • H04N7/26H04N19/11H04N19/13H04N19/147H04N19/157H04N19/176H04N19/196H04N19/46H04N19/593H04N19/61
    • The disclosure relates to a method, apparatus, and recording medium for encoding an intra-prediction mode of an image using variable length codes, including: determining an intra prediction mode of a current block; determining an intra prediction mode having smallest mode number among intra prediction modes of encoded adjacent blocks as Most Probable Mode; generating and allocating variable length codes in ascending order from shorter code with higher similarity for directivity with MPM for all intra-prediction modes; and encoding intra prediction mode of current block based on allocated variable length codes, and thereby generates efficient variable length codes in consideration of high correlation in the intra-prediction modes of current block and peripheral blocks even if intra-prediction mode of current block does not match MPM derived with reference to peripheral blocks, and efficiently compressing information on intra-prediction mode of current block using variable length codes, thereby improving intra video encoding performance.
    • 本公开涉及一种用于使用可变长度码对图像的帧内预测模式进行编码的方法,装置和记录介质,包括:确定当前块的帧内预测模式; 将编码的相邻块的帧内预测模式中的最小模式数的帧内预测模式确定为最可能模式; 从针对所有帧内预测模式的MPM的方向性具有较高相似性的较短代码的升序生成和分配可变长度代码; 并且基于分配的可变长度码来对当前块的帧内预测模式进行编码,从而在当前块和外围块的帧内预测模式中考虑到高相关性生成有效的可变长度码,即使当前块的帧内预测模式不 匹配MPM,并使用可变长度代码高效地压缩当前块的帧内预测模式信息,从而提高帧内视频编码性能。
    • 28. 发明申请
    • METHOD AND APPARATUS FOR MOTION VECTOR ENCODING/DECODING USING SPATIAL DIVISION, AND METHOD AND APPARATUS FOR IMAGE ENCODING/DECODING USING SAME
    • 使用空间分割的运动矢量编码/解码的方法和装置,以及使用其进行图像编码/解码的方法和装置
    • US20120275522A1
    • 2012-11-01
    • US13504812
    • 2010-10-01
    • Sunyeon KimJeongyeon LimGyumin LeeJaehoon ChoiYoonsik ChoeYungho ChoiYonggoo Kim
    • Sunyeon KimJeongyeon LimGyumin LeeJaehoon ChoiYoonsik ChoeYungho ChoiYonggoo Kim
    • H04N7/32
    • H04N19/567H04N19/52
    • The present disclosure relates to a method and apparatus for motion vector encoding/decoding using spatial division, and to a method and apparatus for image encoding/decoding using same, wherein the motion vector encoding method includes: aggregating predicted motion vector candidates of a current block into a plurality of groups; selecting representative predicted motion vectors for respective groups by selecting one of aggregated predicted motion vector candidates within the respective groups as representative predicted motion vector; selecting single representative predicted motion vector from the representative predicted motion vectors for the respective groups as a predicted motion vector; and encoding a differential vector representing difference between a current motion vector of the current block and a selected predicted motion vector. The disclosure suppresses an increase in bit rate caused by encoding side information for indicating which predictor motion vector is selected while is reducing the size of the differential vector to be encoded.
    • 本发明涉及一种使用空间划分的运动矢量编码/解码的方法和装置,以及使用其进行图像编码/解码的方法和装置,其中运动矢量编码方法包括:聚合当前块的预测运动矢量候选 分成多个组; 通过选择各组内的聚合预测运动矢量候选中的一个作为代表性预测运动矢量来选择各组的代表性预测运动矢量; 从各组的代表性预测运动矢量中选择单个代表性预测运动矢量作为预测运动矢量; 以及编码表示当前块的当前运动矢量与选择的预测运动矢量之间的差的差分矢量。 该公开抑制了由编码侧信息引起的用于指示哪个预测器运动矢量被选择同时减少要编码的差分矢量的大小引起的比特率的增加。