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    Method and apparatus for entropy encoding/decoding
    2.
    发明授权
    Method and apparatus for entropy encoding/decoding 失效
    用于熵编码/解码的方法和装置

    公开(公告)号：US08345752B2

    公开(公告)日：2013-01-01

    申请号：US11780990

    申请日：2007-07-20

    申请人： Bae-Keun Lee ,  Kyo-Hyuk Lee ,  Woo-Jin Han

    发明人： Bae-Keun Lee ,  Kyo-Hyuk Lee ,  Woo-Jin Han

    IPC分类号： H04N7/12

    CPC分类号： H04N19/34 ,  H04N19/124 ,  H04N19/187 ,  H04N19/61

    摘要： A method and apparatus are provided for performing entropy encoding on a fine granular scalability layer. A method of entropy encoding on a plurality of current coefficients of a quality layer among a plurality of quality layers of an image block divided into the plurality of quality layers, includes determining a coding pass with respect to each of the current coefficients, selecting a context model with respect to each of the current coefficients using at least one lower coefficient corresponding to each of the current coefficients if the coding pass is a refinement pass, and performing arithmetic encoding a group of coefficients having a same selected context model among the current coefficients by using the selected context model.

    摘要翻译： 提供了一种在细粒度可伸缩性层上进行熵编码的方法和装置。 对分割为多个质量层的图像块的多个质量层中的质量层的多个当前系数进行熵编码的方法包括确定关于每个当前系数的编码遍，选择上下文 使用与当前系数中的每一个相对应的至少一个较低系数的当前系数中的每一个的模型，并且在当前系数中对具有相同的所选上下文模型的一组系数进行算术编码， 使用所选择的上下文模型。

    METHOD AND APPARATUS FOR EFFECTIVELY COMPRESSING MOTION VECTORS IN VIDEO CODER BASED ON MULTI-LAYER
    3.
    发明申请
    METHOD AND APPARATUS FOR EFFECTIVELY COMPRESSING MOTION VECTORS IN VIDEO CODER BASED ON MULTI-LAYER 有权
    用于有效压缩基于多层视频编码器的运动矢量的方法和装置

    公开(公告)号：US20120189061A1

    公开(公告)日：2012-07-26

    申请号：US13355619

    申请日：2012-01-23

    申请人： Woo-jin HAN ,  Kyo-hyuk LEE ,  Jae-young LEE ,  Sang-chang CHA ,  Bae-keun LEE ,  Ho-jin HA

    发明人： Woo-jin HAN ,  Kyo-hyuk LEE ,  Jae-young LEE ,  Sang-chang CHA ,  Bae-keun LEE ,  Ho-jin HA

    IPC分类号： H04N7/34 ,  H04N7/36

    CPC分类号： H04N19/577 ,  H04N19/31 ,  H04N19/51 ,  H04N19/517

    摘要： A method and apparatus of improving the compression efficiency of a motion vector is provided. The method includes obtaining a motion vector in a base layer frame having a first frame rate from an input frame, obtaining a motion vector in a first enhancement layer frame having a second frame rate from the input frame, the second frame rate being greater than the first frame rate, generating a predicted motion vector by referring to a motion vector for at least one frame among base layer frames present immediately before and after the same temporal position as the first enhancement layer frame if there is no base layer frame at the same temporal position as the first enhancement layer frame, and coding a difference between the motion vector in the first enhancement layer frame and the generated predicted motion vector, and the obtained motion vector in the base layer.

    摘要翻译： 提供了提高运动矢量的压缩效率的方法和装置。 该方法包括从输入帧获得具有第一帧速率的基本层帧中的运动矢量，从输入帧获得具有第二帧速率的第一增强层帧中的运动矢量，第二帧速率大于 第一帧速率，如果在相同时刻没有基本层帧的情况下，通过参考紧邻在与第一增强层帧相同的时间位置之前和之后的基本层帧中的至少一个帧的运动矢量来生成预测的运动矢量 位置作为第一增强层帧，并且编码第一增强层帧中的运动矢量与生成的预测运动矢量之间的差，以及所获得的基本层中的运动矢量。

    METHOD AND APPARATUS FOR ENCODING AND DECODING TRANSFORM COEFFICIENTS
    4.
    发明申请
    METHOD AND APPARATUS FOR ENCODING AND DECODING TRANSFORM COEFFICIENTS 有权
    编码和解码变换系数的方法和装置

    公开(公告)号：US20090232204A1

    公开(公告)日：2009-09-17

    申请号：US12397768

    申请日：2009-03-04

    申请人： Bae-keun Lee ,  Jianle Chen

    发明人： Bae-keun Lee ,  Jianle Chen

    IPC分类号： H04N7/12

    CPC分类号： H04N19/86 ,  H04N19/107 ,  H04N19/13 ,  H04N19/136 ,  H04N19/146 ,  H04N19/176 ,  H04N19/18 ,  H04N19/82

    摘要： A method of encoding transform coefficients and a transform coefficient encoding apparatus, and a method of decoding transform coefficients and a transform coefficient decoding apparatus are provided. The method of encoding the transform coefficients includes reading transform coefficients in a current block, determining whether a first transform coefficient having an absolute value greater than a predetermined threshold value exists in the transform coefficients in the current block, generating first flag information indicating whether the first transform coefficient exists, dividing the first transform coefficient from information of a second transform coefficient that is remaining transform coefficients excluding the first transform coefficient, and encoding the first transform coefficients and the second transform coefficients separately, thereby more efficiently using a correlation between each of the transform coefficients.

    摘要翻译： 提供编码变换系数的方法和变换系数编码装置，以及解码变换系数的方法和变换系数解码装置。 编码变换系数的方法包括读取当前块中的变换系数，确定在当前块中的变换系数中是否存在绝对值大于预定阈值的第一变换系数，生成表示第一 存在变换系数，将第一变换系数与除第一变换系数之外的剩余变换系数的第二变换系数的信息相分离，并且分别对第一变换系数和第二变换系数进行编码，从而更有效地使用 变换系数。

    Method and apparatus for enhancing performance of entropy coding, and video coding method and apparatus using the entropy coding performance enhancing method
    5.
    发明授权
    Method and apparatus for enhancing performance of entropy coding, and video coding method and apparatus using the entropy coding performance enhancing method 有权
    用于增强熵编码性能的方法和装置，以及使用熵编码性能增强方法的视频编码方法和装置

    公开(公告)号：US07348903B2

    公开(公告)日：2008-03-25

    申请号：US11486175

    申请日：2006-07-14

    申请人： Bae-keun Lee ,  Woo-jin Han

    发明人： Bae-keun Lee ,  Woo-jin Han

    IPC分类号： H03M7/40

    CPC分类号： H03M7/4006 ,  H04N19/13 ,  H04N19/18 ,  H04N19/184 ,  H04N19/34

    摘要： A method and apparatus for enhancing the performance of entropy coding in a multilayer-based codec system are provided. In a variable length coding method for lossless-coding first coefficients among coefficients of a discrete layer and one or more fine granular scalability (FGS) layers, the variable length coding method includes determining a proportion of zeros included in a predetermined unit region to which the first coefficients belong, selecting one of a plurality of grouping units depending on whether or not the proportion exceeds a predetermined threshold, grouping absolute values of the first coefficients using the selected grouping unit, and transforming the grouped absolute values into a code word mapped thereto by referring to a VLC table corresponding to the selected group unit.

    摘要翻译： 提供了一种用于在基于多层的编解码系统中增强熵编码性能的方法和装置。 在可变长度编码方法中，对离散层和一个或多个细粒度可伸缩性（FGS）层的系数中的第一系数进行无损编码，所述可变长度编码方法包括确定包括在预定单位区域中的零比例， 第一系数属于，根据比例是否超过预定阈值来选择多个分组单元之一，使用所选择的分组单元分组第一系数的绝对值，并将分组的绝对值转换成由 参考对应于所选择的组单元的VLC表。

    Method of encoding flag, method of decoding flag, and apparatus thereof
    6.
    发明申请
    Method of encoding flag, method of decoding flag, and apparatus thereof 有权
    编码标志的方法，标志的解码方法及其装置

    公开(公告)号：US20070160302A1

    公开(公告)日：2007-07-12

    申请号：US11599484

    申请日：2006-11-15

    申请人： Woo-jin Han ,  Bae-keun Lee ,  Tammy Lee ,  Kyo-hyuk Lee

    发明人： Woo-jin Han ,  Bae-keun Lee ,  Tammy Lee ,  Kyo-hyuk Lee

    IPC分类号： G06K9/46

    CPC分类号： H04N19/187 ,  H04N19/176 ,  H04N19/196 ,  H04N19/30 ,  H04N19/463 ,  H04N19/593 ,  H04N19/61 ,  H04N19/91

    摘要： A method of encoding flags, a method of decoding flags and an apparatus thereof, in which flag encoding and decoding can be efficiently performed by using spatial correlation between various flags included a plurality of blocks are provided. The method includes collecting flag values respectively allocated to groups of the plurality of blocks according to spatial correlation of blocks to create a flag bit-string, dividing the flag bit-string into a plurality of divided bit-strings using a group size, setting a pattern bit indicating whether all bits included in the divided bit-strings are 0 or not, and performing entropy coding on the divided bit-strings according to the set pattern bit.

    摘要翻译： 提供一种编码标志的方法，一种解码标志的方法及其装置，其中可以通过使用包括多个块的各种标志之间的空间相关性来有效地执行标志编码和解码。 该方法包括根据块的空间相关性分别分配分配给多个块的组的标志值，以创建标志位串，使用组大小将标志位串划分成多个划分的位串，将 模式比特，指示分割的比特串中包含的所有比特是否为0，并根据所设置的模式比特对分割的比特串进行熵编码。

    Method and apparatus for encoding and decoding video signal depending on characteristics of coefficients included in block of FGS layer
    7.
    发明申请
    Method and apparatus for encoding and decoding video signal depending on characteristics of coefficients included in block of FGS layer 审中-公开
    根据FGS层块中包含的系数的特征对视频信号进行编码和解码的方法和装置

    公开(公告)号：US20070133676A1

    公开(公告)日：2007-06-14

    申请号：US11590833

    申请日：2006-11-01

    申请人： Bae-keun Lee ,  Woo-jin Han

    发明人： Bae-keun Lee ,  Woo-jin Han

    IPC分类号： H04B1/66 ,  H04N7/12

    CPC分类号： H04N19/34 ,  H04N19/136 ,  H04N19/176 ,  H04N19/18 ,  H04N19/187 ,  H04N19/61 ,  H04N19/70 ,  H04N19/91 ,  H04N19/93

    摘要： Encoding and decoding video signals according to the characteristics of coefficients included in the block of a fine granularity scalability layer is provided. Non-unitary coefficients that constitute the block and have absolute values that are not 0 or 1 are extracted from the video signal, a representative value from run values of the extracted non-unitary coefficients is calculated, the run values of the coefficients constituting the block and the representative value are compared, and codewords are assigned to the coefficients according to a result of the comparison.

    摘要翻译： 提供根据包含在细粒度可伸缩层的块中的系数的特性对视频信号进行编码和解码。 从视频信号中提取构成块并且具有不为0或1的绝对值的非单位系数，计算提取的非单位系数的运行值的代表值，构成块的系数的运行值 并比较代表值，根据比较结果将码字分配给系数。

    Scalable video coding and decoding methods, and scalable video encoder and decoder
    9.
    发明申请
    Scalable video coding and decoding methods, and scalable video encoder and decoder 审中-公开
    可扩展的视频编码和解码方法，以及可扩展的视频编码器和解码器

    公开(公告)号：US20050047509A1

    公开(公告)日：2005-03-03

    申请号：US10925013

    申请日：2004-08-25

    申请人： Bae-keun Lee ,  Ho-jin Ha ,  Woo-jin Han ,  Jae-young Lee

    发明人： Bae-keun Lee ,  Ho-jin Ha ,  Woo-jin Han ,  Jae-young Lee

    IPC分类号： H04N7/32 ,  H04N7/12 ,  H04N7/26

    CPC分类号： H04N19/615 ,  H04N19/115 ,  H04N19/124 ,  H04N19/13 ,  H04N19/146 ,  H04N19/61 ,  H04N19/63

    摘要： Scalable video coding and decoding methods, a scalable video encoder, and a scalable video decoder. The scalable video coding method includes receiving a GOP, performing temporal filtering and spatial transformation thereon, quantizing and generating a bitstream. The scalable video encoder for performing the scalable video coding method includes a weight determination block which determines a weight for scaling. The scalable video decoding method includes dequantizing the coded image information obtained from a received bitstream, performing descaling, inverse spatial transformation, and inverse temporal filtering on the scaled transform coefficients, thereby recovering video frames. The scalable video decoder for performing the scalable video decoding method includes an inverse weighting block. The standard deviation of Peak Signal to Noise Ratios (PSNRs) of frames included in a group of pictures (GOP) is reduced so that video coding performance can be increased.

    摘要翻译： 可扩展视频编码和解码方法，可分级视频编码器和可伸缩视频解码器。 可分级视频编码方法包括接收GOP，对其进行时间滤波和空间变换，量化和生成比特流。 用于执行可伸缩视频编码方法的可分级视频编码器包括确定缩放权重的权重确定块。 可分级视频解码方法包括对从接收到的比特流获得的编码图像信息进行去量化，对经缩放的变换系数执行除鳞，逆空间变换和逆时间滤波，从而恢复视频帧。 用于执行可分级视频解码方法的可分级视频解码器包括反向加权块。 降低包括在一组图像（GOP）中的帧的峰值信号与噪声比（PSNR）的标准偏差，从而可以增加视频编码性能。