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1. 发明申请

US20050013371A1 Interframe wavelet video coding method 有权
标题翻译：帧间小波视频编码方法
公开(公告)号：US20050013371A1
公开(公告)日：2005-01-20
申请号：US10892447
申请日：2004-07-16
申请人： Chang-hoon Yim , Ho-jin Ha , Bac-keun Lee , Woo-jin Han
发明人： Chang-hoon Yim , Ho-jin Ha , Bac-keun Lee , Woo-jin Han
IPC分类号： H04N7/26 , H04N7/12
CPC分类号： H04N19/53 , H04N19/13 , H04N19/61 , H04N19/615 , H04N19/63
摘要： An interframe wavelet video coding (IWVC) method by which an average temporal distance (ATD) is minimized is provided. The IWVC method comprises receiving a group-of-frames and decomposing the group-of-frames into difference frames and first average frames between the frames in a first forward temporal direction and a backward temporal direction, wavelet-decomposing the first difference frames and the first average frames, and quantizing coefficients resulting from the wavelet-decomposition to generate a bitstream. The IWVC method provides improved video coding performance.
摘要翻译：提供了将平均时间距离（ATD）最小化的帧间小波视频编码（IWVC）方法。 IWVC方法包括：接收一组帧，并将该组帧分解为第一前向和后向方向上的帧之间的差分帧和第一平均帧，小波分解第一差分帧和第一平均帧和由小波分解产生的量化系数以产生比特流。 IWVC方法提供了改进的视频编码性能。

2. 发明授权

US07292635B2 Interframe wavelet video coding method 有权
标题翻译：帧间小波视频编码方法
公开(公告)号：US07292635B2
公开(公告)日：2007-11-06
申请号：US10892447
申请日：2004-07-16
申请人： Chang-hoon Yim , Ho-jin Ha , Bac-keun Lee , Woo-jin Han
发明人： Chang-hoon Yim , Ho-jin Ha , Bac-keun Lee , Woo-jin Han
IPC分类号： H04B1/66
CPC分类号： H04N19/53 , H04N19/13 , H04N19/61 , H04N19/615 , H04N19/63
摘要： An interframe wavelet video coding (IWVC) method by which an average temporal distance (ATD) is minimized is provided. The IWVC method comprises receiving a group-of-frames and decomposing the group-of-frames into difference frames and first average frames between the frames in a first forward temporal direction and a backward temporal direction, wavelet-decomposing the first difference frames and the first average frames, and quantizing coefficients resulting from the wavelet-decomposition to generate a bitstream. The IWVC method provides improved video coding performance.
摘要翻译：提供了将平均时间距离（ATD）最小化的帧间小波视频编码（IWVC）方法。 IWVC方法包括：接收一组帧，并将该组帧分解为第一前向和后向方向上的帧之间的差分帧和第一平均帧，小波分解第一差分帧和第一平均帧和由小波分解产生的量化系数以产生比特流。 IWVC方法提供了改进的视频编码性能。

3. 发明申请

US20050047508A1 Adaptive interframe wavelet video coding method, computer readable recording medium and system therefor 审中-公开
标题翻译：自适应帧间小波视频编码方法，计算机可读记录介质及其系统
公开(公告)号：US20050047508A1
公开(公告)日：2005-03-03
申请号：US10924825
申请日：2004-08-25
申请人： Ho-jin Ha , Chang-hoon Yim , Bae-keun Lee , Woo-jin Han
发明人： Ho-jin Ha , Chang-hoon Yim , Bae-keun Lee , Woo-jin Han
IPC分类号： H04N7/12 , H04N7/26 , H04N7/32
CPC分类号： H04N19/615 , H04N19/103 , H04N19/122 , H04N19/13 , H04N19/139 , H04N19/61 , H04N19/63 , H04N19/635
摘要： An adaptive interframe wavelet video coding method, a computer readable recording medium and system therefor are provided. The interframe wavelet video coding method includes (a) receiving a group-of-frames including a plurality of frames and determining a mode flag according to a predetermined procedure using motion vectors of boundary pixels, (b) temporally decomposing the frames included in the group-of-frames in predetermined directions in accordance with the determined mode flag, and (c) performing spatial transform and quantization on the frames obtained by performing step (b), thereby generating a bitstream. Since an appropriate temporal filtering is performed in accordance with a boundary condition, efficiency of interframe wavelet video coding is increased.
摘要翻译：提供一种自适应帧间小波视频编码方法，一种计算机可读记录介质及其系统。帧间小波视频编码方法包括：（a）接收包括多个帧的帧组，并使用边界像素的运动矢量根据预定的过程确定模式标志，（b）临时分解包括在组中的帧（c）对通过执行步骤（b）获得的帧执行空间变换和量化，从而生成比特流。由于根据边界条件执行适当的时间滤波，因此增加了帧间小波视频编码的效率。

4. 发明申请

US20050047503A1 Scalable video coding method and apparatus using pre-decoder 审中-公开
标题翻译：使用预解码器的可缩放视频编码方法和装置
公开(公告)号：US20050047503A1
公开(公告)日：2005-03-03
申请号：US10925030
申请日：2004-08-25
申请人： Woo-jin Han , Chang-hoon Yim , Ho-jin Ha , Bae-keun Lee
发明人： Woo-jin Han , Chang-hoon Yim , Ho-jin Ha , Bae-keun Lee
IPC分类号： H04N7/12 , H04N7/24
CPC分类号： H04N19/115 , H04N19/10 , H04N19/132 , H04N19/14 , H04N19/147 , H04N19/15 , H04N19/152 , H04N19/177 , H04N19/19 , H04N19/44 , H04N19/61 , H04N19/619 , H04N19/63 , H04N19/86
摘要： A method and an apparatus for controlling bitrates in an optimal manner by use of information available for use by the pre-decoder, in wavelet-based scalable video coding art using the pre-decoder. A method for controlling bitrates includes the steps of determining the amount of bits for each coding unit relative to a bitstream generated by encoding an original image so as to minimize distortion of the final image from the original image, and extracting a bitstream having the target amount of bits by truncating a part of the generated bitstream based on the determined amount of bits.
摘要翻译：一种使用预解码器的基于小波的可分级视频编码技术中通过使用可由预解码器使用的信息以最佳方式控制比特率的方法和装置。用于控制比特率的方法包括以下步骤：相对于通过对原始图像进行编码而生成的比特流来确定每个编码单元的比特量，以使来自原始图像的最终图像的失真最小化，并且提取具有目标量的比特流通过基于所确定的比特量来截断生成的比特流的一部分。

5. 发明授权

US08542750B2 Deblocking control method considering intra BL mode and multilayer video encoder/decoder using the same 有权
标题翻译：考虑内部BL模式的解块控制方法和使用相同的多层视频编码器/解码器
公开(公告)号：US08542750B2
公开(公告)日：2013-09-24
申请号：US11322392
申请日：2006-01-03
申请人： Sang-chang Cha , Ho-jin Ha , Kyo-hyuk Lee , Bae-keun Lee , Jae-young Lee , Woo-jin Han
发明人： Sang-chang Cha , Ho-jin Ha , Kyo-hyuk Lee , Bae-keun Lee , Jae-young Lee , Woo-jin Han
IPC分类号： H04B1/66 , H04N7/12 , H04N11/04 , H04N11/02
CPC分类号： H04N19/61
摘要： A deblocking filter used in a video encoder/decoder based on a multilayer is disclosed. The deblocking filtering method includes choosing a present block and its neighboring block on which a deblocking filtering will be performed, judging whether the present block and the neighboring block have been coded by the intra BL mode, choosing a deblocking filter strength according to the result of the judgment, and performing the deblocking filtering with respect to a boundary between the present block and the neighboring block and according to the deblocking filter strength.
摘要翻译：公开了一种用于基于多层的视频编码器/解码器中的去块滤波器。解块滤波方法包括：选择当前块及其相邻块，在其上执行去块滤波，判断当前块和相邻块是否已经通过帧内BL模式进行编码，根据其结果选择解块滤波器强度并且根据解块滤波器强度对当前块和相邻块之间的边界执行解块滤波。

6. 发明授权

US07881387B2 Apparatus and method for adjusting bitrate of coded scalable bitsteam based on multi-layer 有权
标题翻译：基于多层次调整可编程可扩展比特率的比特率的装置和方法
公开(公告)号：US07881387B2
公开(公告)日：2011-02-01
申请号：US11251976
申请日：2005-10-18
申请人： Woo-jin Han , Kyo-hyuk Lee , Sang-chang Cha , Ho-jin Ha , Bae-keun Lee , Jae-young Lee
发明人： Woo-jin Han , Kyo-hyuk Lee , Sang-chang Cha , Ho-jin Ha , Bae-keun Lee , Jae-young Lee
IPC分类号： H04N7/12 , H04N11/02 , H04N11/04
CPC分类号： H04N19/615 , H04N19/115 , H04N19/117 , H04N19/127 , H04N19/13 , H04N19/132 , H04N19/136 , H04N19/149 , H04N19/15 , H04N19/152 , H04N19/154 , H04N19/162 , H04N19/164 , H04N19/172 , H04N19/177 , H04N19/187 , H04N19/31 , H04N19/34 , H04N19/36 , H04N19/46 , H04N19/517 , H04N19/577 , H04N19/587 , H04N19/59 , H04N19/61 , H04N19/63 , H04N19/70 , H04N19/86
摘要： Disclosed are a method and an apparatus for realizing signal to noise ratio (SNR) scalability in a video stream server in order to transmit a video stream in a variable network environment. An apparatus for adapting a bitrate of a coded scalable bit-stream based on multi-layers to a variable network environment, comprising a bit-stream parsing unit to parse an input bit-stream, a pre-decoding condition determining unit to determine a target transmission bitrate according to the variable network environment, a pre-decoding unit to skip at least one frame among the frames included in the parsed bit-stream according to the determined target transmission bitrate, and a bit-stream transmission unit to transmit to a client device the bit-stream that has been restructured due to frame skipping.
摘要翻译：公开了一种用于在视频流服务器中实现信噪比（SNR）可扩展性的方法和装置，以便在可变网络环境中发送视频流。一种用于将基于多层的编码可缩放比特流的比特率适配到可变网络环境的装置，包括用于解析输入比特流的比特流分析单元，预解码条件确定单元，以确定目标根据所述可变网络环境的传输比特率，根据所确定的目标传输比特率，预解码单元跳过包含在解析的比特流中的帧中的至少一个帧;以及比特流发送单元，用于向客户端发送设备由于跳帧而重组的位流。

7. 发明申请

US20060088101A1 Method and apparatus for effectively compressing motion vectors in video coder based on multi-layer 有权
标题翻译：基于多层视频编码器有效压缩运动矢量的方法和装置
公开(公告)号：US20060088101A1
公开(公告)日：2006-04-27
申请号：US11254051
申请日：2005-10-20
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： H04N11/02 , H04N7/12 , H04B1/66 , H04N11/04
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。

8. 发明申请

US20050226335A1 Method and apparatus for supporting motion scalability 审中-公开
标题翻译：支持运动可伸缩性的方法和装置
公开(公告)号：US20050226335A1
公开(公告)日：2005-10-13
申请号：US11104640
申请日：2005-04-13
申请人： Bae-keun Lee , Sang-chang Cha , Ho-jin Ha , Woo-jin Han
发明人： Bae-keun Lee , Sang-chang Cha , Ho-jin Ha , Woo-jin Han
IPC分类号： H04N19/50 , H04N19/105 , H04N19/119 , H04N19/146 , H04N19/147 , H04N19/176 , H04N19/19 , H04N19/196 , H04N19/30 , H04N19/31 , H04N19/51 , H04N19/513 , H04N19/523 , H04N19/53 , H04N19/59 , H04N19/60 , H04N19/625 , H04N19/63 , H04N19/80 , H04N19/91 , H04N7/12
CPC分类号： H04N19/615 , H04N19/13 , H04N19/147 , H04N19/46 , H04N19/52 , H04N19/53 , H04N19/56 , H04N19/567 , H04N19/61 , H04N19/63
摘要： A method and apparatus for supporting scalability for motion vectors in scalable video coding are provided. The motion estimation apparatus includes a motion estimation module searching for a variable block size and a motion vector that minimize a cost function for each layer according to predetermined pixel accuracy, a sampling module upsampling an original frame when the pixel accuracy is less than a pixel size, and before searching for a motion vector in a layer having a lower resolution than the original frame downsampling the original frame into the low resolution, a motion residual module calculating a residual between motion vectors found in the respective layers, and a rearrangement module rearranging the residuals between the found motion vectors and the found variable block size information using significance obtained from a searched lower layer. Accordingly, true motion scalability can be achieved to improve adaptability to changing network circumstances.
摘要翻译：提供了一种用于支持可伸缩视频编码中的运动矢量的可扩展性的方法和装置。运动估计装置包括：运动估计模块，用于根据预定的像素精度搜索可变块大小和每个层的成本函数最小化的运动矢量;当像素精度小于像素尺寸时，采样模块对原始帧进行上采样并且在将具有比原始帧低的原始帧的分辨率低的层的运动矢量搜索到低分辨率之前，运动残差模块计算在各个层中找到的运动矢量之间的残差，以及重新排列模块找到的运动矢量之间的残差和使用从搜索到的下层获得的显着性的找到的可变块大小信息。因此，可以实现真实的运动可伸缩性，以提高对网络环境变化的适应性。

9. 发明申请

US20050084015A1 Bit-rate control method and apparatus for normalizing visual quality 审中-公开
标题翻译：用于使视觉质量正常化的比特率控制方法和装置
公开(公告)号：US20050084015A1
公开(公告)日：2005-04-21
申请号：US10968491
申请日：2004-10-20
申请人： Woo-jin Han , Bae-keun Lee , Ho-jin Ha
发明人： Woo-jin Han , Bae-keun Lee , Ho-jin Ha
IPC分类号： H04N19/94 , H04N7/12 , H04N7/173 , H04N7/24
CPC分类号： H04N7/17318 , H04N19/115 , H04N19/149 , H04N21/234327 , H04N21/6377 , H04N21/658
摘要： A scalable video codec includes an encoder that encodes an original moving picture; a rate control unit that allocates an optimal amount of bits for each coding unit based on a bit-rate desired by a user; a pre-decoder that receives a bit-stream and extracts a bit-stream having an appropriate amount of bits; and a decoder that decodes image sequences of the moving picture from the extracted bit-stream, so as to reconstruct the original moving picture. In particular, the present invention focuses on the operation performed in the rate control unit 340. The rate control unit operates a definition step of a bit-rate function available for use in the predecoder, a pre-summation step to thereby obtain the uniform visual quality, an approximation to determine the distortion function, and a normalization step to allow the total allocated bit-rates to be equal to a target bit-rate.
摘要翻译：可分级视频编解码器包括对原始运动图像进行编码的编码器; 速率控制单元，其基于用户期望的比特率为每个编码单元分配最佳的比特量; 接收比特流并提取具有适当位数的比特流的预解码器; 以及解码器，其从提取的比特流解码运动图像的图像序列，以便重构原始运动图像。特别地，本发明着重于在速率控制单元340中执行的操作。速率控制单元操作可用于预解码器的比特率函数的定义步骤，预先求和步骤，从而获得均匀的视觉质量，确定失真函数的近似值，以及允许总数的归一化步骤分配的比特率等于目标比特率。

10. 发明授权

US08559520B2 Method and apparatus for effectively compressing motion vectors in multi-layer structure 失效
标题翻译：多层结构中有效压缩运动矢量的方法和装置
公开(公告)号：US08559520B2
公开(公告)日：2013-10-15
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： H04N7/12
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。

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