公开(公告)号：US20060245495A1

公开(公告)日：2006-11-02

申请号：US11410955

申请日：2006-04-26

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

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

IPC分类号： H04N11/04

CPC分类号： H04N19/34 ,  H04N19/187

摘要： A method for reducing the amount of computations required for multilayer-based progressive fine granular scalability (PFGS) algorithm and a video coding method and apparatus employing the same method are provided. The video coding method supporting fine granular scalability (FGS) includes obtaining a predicted image for a current frame using a motion vector estimated at predetermined accuracy, quantizing a residual between the current frame and the predicted image, inversely quantizing the quantized residual, and generating a reconstructed image for the current frame, performing motion compensation on an FGS layer reference frame and a base layer reference frame using the estimated motion vector, calculating a residual between the motion-compensated FGS layer reference frame and the motion-compensated base layer reference frame, subtracting the reconstructed image for the current frame and the calculated residual from the current frame, and encoding the result of subtraction.

摘要翻译： 提供了一种用于减少基于多层的逐行细粒度可缩放性（PFGS）算法所需的计算量和采用相同方法的视频编码方法和装置的方法。 支持精细粒度可缩放性（FGS）的视频编码方法包括使用以预定精度估计的运动矢量获取当前帧的预测图像，量化当前帧与预测图像之间的残差，逆量化量化残差，并产生 用于当前帧的重建图像，使用估计的运动矢量在FGS层参考帧和基本层参考帧上执行运动补偿，计算运动补偿FGS层参考帧和运动补偿基础层参考帧之间的残差， 从当前帧减去当前帧的重建图像和计算出的残差，并对相减结果进行编码。

公开(公告)号：US20060233240A1

公开(公告)日：2006-10-19

申请号：US11402934

申请日：2006-04-13

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： H04N11/04 ,  H04B1/66 ,  H04N7/12 ,  H04N11/02

CPC分类号： H04N19/31 ,  H04N19/13 ,  H04N19/174 ,  H04N19/177 ,  H04N19/187 ,  H04N19/33

摘要： Context-based adaptive arithmetic coding and decoding methods and apparatuses with improved coding efficiency using the same are provided. The context-based adaptive arithmetic coding method includes resetting a context model for the given slice to a context model for a slice coded temporally before the given slice, arithmetically encoding a data symbol of the given slice using the reset context model, and updating the context model using a value of the data symbol. The context-based adaptive arithmetic decoding method includes resetting a context model for the given slice to a context model coded temporally before the given slice, arithmetically decoding a bitstream corresponding to the given slice using the reset context model to generate a data symbol of the given slice, and updating the context model using a value of the 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。 基于上下文的自适应算术编码方法包括将给定切片的上下文模型重置为在给定切片之前暂时编码的切片的上下文模型，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，以及更新上下文 模型使用数据符号的值。 基于上下文的自适应算术解码方法包括将给定切片的上下文模型重新设置为在给定切片之前暂时编码的上下文模型，使用复位上下文模型对对应于给定切片的比特流进行算术解码，以生成给定切片的数据符号 切片，并使用数据符号的值更新上下文模型。

公开(公告)号：US20060209961A1

公开(公告)日：2006-09-21

申请号：US11378357

申请日：2006-03-20

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

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

IPC分类号： H04N11/02 ,  H04N11/04 ,  H04B1/66 ,  H04N7/12

CPC分类号： H04N19/615 ,  H04N19/13 ,  H04N19/187 ,  H04N19/196 ,  H04N19/463 ,  H04N19/52 ,  H04N19/56 ,  H04N19/577 ,  H04N19/61 ,  H04N19/63

摘要： A video encoding/decoding method and apparatus is disclosed that can efficiently compress/decompress motion vectors in a video codec including a hierarchical temporal level decomposition process. The video encoding method including a hierarchical temporal level decomposition process involves obtaining a predicted motion vector of a second frame, which exists at a present temporal level, from a first motion vector of a first frame that exists at a lower temporal level; obtaining a second motion vector of the second frame by performing a motion estimation in a predetermined motion search area using the predicted motion vector as a start point; and encoding the second frame using the obtained second motion vector.

摘要翻译： 公开了可以有效地压缩/解压缩包括分层时间级别分解处理的视频编解码器中的运动矢量的视频编码/解码方法和装置。 包括分层时间级别分解处理的视频编码方法涉及从存在于较低时间级别的第一帧的第一运动矢量获得在当前时间级存在的第二帧的预测运动矢量; 通过使用预测的运动矢量作为起始点，在预定运动搜索区域中执行运动估计来获得第二帧的第二运动矢量; 以及使用所获得的第二运动矢量对所述第二帧进行编码。

公开(公告)号：US20060120450A1

公开(公告)日：2006-06-08

申请号：US11290515

申请日：2005-12-01

申请人： Woo-jin Han ,  Sang-chang Cha ,  Ho-jin Ha

发明人： Woo-jin Han ,  Sang-chang Cha ,  Ho-jin Ha

IPC分类号： H04N11/04 ,  H04B1/66 ,  H04N7/12 ,  H04N11/02

CPC分类号： H04N19/59 ,  H04N19/11 ,  H04N19/147 ,  H04N19/15 ,  H04N19/176 ,  H04N19/19 ,  H04N19/61 ,  H04N19/91

摘要： A video compression method, and more particularly, a prediction method for efficiently eliminating redundancy within a video frame, and a video compression method and an apparatus using the prediction method are provided. There is provided a method for encoding video based on a multi-layer structure, including performing intra-prediction on a current intra-block using images of neighboring intra-blocks of the current intra-block to obtain a prediction residual, performing prediction on the current intra-block using an image of a lower layer region corresponding to the current intra-block to obtain a prediction residual, selecting one of the two prediction residuals that offers higher coding efficiency, and encoding the selected prediction residual.

摘要翻译： 提供一种视频压缩方法，更具体地，提供一种用于有效消除视频帧内的冗余的预测方法以及使用该预测方法的视频压缩方法和装置。 提供了一种用于基于多层结构对视频进行编码的方法，包括使用当前帧内相邻帧内的图像对当前块内进行帧内预测，​​以获得预测残差，对 使用与当前帧内对应的下层区域的图像的当前帧内块来获得预测残差，选择提供更高编码效率的两个预测残差中的一个，并对所选择的预测残差进行编码。

公开(公告)号：US20060013311A1

公开(公告)日：2006-01-19

申请号：US11153410

申请日：2005-06-16

申请人： Woo-jin Han

发明人： Woo-jin Han

IPC分类号： H04N11/04

CPC分类号： H04N19/615 ,  H04N19/13 ,  H04N19/44 ,  H04N19/59 ,  H04N19/61 ,  H04N19/63 ,  H04N19/86

摘要： A method and apparatus for increasing output picture quality at a decoding terminal by using a smoothing filter are provided. The video decoding method includes generating a residual frame from an input bitstream, performing wavelet-based upsampling on the residual frame, performing non-wavelet-based downsampling on the upsampled frame, and performing inverse temporal filtering on the downsampled frame.

摘要翻译： 提供了一种通过使用平滑滤波器来增加解码终端的输出图像质量的方法和装置。 视频解码方法包括从输入比特流生成残差帧，对残差帧执行基于小波的上采样，对上采样帧执行基于小波的下采样，对下采样帧执行逆时间滤波。

公开(公告)号：US20060008006A1

公开(公告)日：2006-01-12

申请号：US11174633

申请日：2005-07-06

申请人： Sang-chang Cha ,  Woo-jin Han

发明人： Sang-chang Cha ,  Woo-jin Han

IPC分类号： H04B1/66 ,  H04N11/02 ,  H04N11/04 ,  H04N7/12

CPC分类号： H04N19/615 ,  H04N19/107 ,  H04N19/13 ,  H04N19/147 ,  H04N19/176 ,  H04N19/19 ,  H04N19/517 ,  H04N19/61 ,  H04N19/63 ,  H04N19/86

摘要： Video coding and decoding methods and video encoder and decoder are provided. The video encoding method includes determining one of inter predictive coding and intra predictive coding mode as a coding mode for each block in an input video frame, generating a predicted frame for the input video frame based on predicted blocks obtained according to the determined coding mode, and encoding the input video frame based on the predicted frame. When the intra predictive coding mode is determined as the coding mode, an intra basis block composed of representative values of a block is generated for a block and the intra basis block is interpolated to generate an intra predicted block for the block.

摘要翻译： 提供视频编码和解码方法以及视频编码器和解码器。 视频编码方法包括：将帧间预测编码和帧内预测编码模式之一确定为输入视频帧中的每个块的编码模式，基于根据所确定的编码模式获得的预测块生成用于输入视频帧的预测帧， 以及基于预测帧对输入视频帧进行编码。 当将帧内预测编码模式确定为编码模式时，为块生成由块的代表值组成的帧内基本块，并且内部基本块被内插以生成块的帧内预测块。

公开(公告)号：US20050157793A1

公开(公告)日：2005-07-21

申请号：US11034734

申请日：2005-01-14

申请人： Ho-jin Ha ,  Woo-jin Han

发明人： Ho-jin Ha ,  Woo-jin Han

IPC分类号： H04N7/24 ,  H04N7/12 ,  H04N7/26

CPC分类号： H04N19/615 ,  H04N19/13 ,  H04N19/61 ,  H04N19/63

摘要： A video encoder/decoder and method. The video coding method includes estimating a virtual frame, electing a reference frame from candidate frames including the virtual frame to remove temporal redundancy using the elected reference frame, coding a motion vector and predetermined information obtained in removing the temporal redundancy, and obtaining transform coefficients from the frames free from the temporal redundancy and quantizing the obtained transform coefficients to generate a bit-stream. The video decoding method includes receiving a bit-stream and parsing the received bit-stream to extract information on coded frames, inversely quantizing the information on the coded frames to obtain the transform coefficients, and performing inverse spatial transform of the obtained transform coefficients and inverse temporal transform by use of a reference frame including a virtual frame in inverse order to an order in which redundancy of the coded frames is removed and restoring the coded frames. As a result, it is possible to code the video at a higher compression rate.

摘要翻译： 视频编码器/解码器和方法。 视频编码方法包括估计虚拟帧，从包括虚拟帧的候选帧中选择参考帧，以使用所选择的参考帧去除时间冗余，对运动矢量进行编码以及在消除时间冗余时获得的预定信息，以及从 帧没有时间冗余并量化所获得的变换系数以产生比特流。 视频解码方法包括接收比特流并解析接收到的比特流以提取关于编码帧的信息，对编码帧的信息进行逆量化以获得变换系数，并对所获得的变换系数进行逆空间变换 通过使用包括虚拟帧的参考帧以与去除编码帧的冗余的顺序相反的顺序进行时间变换并恢复编码帧。 结果，可以以更高的压缩率对视频进行编码。

公开(公告)号：US20050117640A1

公开(公告)日：2005-06-02

申请号：US10998580

申请日：2004-11-30

申请人： Woo-jin Han

发明人： Woo-jin Han

IPC分类号： H04N7/24 ,  H04N7/12

CPC分类号： H04N19/615 ,  H04N19/13 ,  H04N19/31 ,  H04N19/61 ,  H04N19/63 ,  H04N19/85

摘要： Disclosed is a scalable video coding algorithm. A method for video coding includes temporally filtering frames in the same sequence to a decoding sequence thereof to remove temporal redundancy, obtaining and quantizing transformation coefficients from frames whose temporal redundancy is removed, and generating bitstreams. A video encoder comprises a temporal transformation unit, a spatial transformation unit, a quantization unit and a bitstream generation unit to perform the method. A method for video decoding is basically reverse in sequence to the video coding. A video decoder extracts information necessary for video decoding by interpreting the received bitstream and decoding it. Thus, video streams may be generated by allowing a decoder to decode the generated bitstreams, while maintaining the temporal scalability on an encoder-side.

摘要翻译： 公开了一种可扩展的视频编码算法。 一种用于视频编码的方法包括以与其解码序列相同的顺序对帧进行时间滤波，以去除时间冗余，从其时间冗余被去除的帧获得和量化变换系数，并生成比特流。 视频编码器包括时间变换单元，空间变换单元，量化单元和比特流生成单元，以执行该方法。 视频解码的方法基本上与视频编码相反。 视频解码器通过解释所接收的比特流并解码来提取视频解码所需的信息。 因此，可以通过允许解码器解码生成的比特流，同时保持编码器侧的时间可扩展性来生成视频流。

公开(公告)号：US09712822B2

公开(公告)日：2017-07-18

申请号：US13641403

申请日：2011-04-13

申请人： Woo-jin Han ,  Elena Alshina ,  Jung-hye Min ,  Alexander Alshin ,  Il-koo Kim ,  Nikolay Shlyakhov ,  Tammy Lee ,  Sun-il Lee ,  Min-su Cheon ,  Jianle Chen ,  Vadim Seregin ,  Yoon-mi Hong

发明人： Woo-jin Han ,  Elena Alshina ,  Jung-hye Min ,  Alexander Alshin ,  Il-koo Kim ,  Nikolay Shlyakhov ,  Tammy Lee ,  Sun-il Lee ,  Min-su Cheon ,  Jianle Chen ,  Vadim Seregin ,  Yoon-mi Hong

IPC分类号： H04N7/32 ,  H04N19/119 ,  H04N19/176 ,  H04N19/196 ,  H04N19/50 ,  H04N19/147 ,  H04N19/61 ,  H04N19/96 ,  H04N19/513 ,  H04N19/593 ,  H04N19/44 ,  H04N19/52 ,  H04N19/172

CPC分类号： H04N19/50 ,  H04N19/117 ,  H04N19/119 ,  H04N19/139 ,  H04N19/147 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/197 ,  H04N19/30 ,  H04N19/44 ,  H04N19/513 ,  H04N19/52 ,  H04N19/59 ,  H04N19/593 ,  H04N19/61 ,  H04N19/80 ,  H04N19/82 ,  H04N19/86 ,  H04N19/96

摘要： A method of encoding a video is provided, the method includes: determining a filtering boundary on which deblocking filtering is to be performed based on at least one data unit from among a plurality of coding units that are hierarchically configured according to depths indicating a number of times at least one maximum coding unit is spatially spilt, and a plurality of prediction units and a plurality of transformation units respectively for prediction and transformation of the plurality of coding units, determining filtering strength at the filtering boundary based on a prediction mode of a coding unit to which pixels adjacent to the filtering belong from among the plurality of coding units, and transformation coefficient values of the pixels adjacent to the filtering boundary, and performing deblocking filtering on the filtering boundary based on the determined filtering strength.

公开(公告)号：US09565447B2

公开(公告)日：2017-02-07

申请号：US13009105

申请日：2011-01-19

申请人： Tammy Lee ,  Woo-jin Han

发明人： Tammy Lee ,  Woo-jin Han

IPC分类号： H04N19/56 ,  H04N19/52 ,  H04N19/61 ,  H04N19/46 ,  H04N19/503 ,  H04N19/51 ,  H04N19/172 ,  H04N19/176 ,  H04N19/513

CPC分类号： H04N19/56 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/46 ,  H04N19/503 ,  H04N19/51 ,  H04N19/513 ,  H04N19/52 ,  H04N19/61

摘要： A method and apparatus for encoding and decoding a motion vector of a current block. The method of encoding including: generating information about the motion vector based on a motion vector of a current block and a motion vector predictor of the current block by estimating the motion vector and determining a first motion vector predictor candidate from among a plurality of motion vector predictor candidates as the motion vector predictor based on a result of the estimating; and generating a virtual motion vector by using a second motion vector predictor candidate and the information about the motion vector, generating vector differences between the virtual motion vector and the plurality of motion vector predictor candidates, comparing the vector differences with the information about the motion vector, and selectively excluding the second motion vector predictor candidate according to the comparing.

摘要翻译： 一种用于对当前块的运动矢量进行编码和解码的方法和装置。 编码方法包括：基于当前块的运动矢量和当前块的运动矢量预测器，通过估计运动矢量并从多个运动矢量中确定第一运动矢量预测器候选来生成关于运动矢量的信息 基于估计结果的预测候选作为运动矢量预测器; 以及通过使用第二运动矢量预测器候选和关于运动矢量的信息来生成虚拟运动矢量，生成虚拟运动矢量和多个运动矢量预测器候选之间的矢量差，将矢量差与关于运动矢量的信息进行比较 ，并且根据该比较选择性地排除第二运动矢量预测器候选。