公开(公告)号：US08165207B2

公开(公告)日：2012-04-24

申请号：US13020567

申请日：2011-02-03

申请人： Sang-chang Cha ,  Woo-jin Han

发明人： Sang-chang Cha ,  Woo-jin Han

IPC分类号： H04N7/12

CPC分类号： H04N19/33 ,  H04N19/107 ,  H04N19/11 ,  H04N19/147 ,  H04N19/159 ,  H04N19/176 ,  H04N19/187 ,  H04N19/19 ,  H04N19/196 ,  H04N19/46 ,  H04N19/463

摘要： A method and apparatus are provided for effectively predicting a video frame that use all of the advantages of an intra mode and an intra BL mode in multi-layer structure based-video coding. The method includes reconstructing the intra block of a lower layer using the previously reconstructed first neighboring blocks of the intra block; subtracting the first neighboring blocks from previously stored the second neighboring blocks of an upper layer corresponding to the first neighboring blocks; creating a differential predicted block based on a predetermined intra prediction mode by performing intra prediction using virtual differential neighboring blocks that are created as a result of the subtraction; adding the differential predicted block and the reconstructed intra block; and subtracting a predicted block, which is created as a result of the addition, from a block of the upper layer corresponding to the intra block.

摘要翻译： 提供了一种用于在基于多层结构的视频编码中有效地预测使用帧内模式和帧内BL模式的所有优点的视频帧的方法和装置。 该方法包括使用先前重构的帧内块的第一相邻块来重建下层的块内块; 从先前存储的与第一相邻块对应的上层的第二相邻块中减去第一相邻块; 通过使用作为减法的结果创建的虚拟差分相邻块来执行帧内预测，​​基于预定的帧内预测模式创建差分预测块; 添加差分预测块和重构块内块; 并从对应于帧内块的上层的块中减去作为相加结果而生成的预测块。

公开(公告)号：US20120039387A1

公开(公告)日：2012-02-16

申请号：US13235012

申请日：2011-09-16

申请人： Ho-Jin HA ,  Sang-Chang Cha ,  Woo-Jin Han

发明人： Ho-Jin HA ,  Sang-Chang Cha ,  Woo-Jin Han

IPC分类号： H04N7/36

CPC分类号： H04N19/53 ,  H04N19/52

摘要： A motion vector compression apparatus includes: a down-sampling module for down-sampling an original frame to have a size of a frame in each layer; a motion vector search module for obtaining a motion vector in which an error or a cost function is minimized with respect to the down-sampled frame; a reference vector generation module for generating a reference motion vector in a predetermined enhanced layer by means of a block of a lower layer corresponding to a predetermined block in the predetermined enhanced layer, and motion vectors in blocks around the block; and a motion difference module for calculating a difference between the obtained motion vector and the reference motion vector.

摘要翻译： 运动矢量压缩装置包括：下采样模块，用于对原始帧进行下采样以具有每层中的帧的大小; 运动矢量搜索模块，用于获得相对于下采样帧最小化误差或成本函数的运动矢量; 参考矢量生成模块，用于通过与预定增强层中的预定块相对应的下层的块和在块周围的块中的运动矢量来生成预定增强层中的参考运动矢量; 以及用于计算所获得的运动矢量和参考运动矢量之间的差的运动差分模块。

公开(公告)号：US08040950B2

公开(公告)日：2011-10-18

申请号：US11094201

申请日：2005-03-31

申请人： Ho-Jin Ha ,  Sang-Chang Cha ,  Woo-Jin Han

发明人： Ho-Jin Ha ,  Sang-Chang Cha ,  Woo-Jin Han

IPC分类号： H04N7/12

CPC分类号： H04N19/53 ,  H04N19/52

摘要： A method and an apparatus for elevating compression efficiency of a motion vector by effectively predicting a motion vector of an enhanced layer by means of a motion vector of a base layer in a video coding method employing a multi-layer structure are disclosed. A motion vector compression apparatus includes: a down-sampling module for down-sampling an original frame to have a size of a frame in each layer; a motion vector search module for obtaining a motion vector in which an error or a cost function is minimized with respect to the down-sampled frame; a reference vector generation module for generating a reference motion vector in a predetermined enhanced layer by means of a block of a lower layer corresponding to a predetermined block in the predetermined enhanced layer, and motion vectors in blocks around the block; and a motion difference module for calculating a difference between the obtained motion vector and the reference motion vector.

摘要翻译： 公开了一种通过在采用多层结构的视频编码方法中借助于基本层的运动矢量有效地预测增强层的运动矢量来提高运动矢量的压缩效率的方法和装置。 运动矢量压缩装置包括：下采样模块，用于对原始帧进行下采样以具有每层中的帧的大小; 运动矢量搜索模块，用于获得相对于下采样帧最小化误差或成本函数的运动矢量; 参考矢量生成模块，用于通过与预定增强层中的预定块相对应的下层的块和在块周围的块中的运动矢量来生成预定增强层中的参考运动矢量; 以及用于计算所获得的运动矢量和参考运动矢量之间的差的运动差分模块。

公开(公告)号：US20110110432A1

公开(公告)日：2011-05-12

申请号：US13005990

申请日：2011-01-13

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： H04N7/32

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 by efficiently predicting a motion vector in an enhancement layer from a motion vector in a base layer in a video coding method using a multi-layer are 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： 提供一种通过使用多层的视频编码方法从基层中的运动矢量有效地预测增强层中的运动矢量来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存在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。

公开(公告)号：US07813569B2

公开(公告)日：2010-10-12

申请号：US10647254

申请日：2003-08-26

申请人： Jong-hak Ahn ,  Sang-chang Cha

发明人： Jong-hak Ahn ,  Sang-chang Cha

IPC分类号： G06K9/36 ,  G06K9/46

CPC分类号： H04N19/127 ,  H04N19/136 ,  H04N19/137 ,  H04N19/176 ,  H04N19/18 ,  H04N19/51 ,  H04N19/61 ,  H04N19/90

摘要： An MPEG video decoding method and an MPEG video decoder are provided. The method includes determining whether to perform motion compensation on motion-vector-decoded data or not depending on a value of a decoded motion vector, determining whether to perform inverse discrete cosine transformation (IDCT) on motion-compensated data or not depending on values of decoded DCT coefficients, and generating a decoded image based on the results of the two determinations.

摘要翻译： 提供MPEG视频解码方法和MPEG视频解码器。 该方法包括根据解码的运动矢量的值确定是否对运动矢量解码数据执行运动补偿，确定是否根据运动补偿数据执行逆离散余弦变换（IDCT） 解码的DCT系数，并且基于两次确定的结果生成解码图像。

公开(公告)号：US20070065005A1

公开(公告)日：2007-03-22

申请号：US11601638

申请日：2006-11-20

申请人： Sang-chang Cha ,  Manu Mathew ,  Kyo-hyuk Lee

发明人： Sang-chang Cha ,  Manu Mathew ,  Kyo-hyuk Lee

IPC分类号： G06K9/36 ,  G06K9/00

CPC分类号： H04N19/34 ,  H04N19/124 ,  H04N19/164 ,  H04N19/186 ,  H04N19/33 ,  H04N19/61 ,  H04N19/70

摘要： A color space scalable video coding and decoding method and an apparatus for the same are disclosed that can adjust color components or color depth according to the performance of a decoder side. The color space scalable video coding method includes generating transform coefficients by removing the temporal redundancy and spatial redundancy of input video frames, quantizing the transform coefficients, generating a bit stream by entropy coding the quantized transform coefficients, and generating a color space scalable bit stream that includes the bit stream and position information of luminance data in the bit stream.

摘要翻译： 公开了可以根据解码器侧的性能来调整颜色分量或颜色深度的颜色空间可分级视频编码和解码方法及其装置。 颜色空间可分级视频编码方法包括通过去除输入视频帧的时间冗余和空间冗余来产生变换系数，量化变换系数，通过对量化变换系数进行熵编码产生比特流，以及生成颜色空间可缩放比特流， 在比特流中包括比特流和亮度数据的位置信息。

公开(公告)号：US20070025448A1

公开(公告)日：2007-02-01

申请号：US11483646

申请日：2006-07-11

申请人： Sang-chang Cha ,  Kyo-hyuk Lee ,  Bae-keun Lee ,  Woo-jin Han ,  Jae-young Lee ,  Ho-jin Ha

发明人： Sang-chang Cha ,  Kyo-hyuk Lee ,  Bae-keun Lee ,  Woo-jin Han ,  Jae-young Lee ,  Ho-jin Ha

IPC分类号： H04N11/04 ,  H04B1/66

CPC分类号： H04N19/86 ,  H04N19/117 ,  H04N19/159 ,  H04N19/176 ,  H04N19/61

摘要： Deblocking filter used in a video encoder/decoder based on a multilayer. In deciding a deblocking filter strength when performing a deblocking filtering with respect to a boundary between a current block coded by an intra-BL mode and its neighboring block, it is determined whether the current block or the neighboring block has coefficients. The filter strength is decided as a first filter strength if it is determined that the current block or the neighboring block has the coefficients, and the filter strength is decided as a second filter strength if it is determined that the current block or the neighboring block does not have the coefficients. The first filter strength is greater than the second filter strength.

摘要翻译： 基于多层的视频编码器/解码器中使用的去块滤波器。 在对由BL模式编码的当前块与其相邻块之间的边界执行解块滤波时，决定解块滤波器强度时，确定当前块或相邻块是否具有系数。 如果确定当前块或相邻块具有系数，则将滤波器强度确定为第一滤波器强度，并且如果确定当前块或相邻块确定了滤波器强度，则将滤波器强度确定为第二滤波器强度 没有系数。 第一过滤强度大于第二过滤强度。

公开(公告)号：US20070019726A1

公开(公告)日：2007-01-25

申请号：US11490035

申请日：2006-07-21

申请人： Sang-chang Cha ,  Kyo-hyuk Lee ,  Woo-jin Han

发明人： Sang-chang Cha ,  Kyo-hyuk Lee ,  Woo-jin Han

IPC分类号： H04N7/12 ,  H04N11/04

CPC分类号： H04N19/187 ,  H04N19/11 ,  H04N19/124 ,  H04N19/136 ,  H04N19/176 ,  H04N19/30 ,  H04N19/593

摘要： A method and apparatus for encoding and decoding a video signal by extending an application of directional intra-prediction. When performing a directional intra-prediction during video data encoding, a second block in a frame is searched in order to predict information of a first block included in the video data from the second block existing in the same frame as the first block, a residual between information included in the searched second block and the information included in the first block is calculated, and the calculated residual is encoded. The second block exists in a position adjacent to the first block, and the first block refers to the second block in a third direction existing between a first direction and a second direction that are adjacent to each other for use in the directional intra-prediction.

摘要翻译： 一种通过扩展定向帧内预测的应用来对视频信号进行编码和解码的方法和装置。 当在视频数据编码期间执行定向帧内预测时，搜索帧中的第二块以便从与第一块相同的帧中存在的第二块中预测包括在视频数据中的第一块的信息，剩余 计算包括在搜索到的第二块中的信息和包括在第一块中的信息之间，并且对所计算的残差进行编码。 第二块存在于与第一块相邻的位置，并且第一块是指存在于彼此相邻的第一方向和第二方向之间的第三方向上的第二块，用于定向帧内预测。

公开(公告)号：US20060233250A1

公开(公告)日：2006-10-19

申请号：US11402860

申请日：2006-04-13

申请人： Sang-chang Cha ,  Woo-jin Han

发明人： Sang-chang Cha ,  Woo-jin Han

IPC分类号： H04N7/12

CPC分类号： H04N19/187 ,  H04N19/105 ,  H04N19/176 ,  H04N19/30 ,  H04N19/61

摘要： A method and apparatus for encoding and decoding macroblocks in an intra-base layer prediction mode by selectively applying intra-coding are provided. The method includes the steps of calculating a difference between an input frame and a base layer frame calculated from the input frame and obtaining residual signals, converting the residual signals using an intra-coding method, and generating an enhancement layer frame including the converted residual signals.

摘要翻译： 提供了一种通过选择性地应用帧内编码来对基站内预测模式中的宏块进行编码和解码的方法和装置。 该方法包括以下步骤：计算从输入帧计算出的输入帧和基本层帧之间的差异，并获得残余信号，使用帧内编码方法转换残余信号，以及生成包括转换的残留信号的增强层帧 。

公开(公告)号：US20060232454A1

公开(公告)日：2006-10-19

申请号：US11405573

申请日：2006-04-18

申请人： Sang-chang Cha ,  Woo-jin Han

发明人： Sang-chang Cha ,  Woo-jin Han

IPC分类号： H03M7/34

CPC分类号： H04N19/615 ,  H04N19/13 ,  H04N19/15 ,  H04N19/174 ,  H04N19/187 ,  H04N19/61 ,  H04N19/63

摘要： Context-based adaptive arithmetic coding and decoding methods and apparatuses with improved coding efficiency and video coding and decoding methods and apparatuses using the same are provided. The method for performing context-based adaptive arithmetic coding on a given slice in an enhancement layer frame of a video signal having a multi-layered structure includes steps of resetting a context model for the given slice to a context model for a base layer slice at the same temporal position as the given slice, arithmetically coding a data symbol of the given slice using the reset context model, and updating the context model based on the value of the arithmetically coded data symbol.

摘要翻译： 提供了具有改进的编码效率的基于上下文的自适应算术编码和解码方法和装置以及使用其的视频编码和解码方法和装置。 在具有多层结构的视频信号的增强层帧中对给定切片进行基于上下文的自适应算术编码的方法包括以下步骤：将给定切片的上下文模型重置为基底层切片的上下文模型 与给定切片相同的时间位置，使用重置上下文模型对给定切片的数据符号进行算术编码，以及基于算术编码的数据符号的值来更新上下文模型。