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1. 发明申请

WO2006108654A2 METHOD AND APPARATUS FOR ENHANCED VIDEO CODING 审中-公开
标题翻译：用于增强视频编码的方法和装置
公开(公告)号：WO2006108654A2
公开(公告)日：2006-10-19
申请号：PCT/EP2006003410
申请日：2006-04-13
申请人： UNIV HANNOVER , VATIS YURI , EDLER BERND , WASSERMANN INGOLF , NGUYEN DIEU THANH , OSTERMANN JOERN
发明人： VATIS YURI , EDLER BERND , WASSERMANN INGOLF , NGUYEN DIEU THANH , OSTERMANN JOERN
IPC分类号： H04N7/26
CPC分类号： H04N19/59 , H04N19/117 , H04N19/136 , H04N19/174 , H04N19/176 , H04N19/182 , H04N19/187 , H04N19/196 , H04N19/31 , H04N19/33 , H04N19/46 , H04N19/463 , H04N19/51 , H04N19/523 , H04N19/593 , H04N19/61
摘要： Standard video compression techniques apply motion-compensated prediction combined with transform coding of the prediction error. In the context of prediction with fractional-pel motion vector resolution it was shown, that aliasing components contained in an image signal are limiting the prediction efficiency obtained by motion compensation. In order to consider aliasing, quantization and motion estimation errors, camera noise, etc., we analytically developed a twodimensional (2D) non-separable interpolation filter, which is independently calculated for each frame by minimizing the prediction error energy. For every fractional-pel position to be interpolated, an individual set of 2D filter coefficients is determined. Since transmitting filter coefficients as side information results in an additional bit rate, which is almost constant for different image resolutions and total bit rates, the loss in coding gain increases when total bit rates sink. Therefore, we developed an algorithm, which regards the non-separable two-dimensional filter as a polyphase filter. For each frame, predicting the interpolation filter impulse response through evaluation of the polyphase filter, we only have to encode the prediction error of the filter coefficients.
摘要翻译：标准视频压缩技术应用运动补偿预测与预测误差的变换编码相结合。在分数像素运动矢量分辨率的预测的上下文中，显示了包含在图像信号中的混叠分量限制了通过运动补偿获得的预测效率。为了考虑混叠，量化和运动估计误差，摄像机噪声等，我们分析开发了一种二维（2D）不可分离内插滤波器，通过最小化预测误差能量对每帧进行独立计算。对于要插值的每个小数像素位置，确定一组二维滤波器系数。由于发送滤波器系数作为侧信息导致附加比特率，其对于不同的图像分辨率和总比特率几乎是恒定的，所以当总比特率下降时，编码增益的损失增加。因此，我们开发了一种将不可分离的二维滤波器作为多相滤波器的算法。对于每个帧，通过评估多相滤波器来预测内插滤波器脉冲响应，我们只需要对滤波器系数的预测误差进行编码。

2. 发明申请

WO2008053029A3 METHOD FOR CONCEALING A PACKET LOSS 审中-公开
标题翻译：用于隐藏分组丢失的方法
公开(公告)号：WO2008053029A3
公开(公告)日：2008-06-26
申请号：PCT/EP2007061791
申请日：2007-10-31
申请人： UNIV HANNOVER , NGUYEN DIEU THANH , EDLER BERND , OSTERMANN JOERN , STEFANOSKI NIKOLCE
发明人： NGUYEN DIEU THANH , EDLER BERND , OSTERMANN JOERN , STEFANOSKI NIKOLCE
IPC分类号： H04N19/895 , H04N7/24 , H04N7/26 , H04N7/36
CPC分类号： H04N21/2389 , H04N19/102 , H04N19/139 , H04N19/142 , H04N19/177 , H04N19/188 , H04N19/30 , H04N19/34 , H04N19/44 , H04N19/46 , H04N19/61 , H04N19/895 , H04N21/4385
摘要： A method of concealing a packet loss during video decoding is provided. An input stream having a plurality of network abstraction layer units NAL is received. A loss of a network abstraction layer unit in a group of pictures in the input stream is detected. A valid network abstraction layer unit order from the available network abstraction layer units is outputted. The network abstraction layer unit order is received by a video coding layer (VCL) and data is outputted.
摘要翻译：提供了在视频解码期间隐藏分组丢失的方法。接收具有多个网络抽象层单元NAL的输入流。检测输入流中一组图像中网络抽象层单元的丢失。输出来自可用网络抽象层单元的有效网络抽象层单元顺序。网络抽象层单元顺序由视频编码层（VCL）接收并输出数据。

3. 发明申请

WO2008129021A3 SCALABLE COMPRESSION OF TIME-CONSISTEND 3D MESH SEQUENCES 审中-公开
标题翻译：时间约束3D网格序列的可扩展压缩
公开(公告)号：WO2008129021A3
公开(公告)日：2008-12-31
申请号：PCT/EP2008054776
申请日：2008-04-18
申请人： UNIV HANNOVER , STEFANOSKI NIKOLCE , OSTERMANN JOERN , KLIE PATRICK
发明人： STEFANOSKI NIKOLCE , OSTERMANN JOERN , KLIE PATRICK
IPC分类号： H04N7/26 , G06T9/00
CPC分类号： G06T9/001
摘要： We present a method for predictive compression of time-consistent 3D mesh sequences supporting and exploiting scalability. The applied method decomposes each frame of a mesh sequence in layers, which provides a time- consistent multi-resolution representation. Following the predictive coding paradigm, local temporal and spatial dependencies between layers and frames are exploited for layer-wise compression. Prediction is performed vertex-wise from coarse to fine layers exploiting the motion of already encoded neighboring vertices for prediction of the current vertex location. Consequently, successive layer- wise decoding allows to reconstruct frames with increasing levels of detail.
摘要翻译：我们提出了一种支持和利用可伸缩性的时间一致性三维网格序列的预测压缩方法。所应用的方法分层分解网格序列的每个帧，这提供了时间一致的多分辨率表示。遵循预测编码范例，层和帧之间的局部时间和空间相关性被用于分层压缩。预测是从粗糙层到精细层以顶点方式执行的，利用已编码的相邻顶点的运动来预测当前顶点位置。因此，连续的逐层解码允许以逐渐增加的细节水平重构帧。

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