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1.发明授权公开(公告)号：US07020201B2
公开(公告)日：2006-03-28
申请号：US10301415
申请日：2002-11-20
申请人： Jeng-Hung Luo , Gen-Ming Lee , Chung-Neng Wang , Tihao Chiang
发明人： Jeng-Hung Luo , Gen-Ming Lee , Chung-Neng Wang , Tihao Chiang
摘要： A method of motion estimation for video encoding constructs a binary pyramid structure having three binary layers. A state update module registers and updates repeat occurrence of final motion vectors and a static-state checking module determines if the method is in a static mode or a normal mode based on the repeat occurrence. In a normal mode, the first binary layer is searched within a ±3 pixel refinement window to determine a first level motion vector. In the second binary layer, a search range is computed based on six motion vector candidates. By checking every point within in the search range, a second binary layer search generates a second level motion vector. Finally, a third binary layer search within a ±2 pixel refinement window generates a final motion vector according to the second level motion vector. In a static mode, a fine tuning module performs search within a ±1 pixel refinement window and generates a final motion vector.
摘要翻译： 视频编码的运动估计方法构成具有三个二进制层的二进制金字塔结构。 状态更新模块注册和更新最终运动矢量的重复发生，并且静态状态检查模块基于重复发生来确定该方法是处于静态模式还是正常模式。 在正常模式中，在±3像素细化窗口内搜索第一二进制层以确定第一级运动矢量。 在第二二进制层中，基于六个运动矢量候选来计算搜索范围。 通过检查搜索范围内的每个点，第二二进制层搜索生成第二级运动矢量。 最后，±2像素细化窗口内的第三二进制层搜索根据第二级运动矢量生成最终运动矢量。 在静态模式中，微调模块在±1像素细化窗口内进行搜索，并生成最终的运动矢量。
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公开(公告)号：US20050220192A1
公开(公告)日：2005-10-06
申请号：US11136780
申请日：2005-05-25
摘要： A robust fine granularity scalability video encoding includes a base layer encoder and an enhancement layer encoder in which motion compensated difference images are generated by comparing an original image to predicted images at base layer and enhancement layer with motion compensation. Based on leaky and partial predictions, a high quality reference image is constructed at the enhancement layer to improve temporal prediction. In the construction of the high quality reference image, one parameter β controls the number of bitplanes of the enhancement layer difference coefficients used and another parameter α controls the amount of predictive leak. A spatial scalability module allows the processed pictures at the base layer and the enhancement layer to have identical or different spatial resolutions.
摘要翻译： 强大的细粒度可伸缩性视频编码包括基本层编码器和增强层编码器，其中通过将原始图像与基本层和具有运动补偿的增强层的预测图像进行比较来生成运动补偿差分图像。 基于泄漏和部分预测，在增强层构建高质量参考图像以改善时间预测。 在构建高质量参考图像时，一个参数β控制所使用的增强层差分系数的位平面数，另一参数α控制预测泄漏量。 空间可扩展性模块允许基础层和增强层处理的图像具有相同或不同的空间分辨率。
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公开(公告)号：US08170124B2
公开(公告)日：2012-05-01
申请号：US12326105
申请日：2008-12-02
申请人： Ming-Yen Huang , Tzu-Liang Su , Shih-Hao Wang , Chung-Neng Wang , Tihao Chiang
发明人： Ming-Yen Huang , Tzu-Liang Su , Shih-Hao Wang , Chung-Neng Wang , Tihao Chiang
IPC分类号： H04N7/12
CPC分类号： H04N19/895 , H04N19/11 , H04N19/147 , H04N19/166
摘要： An MPEG-4 system with error concealment is provided for video service under the network with packet loss. The MPEG-4 system includes an encoder and a decoder. The encoder uses an intra-refreshment technique is used to make coded bitstream more robust against noise in order to stop error propagation. The rate-distortion optimization criterion is also introduced to adaptively update in synchronization with intra-coded blocks adaptively based on the true network condition with minimal overhead. The Lagrange multiplier is modified to achieve the best rate-distortion balance. In addition, a decoder loop is used in the encoder and is synchronized with the true decoder to achieve the best performance and avoid mismatch with the decoder used in the MPEG-4 system. The decoder is able to achieve resilient decoding from any kind of noise and enhance the reconstructed image quality with spatial and temporal hybrid concealment method. The result shows that a 3.65-9.71 dB further improvement on peak-signal-to-noise-ratio (PSNR) can be achieved in comparison with the existing methods that adopt spatial copy and zero motion concealment in decoding.
摘要翻译： 为具有丢包的网络下的视频服务提供了具有错误隐藏的MPEG-4系统。 MPEG-4系统包括编码器和解码器。 编码器使用内部刷新技术来使编码比特流更加鲁棒地抵抗噪声，以便阻止错误传播。 还引入了速率失真优化标准，以最小的开销，基于真实的网络条件自适应地自适应地更新与帧内编码块的内部编码块。 修改拉格朗日乘数以获得最佳的速率 - 失真平衡。 另外，在编码器中使用解码器环路，并且与真实解码器同步以实现最佳性能并避免与MPEG-4系统中使用的解码器不匹配。 解码器能够通过任何种类的噪声实现弹性解码，并通过空间和时间混合隐藏方法增强重建的图像质量。 结果表明，与采用空间复制和零运动隐藏解码的现有方法相比，可以实现峰值信噪比（PSNR）的3.65-9.71dB进一步改善。
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公开(公告)号：US07391807B2
公开(公告)日：2008-06-24
申请号：US10128758
申请日：2002-04-24
申请人： Yao-Chung Lin , Chung-Neng Wang , Tihao Chiang , Anthony Vetro , Huifang Sun
发明人： Yao-Chung Lin , Chung-Neng Wang , Tihao Chiang , Anthony Vetro , Huifang Sun
IPC分类号： H04N7/18
CPC分类号： H04N19/34 , H04N19/124 , H04N19/152 , H04N19/154 , H04N19/187 , H04N19/40 , H04N19/61
摘要： A method transcodes a compressed multi-layer video bitstream that includes a base layer bitstream and an enhancement layer bitstream. The base and enhancement layers are first partially decoded, and then the partially decoded signals are combined with a motion compensated signal yielding a combined signal. The combined signal is quantized into an output signal according to a quantization parameter, and the output signal is variable length encoded as a single layer bitstream. In a preprocessing step, the enhancement layer can be truncated according to rate control constraint, and the same constraints can also be used during the quantization.
摘要翻译： 一种对包括基本层比特流和增强层比特流的压缩多层视频比特流进行转码的方法。 首先对基础和增强层进行部分解码，然后将部分解码的信号与产生组合信号的运动补偿信号组合。 组合信号根据量化参数被量化为输出信号，并且输出信号是可变长度编码为单层比特流。 在预处理步骤中，可以根据速率控制约束来截断增强层，并且在量化期间也可以使用相同的约束。
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公开(公告)号：US07072394B2
公开(公告)日：2006-07-04
申请号：US10229580
申请日：2002-08-27
IPC分类号： H04B1/66
摘要： A robust fine granularity scalability video encoding includes a base layer encoder and an enhancement layer encoder in which motion compensated difference images are generated by comparing an original image to predicted images at base layer and enhancement layer with motion compensation. Based on leaky and partial predictions, a high quality reference image is constructed at the enhancement layer to improve temporal prediction. In the construction of the high quality reference image, one parameter β controls the number of bitplanes of the enhancement layer difference coefficients used and another parameter α controls the amount of predictive leak. A spatial scalability module allows the processed pictures at the base layer and the enhancement layer to have identical or different spatial resolutions.
摘要翻译： 强大的细粒度可伸缩性视频编码包括基本层编码器和增强层编码器，其中通过将原始图像与基本层和具有运动补偿的增强层的预测图像进行比较来生成运动补偿差分图像。 基于泄漏和部分预测，在增强层构建高质量参考图像以改善时间预测。 在构建高质量参考图像时，一个参数β控制所使用的增强层差分系数的位平面数，另一参数α控制预测泄漏量。 空间可扩展性模块允许基础层和增强层处理的图像具有相同或不同的空间分辨率。
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公开(公告)号：US07203235B2
公开(公告)日：2007-04-10
申请号：US11136780
申请日：2005-05-25
IPC分类号： H04B1/66
摘要： A robust fine granularity scalability video encoding includes a base layer encoder and an enhancement layer encoder in which motion compensated difference images are generated by comparing an original image to predicted images at base layer and enhancement layer with motion compensation. Based on leaky and partial predictions, a high quality reference image is constructed at the enhancement layer to improve temporal prediction. In the construction of the high quality reference image, one parameter β controls the number of bitplanes of the enhancement layer difference coefficients used and another parameter α controls the amount of predictive leak. A spatial scalability module allows the processed pictures at the base layer and the enhancement layer to have identical or different spatial resolutions.
摘要翻译： 强大的细粒度可伸缩性视频编码包括基本层编码器和增强层编码器，其中通过将原始图像与基本层和具有运动补偿的增强层的预测图像进行比较来生成运动补偿差分图像。 基于泄漏和部分预测，在增强层构建高质量参考图像以改善时间预测。 在构建高质量参考图像时，一个参数β控制所使用的增强层差分系数的位平面数，另一参数α控制预测泄漏量。 空间可扩展性模块允许基础层和增强层处理的图像具有相同或不同的空间分辨率。
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公开(公告)号：US20060104366A1
公开(公告)日：2006-05-18
申请号：US10990818
申请日：2004-11-16
申请人： Ming-Yen Huang , Tzu-Liang Su , Shih-Hao Wang , Chung-Neng Wang , Tihao Chiang
发明人： Ming-Yen Huang , Tzu-Liang Su , Shih-Hao Wang , Chung-Neng Wang , Tihao Chiang
CPC分类号： H04N19/895 , H04N19/11 , H04N19/147 , H04N19/166
摘要： An MPEG-4 system with error concealment is provided for video service under the network with packet loss. The MPEG-4 system includes an encoder and a decoder. The encoder uses an intra-refreshment technique is used to make coded bitstream more robust against noise in order to stop error propagation. The rate-distortion optimization criterion is also introduced to adaptively update in synchronization with intra-coded blocks adaptively based on the true network condition with minimal overhead. The Lagrange multiplier is modified to achieve the best rate-distortion balance. In addition, a decoder loop is used in the encoder and is synchronized with the true decoder to achieve the best performance and avoid mismatch with the decoder used in the MPEG-4 system. The decoder is able to achieve resilient decoding from any kind of noise and enhance the reconstructed image quality with spatial and temporal hybrid concealment method. The result shows that a 3.65-9.71 dB further improvement on peak-signal-to-noise-ratio (PSNR) can be achieved in comparison with the existing methods that adopt spatial copy and zero motion concealment in decoding.
摘要翻译： 为具有丢包的网络下的视频服务提供了具有错误隐藏的MPEG-4系统。 MPEG-4系统包括编码器和解码器。 编码器使用内部刷新技术来使编码比特流更加鲁棒地抵抗噪声，以便停止错误传播。 还引入了速率失真优化标准，以最小的开销，基于真实的网络条件自适应地自适应地更新与帧内编码块的内部编码块。 修改拉格朗日乘数以获得最佳的速率 - 失真平衡。 另外，在编码器中使用解码器环路，并且与真实解码器同步以实现最佳性能并避免与MPEG-4系统中使用的解码器不匹配。 解码器能够通过任何种类的噪声实现弹性解码，并通过空间和时间混合隐藏方法增强重建的图像质量。 结果表明，与采用空间复制和零运动隐藏解码的现有方法相比，可以实现峰值信噪比（PSNR）的3.65-9.71dB进一步改善。
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公开(公告)号：US07738561B2
公开(公告)日：2010-06-15
申请号：US10990818
申请日：2004-11-16
申请人： Ming-Yen Huang , Tzu-Liang Su , Shih-Hao Wang , Chung-Neng Wang , Tihao Chiang
发明人： Ming-Yen Huang , Tzu-Liang Su , Shih-Hao Wang , Chung-Neng Wang , Tihao Chiang
IPC分类号： H04N7/12
CPC分类号： H04N19/895 , H04N19/11 , H04N19/147 , H04N19/166
摘要： An MPEG-4 system with error concealment is provided for video service under the network with packet loss. The MPEG-4 system includes an encoder and a decoder. The encoder uses an intra-refreshment technique is used to make coded bitstream more robust against noise in order to stop error propagation. The rate-distortion optimization criterion is also introduced to adaptively update in synchronization with intra-coded blocks adaptively based on the true network condition with minimal overhead. The Lagrange multiplier is modified to achieve the best rate-distortion balance. In addition, a decoder loop is used in the encoder and is synchronized with the true decoder to achieve the best performance and avoid mismatch with the decoder used in the MPEG-4 system. The decoder is able to achieve resilient decoding from any kind of noise and enhance the reconstructed image quality with spatial and temporal hybrid concealment method. The result shows that a 3.65-9.71 dB further improvement on peak-signal-to-noise-ratio (PSNR) can be achieved in comparison with the existing methods that adopt spatial copy and zero motion concealment in decoding.
摘要翻译： 为具有丢包的网络下的视频服务提供了具有错误隐藏的MPEG-4系统。 MPEG-4系统包括编码器和解码器。 编码器使用内部刷新技术来使编码比特流更加鲁棒地抵抗噪声，以便阻止错误传播。 还引入了速率失真优化标准，以最小的开销，基于真实的网络条件自适应地自适应地更新与帧内编码块的内部编码块。 修改拉格朗日乘数以获得最佳的速率 - 失真平衡。 另外，在编码器中使用解码器环路，并且与真实解码器同步以实现最佳性能并避免与MPEG-4系统中使用的解码器不匹配。 解码器能够通过任何种类的噪声实现弹性解码，并通过空间和时间混合隐藏方法增强重建的图像质量。 结果表明，与采用空间复制和零运动隐藏解码的现有方法相比，可以实现峰值信噪比（PSNR）的3.65-9.71dB进一步改善。
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公开(公告)号：US20090086828A1
公开(公告)日：2009-04-02
申请号：US12326105
申请日：2008-12-02
申请人： Ming-Yen Huang , Tzu-Liang Su , Shih-Hao Wang , Chung-Neng Wang , Tihao Chiang
发明人： Ming-Yen Huang , Tzu-Liang Su , Shih-Hao Wang , Chung-Neng Wang , Tihao Chiang
IPC分类号： H04N7/26
CPC分类号： H04N19/895 , H04N19/11 , H04N19/147 , H04N19/166
摘要： An MPEG-4 system with error concealment is provided for video service under the network with packet loss. The MPEG-4 system includes an encoder and a decoder. The encoder uses an intra-refreshment technique is used to make coded bitstream more robust against noise in order to stop error propagation. The rate-distortion optimization criterion is also introduced to adaptively update in synchronization with intra-coded blocks adaptively based on the true network condition with minimal overhead. The Lagrange multiplier is modified to achieve the best rate-distortion balance. In addition, a decoder loop is used in the encoder and is synchronized with the true decoder to achieve the best performance and avoid mismatch with the decoder used in the MPEG-4 system. The decoder is able to achieve resilient decoding from any kind of noise and enhance the reconstructed image quality with spatial and temporal hybrid concealment method. The result shows that a 3.65-9.71 dB further improvement on peak-signal-to-noise-ratio (PSNR) can be achieved in comparison with the existing methods that adopt spatial copy and zero motion concealment in decoding.
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公开(公告)号：US20090086819A1
公开(公告)日：2009-04-02
申请号：US12326104
申请日：2008-12-02
申请人： Ming-Yen Huang , Tzu-Liang Su , Shih-Hao Wang , Chung-Neng Wang , Tihao Chiang
发明人： Ming-Yen Huang , Tzu-Liang Su , Shih-Hao Wang , Chung-Neng Wang , Tihao Chiang
IPC分类号： H04N7/32
CPC分类号： H04N19/895 , H04N19/11 , H04N19/147 , H04N19/166
摘要： An MPEG-4 system with error concealment is provided for video service under the network with packet loss. The MPEG-4 system includes an encoder and a decoder. The encoder uses an intra-refreshment technique is used to make coded bitstream more robust against noise in order to stop error propagation. The rate-distortion optimization criterion is also introduced to adaptively update in synchronization with intra-coded blocks adaptively based on the true network condition with minimal overhead. The Lagrange multiplier is modified to achieve the best rate-distortion balance. In addition, a decoder loop is used in the encoder and is synchronized with the true decoder to achieve the best performance and avoid mismatch with the decoder used in the MPEG-4 system. The decoder is able to achieve resilient decoding from any kind of noise and enhance the reconstructed image quality with spatial and temporal hybrid concealment method. The result shows that a 3.65-9.71 dB further improvement on peak-signal-to-noise-ratio (PSNR) can be achieved in comparison with the existing methods that adopt spatial copy and zero motion concealment in decoding.
摘要翻译： 为具有丢包的网络下的视频服务提供了具有错误隐藏的MPEG-4系统。 MPEG-4系统包括编码器和解码器。 编码器使用内部刷新技术来使编码比特流更加鲁棒地抵抗噪声，以便阻止错误传播。 还引入了速率失真优化标准，以最小的开销，基于真实的网络条件自适应地自适应地更新与帧内编码块的内部编码块。 修改拉格朗日乘数以获得最佳的速率 - 失真平衡。 另外，在编码器中使用解码器环路，并且与真实解码器同步以实现最佳性能并避免与MPEG-4系统中使用的解码器不匹配。 解码器能够通过任何种类的噪声实现弹性解码，并通过空间和时间混合隐藏方法增强重建的图像质量。 结果表明，与采用空间复制和零运动隐藏解码的现有方法相比，可以实现峰值信噪比（PSNR）的3.65-9.71dB进一步改善。
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