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1. 发明授权

US08854486B2 Method and system for processing multiview videos for view synthesis using skip and direct modes 有权
标题翻译：用于使用跳过和直接模式处理视频合成的多视点视频的方法和系统
公开(公告)号：US08854486B2
公开(公告)日：2014-10-07
申请号：US13299195
申请日：2011-11-17
申请人： Dong Tian , Ngai-Man Cheung , Anthony Vetro
发明人： Dong Tian , Ngai-Man Cheung , Anthony Vetro
IPC分类号： H04N5/225 , H04N13/02 , H04N7/12 , H04N19/122 , H04N19/174 , H04N7/18 , H04N19/61 , H04N19/597 , H04N19/105 , H04N19/176 , H04N19/423 , H04N19/51 , H04N19/577 , H04N19/27 , H04N19/159 , H04N19/70 , H04N19/172 , H04N19/63 , H04N19/635 , H04N19/132 , H04N19/615 , H04N19/46 , H04N19/14 , H04N19/147 , H04N19/54 , H04N19/13
CPC分类号： H04N19/008 , H04N7/181 , H04N19/105 , H04N19/122 , H04N19/13 , H04N19/132 , H04N19/14 , H04N19/147 , H04N19/159 , H04N19/172 , H04N19/174 , H04N19/176 , H04N19/27 , H04N19/423 , H04N19/46 , H04N19/52 , H04N19/54 , H04N19/573 , H04N19/577 , H04N19/597 , H04N19/61 , H04N19/615 , H04N19/619 , H04N19/63 , H04N19/635 , H04N19/70
摘要： Multiview videos are acquired by overlapping cameras. Side information is used to synthesize multiview videos. A reference picture list is maintained for current frames of the multiview videos, the reference picture indexes temporal reference pictures and spatial reference pictures of the acquired multiview videos and the synthesized reference pictures of the synthesized multiview video. Each current frame of the multiview videos is predicted according to reference pictures indexed by the associated reference picture list with a skip mode and a direct mode, whereby the side information is inferred from the synthesized reference picture. Alternatively, the depth images corresponding to the multiview videos of the input data, and this data are encoded as part of the bitstream depending on a SKIP type.
摘要翻译：多视角视频是通过重叠的相机获得的。侧面信息用于合成多视点视频。维护多视点视频的当前帧的参考图片列表，参考图片索引所获取的多视角视频的时间参考图片和空间参考图片以及合成的多视角视频的合成参考图片。根据由相关联的参考图像列表以跳过模式和直接模式索引的参考图像来预测多视图视频的每个当前帧，由此从合成的参考图片推断出侧面信息。或者，与输入数据的多视点视频相对应的深度图像，并且该数据根据SKIP类型被编码为比特流的一部分。

2. 发明申请

US20120062756A1 Method and System for Processing Multiview Videos for View Synthesis Using Skip and Direct Modes 有权
标题翻译：用于使用跳过和直接模式查看合成的多视图视频的方法和系统
公开(公告)号：US20120062756A1
公开(公告)日：2012-03-15
申请号：US13299195
申请日：2011-11-17
申请人： Dong Tian , Ngai-Man Cheung , Anthony Vetro
发明人： Dong Tian , Ngai-Man Cheung , Anthony Vetro
IPC分类号： H04N5/225
CPC分类号： H04N19/008 , H04N7/181 , H04N19/105 , H04N19/122 , H04N19/13 , H04N19/132 , H04N19/14 , H04N19/147 , H04N19/159 , H04N19/172 , H04N19/174 , H04N19/176 , H04N19/27 , H04N19/423 , H04N19/46 , H04N19/52 , H04N19/54 , H04N19/573 , H04N19/577 , H04N19/597 , H04N19/61 , H04N19/615 , H04N19/619 , H04N19/63 , H04N19/635 , H04N19/70
摘要： Multiview videos are acquired by overlapping cameras. Side information is used to synthesize multiview videos. A reference picture list is maintained for current frames of the multiview videos, the reference picture indexes temporal reference pictures and spatial reference pictures of the acquired multiview videos and the synthesized reference pictures of the synthesized multiview video. Each current frame of the multiview videos is predicted according to reference pictures indexed by the associated reference picture list with a skip mode and a direct mode, whereby the side information is inferred from the synthesized reference picture. Alternatively, the depth images corresponding to the multiview videos of the input data, and this data are encoded as part of the bitstream depending on a SKIP type.
摘要翻译：多视角视频是通过重叠的相机获得的。侧面信息用于合成多视点视频。维护多视点视频的当前帧的参考图片列表，参考图片索引所获取的多视角视频的时间参考图片和空间参考图片以及合成的多视角视频的合成参考图片。根据由相关联的参考图像列表以跳过模式和直接模式索引的参考图像来预测多视图视频的每个当前帧，由此从合成的参考图片推断出侧面信息。或者，与输入数据的多视点视频相对应的深度图像，并且该数据根据SKIP类型被编码为比特流的一部分。

3. 发明授权

US08692840B2 Method for modeling and estimating rendering errors in virtual images 有权
标题翻译：在虚拟图像中建模和估计渲染错误的方法
公开(公告)号：US08692840B2
公开(公告)日：2014-04-08
申请号：US13366348
申请日：2012-02-05
申请人： Ngai-Man Cheung , Dong Tian , Anthony Vetro , Huifang Sun
发明人： Ngai-Man Cheung , Dong Tian , Anthony Vetro , Huifang Sun
IPC分类号： G06T15/00 , G09G5/00 , G06K9/40 , G06K9/00 , G06K9/36 , G06F3/048
CPC分类号： G06T15/04 , G06T7/0002 , G06T15/20 , G06T2207/10012 , G06T2207/30168
摘要： A quality of a virtual image for a synthetic viewpoint in a 3D scene is determined. The 3D scene is acquired by texture images, and each texture image is associated with a depth image acquired by a camera arranged at a real viewpoint. A texture noise power is based on the acquired texture images and reconstructed texture images corresponding to a virtual texture image. A depth noise power is based on the depth images and reconstructed depth images corresponding to a virtual depth image. The quality of the virtual image is based on a combination of the texture noise power and the depth noise power, and the virtual image is rendered from the reconstructed texture images and the reconstructed depth images.
摘要翻译：确定3D场景中的合成视点的虚拟图像的质量。 3D场景由纹理图像获取，并且每个纹理图像与由布置在实际视点上的相机获取的深度图像相关联。纹理噪声功率基于所获取的纹理图像和对应于虚拟纹理图像的重建纹理图像。深度噪声功率基于对应于虚拟深度图像的深度图像和重建的深度图像。虚拟图像的质量基于纹理噪声功率和深度噪声功率的组合，并且从重建的纹理图像和重建的深度图像中渲染虚拟图像。

4. 发明申请

US20130201177A1 Method for Modeling and Estimating Rendering Errors in Virtual Images 有权
标题翻译：虚拟图像中渲染错误的建模和估计方法
公开(公告)号：US20130201177A1
公开(公告)日：2013-08-08
申请号：US13366348
申请日：2012-02-05
申请人： Ngai-Man Cheung , Dong Tian , Anthony Vetro , Huifang Sun
发明人： Ngai-Man Cheung , Dong Tian , Anthony Vetro , Huifang Sun
IPC分类号： G06T15/00
CPC分类号： G06T15/04 , G06T7/0002 , G06T15/20 , G06T2207/10012 , G06T2207/30168
摘要： A quality of a virtual image for a synthetic viewpoint in a 3D scene is determined. The 3D scene is acquired by texture images, and each texture image is associated with a depth image acquired by a camera arranged at a real viewpoint. A texture noise power is based on the acquired texture images and reconstructed texture images corresponding to a virtual texture image. A depth noise power is based on the depth images and reconstructed depth images corresponding to a virtual depth image. The quality of the virtual image is based on a combination of the texture noise power and the depth noise power, and the virtual image is rendered from the reconstructed texture images and the reconstructed depth images.
摘要翻译：确定3D场景中的合成视点的虚拟图像的质量。 3D场景由纹理图像获取，并且每个纹理图像与由布置在实际视点上的相机获取的深度图像相关联。纹理噪声功率基于所获取的纹理图像和对应于虚拟纹理图像的重建纹理图像。深度噪声功率基于对应于虚拟深度图像的深度图像和重建的深度图像。虚拟图像的质量基于纹理噪声功率和深度噪声功率的组合，并且从重建的纹理图像和重建的深度图像中渲染虚拟图像。

5. 发明授权

US08111760B2 Deblocking filters 有权
标题翻译：去块过滤器
公开(公告)号：US08111760B2
公开(公告)日：2012-02-07
申请号：US11560367
申请日：2006-11-16
申请人： Ching-Yu Hung , Ngai-Man Cheung
发明人： Ching-Yu Hung , Ngai-Man Cheung
IPC分类号： H04N7/12
CPC分类号： H04N19/86 , H04N19/117 , H04N19/14 , H04N19/176 , H04N19/182 , H04N19/61 , H04N19/82
摘要： Deblock filtering for Microsoft WMV video decoders partitions the computation so that the deblock filtering operations can be performed on horizontal or vertical stripes or in one pass on oversized macroblocks.
摘要翻译：用于Microsoft WMV视频解码器的去块过滤器对计算进行分块，使得可以在水平或垂直条纹上执行去块滤波操作，或者在超大宏块上进行一次通过。

6. 发明授权

US07113543B2 Video encoding 有权
标题翻译：视频编码
公开(公告)号：US07113543B2
公开(公告)日：2006-09-26
申请号：US10356910
申请日：2003-02-03
申请人： Ngai-Man Cheung , Yuji Itoh
发明人： Ngai-Man Cheung , Yuji Itoh
IPC分类号： H04B1/66
CPC分类号： H04N19/557 , H04N19/112 , H04N19/56
摘要： Motion compensation as for video compression with motion estimation with either frame mode or field mode by initial prediction of motion mode and when prediction error is small enough truncate motion estimation search.
摘要翻译：通过运动模式的初始预测以及预测误差足够小的运动估计搜索，可以通过帧模式或场模式进行运动估计的运动补偿。

7. 发明申请

US20070002949A1 Fast partial pixel motion estimation for video encoding 审中-公开
标题翻译：用于视频编码的快速部分像素运动估计
公开(公告)号：US20070002949A1
公开(公告)日：2007-01-04
申请号：US11173293
申请日：2005-06-30
申请人： Ngai-Man Cheung , Yiliang Bao
发明人： Ngai-Man Cheung , Yiliang Bao
IPC分类号： H04N11/02
CPC分类号： H04N19/523
摘要： Fast partial pixel motion estimation for video encoding can include a technique in which a current partition mode is determined. Where the current partition mode is a 16 by 16 mode, an estimation module compares the gain from a half-pel motion estimation against a half-pel gain threshold and, if the gain exceeds the half-pel gain threshold, the estimation module performs a quarter-pel motion estimation for an entire partition. Where the current partition mode is a 16 by 8 or a 8 by 16 mode, the estimation module determines if a current partition is the first partition in the current macroblock. If the current partition is the first partition in the current macroblock, the estimation module performs a quarter-pel motion estimation for the current partition, determines if the gain from quarter-pel motion estimation is greater than a quarter-pel gain threshold, and sets a flag to true if the gain from quarter-pel motion estimation is greater and the flag to false if the gain from quarter-pel motion estimation is not greater. If the current partition is not the first partition in the current macroblock, the estimation module determines if the flag is true or false and, if true, estimation module performs a quarter-pel motion estimation for the current partition.
摘要翻译：用于视频编码的快速部分像素运动估计可以包括确定当前分区模式的技术。在当前分区模式是16×16模式的情况下，估计模块将来自半像素运动估计的增益与半像素增益阈值进行比较，并且如果增益超过半像素增益阈值，则估计模块执行整个分区的四分之一像素运动估计。在当前分区模式是16×8或8×16模式的情况下，估计模块确定当前分区是否是当前宏块中的第一分区。如果当前分区是当前宏块中的第一分区，则估计模块对当前分区执行四分之一像素运动估计，确定来自四分之一像素运动估计的增益是否大于四分之一像素增益阈值，并且设置如果来自四分之一像素运动估计的增益较大，并且如果来自四分之一像素运动估计的增益不大，则该标志为假。如果当前分区不是当前宏块中的第一分区，则估计模块确定标志是真还是假，如果为真，则估计模块对当前分区执行四分之一像素运动估计。

8. 发明授权

US07155472B2 Fixed-point quantizer for video coding 有权
标题翻译：用于视频编码的定点量化器
公开(公告)号：US07155472B2
公开(公告)日：2006-12-26
申请号：US10364636
申请日：2003-02-11
申请人： Ngai-Man Cheung , Ho-Cheon Wey , Yuji Itoh
发明人： Ngai-Man Cheung , Ho-Cheon Wey , Yuji Itoh
IPC分类号： G06F7/38
CPC分类号： G06F7/535 , G06F7/49947 , G06F2207/5356 , G06T9/005
摘要： A quantizer employs a scaled integral inverse ratio division for quantization of an input T by a quantization step Q. The quantizer forms an integral approximation q of 2r/Q by either trunc(2r/Q) or round(2r/Q). A multiplier multiplies the absolute value of T by the q. An adjustment factor is added alternatively to the absolute value of T prior to multiplication or to the product after multiplication. This adjustment factor minimizes errors near transition points in the quantization. This invention is applicable to both trunc(T/Q) and round(T/Q).
摘要翻译：量化器采用缩放的积分逆比除法，用于通过量化步长Q对输入T进行量化。量化器通过trunc（2＆lt; r＆lt; / SUP> / Q）或圆（2 / Q）。乘数将T的绝对值乘以q。调整因子与乘法前的T的绝对值或乘法后的乘积相加。该调整因子使量化中的转变点附近的误差最小化。本发明适用于trunc（T / Q）和round（T / Q）。

9. 发明授权

US07720151B2 Motion estimation using early decision for goodness of estimation with quick convergence feedback 有权
标题翻译：运动估计使用早期的决策优先估计与快速收敛反馈
公开(公告)号：US07720151B2
公开(公告)日：2010-05-18
申请号：US10364094
申请日：2003-02-11
申请人： Yuji Itoh , Ho-Cheon Wey , Ngai-Man Cheung
发明人： Yuji Itoh , Ho-Cheon Wey , Ngai-Man Cheung
IPC分类号： H04N7/12
CPC分类号： H04N19/557 , H04N5/145
摘要： This invention is a method for speeding up block matching based motion estimation for video encoder. The invention 1) calculates statistics for a candidate motion vector for a predetermined fraction of the pixels of a macroblock, 2) makes an early decision based on this preliminary cost function, and 3) terminates the block matching process without calculating the cost function for other pixels if the preliminary cost function is not less than a predetermined threshold. This early decision for goodness estimation provides an economy of processing load when a large portion of data is left untouched (i.e. unprocessed). The present invention employs feedback control to reduce the predetermined threshold for quick convergence upon each detection of a better match.
摘要翻译：本发明是用于加速视频编码器的基于块匹配的运动估计的方法。本发明1）计算宏块像素的预定分数的候选运动矢量的统计量，2）基于该初步成本函数进行早期决定，3）终止块匹配处理而不计算其他的成本函数如果初步成本函数不小于预定阈值，则为像素。这种对善良估计的早期决定提供了当大部分数据保持不变（即未处理）时处理负载的经济性。本发明采用反馈控制来减少每次检测更好匹配时快速收敛的预定阈值。

10. 发明申请

US20080117980A1 Deblocking Filters 有权
标题翻译：去块过滤器
公开(公告)号：US20080117980A1
公开(公告)日：2008-05-22
申请号：US11560367
申请日：2006-11-16
申请人： Ching-Yu Hung , Ngai-Man Cheung
发明人： Ching-Yu Hung , Ngai-Man Cheung
IPC分类号： H04N7/26
CPC分类号： H04N19/86 , H04N19/117 , H04N19/14 , H04N19/176 , H04N19/182 , H04N19/61 , H04N19/82
摘要： Deblock filtering for Microsoft WMV video decoders partitions the computation so that the deblock filtering operations can be performed on horizontal or vertical stripes or in one pass on oversized macroblocks.
摘要翻译：用于Microsoft WMV视频解码器的去块过滤器对计算进行分块，使得可以在水平或垂直条纹上执行去块滤波操作，或者在超大宏块上进行一次通过。

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