专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US08116578B2 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：US08116578B2
公开(公告)日：2012-02-14
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： G06K9/46
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。

2. 发明授权

US07889793B2 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：US07889793B2
公开(公告)日：2011-02-15
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： H04N7/12 , H04N11/02 , 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。

3. 发明申请

US20060083300A1 Video coding and decoding methods using interlayer filtering and video encoder and decoder using the same 审中-公开
标题翻译：视频编码和解码方法采用层间滤波和视频编码器和解码器相同
公开(公告)号：US20060083300A1
公开(公告)日：2006-04-20
申请号：US11251917
申请日：2005-10-18
申请人： Woo-jin Han , Bae-keun Lee , Jae-young Lee , Sang-chang Cha , Ho-jin Ha , Kyo-hyuk Lee
发明人： Woo-jin Han , Bae-keun Lee , Jae-young Lee , Sang-chang Cha , Ho-jin Ha , Kyo-hyuk Lee
IPC分类号： H04N11/04 , H04N7/12 , H04B1/66 , H04N11/02
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： Video coding and decoding methods using interlayer filtering and a video encoder and decoder using the same are provided. Multi-layer video coding employing a plurality of video coding algorithms can improve video coding efficiency by using interlayer filtering. The video coding method includes encoding video frames using a first video coding scheme, performing interlayer filtering on the frames encoded by the first video coding scheme, encoding the video frames using a second video coding scheme by referring to the frames subjected to the interlayer filtering, and generating a bitstream containing the frames encoded by the first and second video coding schemes.
摘要翻译：提供了使用层间滤波的视频编码和解码方法以及使用其的视频编码器和解码器。使用多个视频编码算法的多层视频编码可以通过使用层间滤波来提高视频编码效率。视频编码方法包括使用第一视频编码方案对视频帧进行编码，对由第一视频编码方案编码的帧执行层间滤波，通过参照经过层间滤波的帧对第二视频编码方式进行编码，以及生成包含由第一和第二视频编码方案编码的帧的比特流。

4. 发明申请

US20050047509A1 Scalable video coding and decoding methods, and scalable video encoder and decoder 审中-公开
标题翻译：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。

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. 发明申请

US20070025448A1 Deblocking filtering method considering intra-BL mode and multilayer video encoder/decoder using the same 审中-公开
标题翻译：考虑BL内模式的解块滤波方法及使用其的多层视频编解码器
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。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式