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111. 发明授权

US08204125B2 Fast motion estimation in scalable video coding 有权
标题翻译：可扩展视频编码中的快速运动估计
公开(公告)号：US08204125B2
公开(公告)日：2012-06-19
申请号：US12246111
申请日：2008-10-06
申请人： Oscar Chi Lim Au , Sui Yuk Lam
发明人： Oscar Chi Lim Au , Sui Yuk Lam
IPC分类号： H04N7/12 , H04N11/04
CPC分类号： H04N19/00787 , H04N19/13 , H04N19/31 , H04N19/52 , H04N19/533 , H04N19/61 , H04N19/615 , H04N19/63
摘要： Scalable Video Coding is recently attracting attentions due to its high flexibility. The current H.264/AVC scalable extension has adopted the Motion Compensated Temporal Filter (MCTF) framework to provide temporal scalability. In this paper, described is another fast motion estimation (ME) algorithm based on the MCTF framework. Simulation results show that the herein described algorithm can reduce the encoding complexity significantly while maintaining similar bit rate and PSNR, comparing with existing fast ME algorithms implemented in the reference software.
摘要翻译：由于其高灵活性，可扩展视频编码最近引起了人们的关注。目前的H.264 / AVC可伸缩扩展采用了运动补偿时间滤波（MCTF）框架来提供时间可扩展性。在本文中，描述了基于MCTF框架的另一种快速运动估计（ME）算法。模拟结果表明，与参考软件中实现的现有快速ME算法相比，本文所描述的算法可以显着降低编码复杂度，同时保持类似的比特率和PSNR。

112. 发明授权

US08170274B2 Method and apparatus for hiding data for halftone images 有权
标题翻译：用于隐藏半色调图像数据的方法和装置
公开(公告)号：US08170274B2
公开(公告)日：2012-05-01
申请号：US12889220
申请日：2010-09-23
申请人： Oscar Chi-Lim Au , Ming Sun Fu
发明人： Oscar Chi-Lim Au , Ming Sun Fu
IPC分类号： G06K9/00
CPC分类号： G06T1/0028 , G06T2201/0051 , G06T2201/0081 , G06T2201/0083 , H04N1/32203 , H04N1/32245 , H04N1/32256 , H04N1/4052 , H04N2201/3233 , H04N2201/327
摘要： We propose methods for generating a halftone image, in which each pixel takes one of two tone values. The generated image contains hidden data, which is present at data storage pixels chosen using a pseudo-random number generator. In a first case, the data is hidden within an existing halftone image by reversing the tone value at certain of the data storage pixels, and at pixels neighbouring the data storage pixels. In a second case, the halftone image is generated from a grey-scale image, and data is hidden during this conversion process.
摘要翻译：我们提出了生成半色调图像的方法，其中每个像素采用两个色调值之一。生成的图像包含存在于使用伪随机数生成器选择的数据存储像素处的隐藏数据。在第一种情况下，通过反转某些数据存储像素处的色调值和与数据存储像素相邻的像素，将数据隐藏在现有的半色调图像内。在第二种情况下，从灰度图像生成半色调图像，并且在该转换处理期间数据被隐藏。

113. 发明授权

US07970224B2 Efficient rate allocation for multi-resolution coding of data 有权
标题翻译：数据的多分辨率编码的有效率分配
公开(公告)号：US07970224B2
公开(公告)日：2011-06-28
申请号：US12638225
申请日：2009-12-15
申请人： Yick Ming Yeung , Oscar Chi-Lim Au
发明人： Yick Ming Yeung , Oscar Chi-Lim Au
IPC分类号： G06K9/36 , G06K9/46
CPC分类号： H04N19/1883 , H04N19/115 , H04N19/129 , H04N19/132 , H04N19/146 , H04N19/147 , H04N19/184 , H04N19/19 , H04N19/63 , H04N19/647
摘要： A method and an apparatus relates to examining respective collections of coefficients out of a plurality of collections of coefficients according to a global coding order of the plurality of collections of coefficients, the respective collections of coefficients having respective priority levels as well as respective pluralities of coding units and truncation points which correspond to the coding units. In response to determining that an examined collection of coefficients out of the plurality of collections of coefficients has a priority level equal to a global priority level, encoding a first un-encoded coding unit according to a local coding order of the collection of coefficients and reducing the priority level of the collection of coefficients; and after each of the collections of coefficients in the plurality are examined, decreasing the global priority level. Repeating the examining, the encoding, the reducing and the decreasing for the plurality of collections of coefficients, and terminating the examining, the encoding, the reducing, and the decreasing in response to determining that a total amount of bits used is greater than a target bit rate.
摘要翻译：一种方法和装置涉及根据多个系数集合的全局编码顺序来检查多个系数集合中的系数的相应集合，各个系数集合具有各自的优先级以及相应的多个编码对应于编码单位的单位和截断点。响应于确定所检查的多个系数集合中的系数集合具有等于全局优先级的优先级，根据系数集合的本地编码顺序对第一未编码编码单元进行编码，并减少系数收集的优先级; 并且在检查了多个系数的每个集合之后，减小了全局优先级。重复对多个系数集合的检查，编码，减少和减少，并且终止检查，编码，减少和减少以响应于确定使用的总位数大于目标比特率。

114. 发明授权

US07961694B1 Peer-to-peer collaborative streaming among mobile terminals 有权
标题翻译：移动终端之间的对等协作流
公开(公告)号：US07961694B1
公开(公告)日：2011-06-14
申请号：US11754985
申请日：2007-05-29
申请人： Shueng Han Gary Chan , Man Fung Leung , Oscar Chi Lim Au
发明人： Shueng Han Gary Chan , Man Fung Leung , Oscar Chi Lim Au
IPC分类号： H04W4/00
CPC分类号： H04L12/189 , H04W72/005 , H04W84/18
摘要： Systems and methods for collaborative streaming among mobile terminals. Periodically, the mobile terminals may pull a portion of the data stream from a content provider coupled thereto over a primary channel and distribute the pulled data to neighboring mobile terminals, possibly including other mobile terminals pulling portions of the data stream from the content provider and passive mobile terminals that are only receiving pulled data. By transferring data over the secondary channel, the cost to any one terminal to receive the data stream is reduced.
摘要翻译：移动终端之间协作流的系统和方法。周期性地，移动终端可以通过主信道从连接到其上的内容提供商拉取数据流的一部分，并将所拉取的数据分发到相邻的移动终端，可能包括其他移动终端从内容提供者和被动的部分拉出数据流的部分只接收拉数据的移动终端。通过在次级信道上传送数据，减少了任何一个终端接收数据流的成本。

115. 发明申请

US20100322306A1 SCALAR QUANTIZATION USING BIT-STEALING FOR VIDEO PROCESSING 有权
标题翻译：使用位移处理视频处理的标量定标
公开(公告)号：US20100322306A1
公开(公告)日：2010-12-23
申请号：US12818797
申请日：2010-06-18
申请人： Oscar Chi Lim Au , Ngai Man Cheung , Xingyu Zhang
发明人： Oscar Chi Lim Au , Ngai Man Cheung , Xingyu Zhang
IPC分类号： H04N7/26
CPC分类号： H04N19/124 , H04N19/126 , H04N19/14 , H04N19/176 , H04N19/60
摘要： Systems, methods, and apparatus for adaptively zeroing out transform coefficients utilizing a bit-stealing parameter are presented herein. A partitioning component can be configured to separate an image into blocks of video data. Further, a frequency transform component can be configured to transform pixels of a block of the blocks into transform coefficients. Furthermore, a bit-stealing quantization component configured to predefine quantization intervals. Moreover, the bit-stealing quantization component can modify a size of a quantization interval of the quantization intervals based on a variable bit-stealing parameter. Further, the bit-stealing component can quantize a transform coefficient of the transform coefficients, based on the quantization interval, to a quantized coefficient value of quantized coefficient values.
摘要翻译：本文给出了使用位窃取参数自适应地调整变换系数的系统，方法和装置。分区组件可以被配置为将图像分离成视频数据块。此外，频率变换分量可以被配置为将块的块的像素变换为变换系数。此外，被配置为预定义量化间隔的位窃取量化分量。此外，位窃取量化分量可以基于可变位窃取参数修改量化间隔的量化间隔的大小。此外，位窃取组件可以将量化间隔的变换系数的变换系数量化为量化系数值的量化系数值。

116. 发明申请

US20100215106A1 EFFICIENT MULTI-FRAME MOTION ESTIMATION FOR VIDEO COMPRESSION 审中-公开
标题翻译：用于视频压缩的有效的多帧运动估计
公开(公告)号：US20100215106A1
公开(公告)日：2010-08-26
申请号：US12775312
申请日：2010-05-06
申请人： Oscar Chi-Lim Au , Andy Chang
发明人： Oscar Chi-Lim Au , Andy Chang
IPC分类号： H04N7/12 , G06K9/54
CPC分类号： H04N19/573
摘要： There is disclosed a method of digital signal compression, coding and representation, and more particularly a method of video compression, coding and representation system that uses multi-frame motion estimation and includes both device and method aspects. The invention also provides a computer program product, such as a recording medium, carrying program instructions readable by a computing device to cause the computing device to carry out a method according to the invention.
摘要翻译：公开了一种数字信号压缩，编码和表示的方法，特别是使用多帧运动估计的视频压缩，编码和表示系统的方法，包括设备和方法两个方面。本发明还提供了诸如记录介质的计算机程序产品，其携带由计算设备可读的程序指令，以使计算设备执行根据本发明的方法。

117. 发明申请

US20100150463A1 EFFICIENT RATE ALLOCATION FOR MULTI-RESOLUTION CODING OF DATA 有权
标题翻译：数据的多分辨率编码的有效率分配
公开(公告)号：US20100150463A1
公开(公告)日：2010-06-17
申请号：US12638225
申请日：2009-12-15
申请人： Yick Ming Yeung , Oscar Chi-Lim Au
发明人： Yick Ming Yeung , Oscar Chi-Lim Au
IPC分类号： G06K9/36
CPC分类号： H04N19/1883 , H04N19/115 , H04N19/129 , H04N19/132 , H04N19/146 , H04N19/147 , H04N19/184 , H04N19/19 , H04N19/63 , H04N19/647
摘要： There are disclosed three fast rate control methods that can efficiently reduce or remove the computation and memory usage redundancy over conventional PCRD methods. The first method, called successive bit-plane rate allocation (SBRA), assigns the maximum allowable bit-rate for each bit-plane of each code-block by using the currently available rate-distortion information only. The second method is called priority scanning rate allocation (PSRA). This first predicts the order of magnitude of each truncation point's rate-distortion slope and then encodes the truncation points based on the order (priority) information. The third method uses PSRA to obtain a significantly smaller amount of data than PCRD for optimal truncation and is called priority scanning with optimal truncation (PSOT). SBRA provides the highest computational complexity and memory usage reduction, and the lowest coding/transmission delay. The computational complexity reduction can be up to about 90% of the entropy coding process. However this method gives the lowest PSNR performance of the three. PSRA provides higher PSNR performance than SBRA with the penalty of lower memory usage reduction and higher delay. PSOT provides the best (optimal) quality while it is the least efficient method in term of computational complexity, memory usage and the coding/transmission delay. The three methods provide different degree of computation complexity and memory reduction, coding/transmission delay and PSNR performance. The most suitable rate control method can be chosen based on application requirements.
摘要翻译：已经公开了三种快速速率控制方法，其可以有效地减少或消除常规PCRD方法的计算和存储器使用冗余。称为连续位平面速率分配（SBRA）的第一种方法仅通过使用当前可用的速率失真信息为每个码块的每个位平面分配最大允许比特率。第二种方法称为优先扫描速率分配（PSRA）。这首先预测每个截断点的速率 - 失真斜率的数量级，然后根据顺序（优先级）信息对截断点进行编码。第三种方法使用PSRA获得比PCRD更少的数据量以获得最佳截断，并称为具有最佳截断（PSOT）的优先扫描。 SBRA提供了最高的计算复杂度和内存使用减少，以及最低的编码/传输延迟。计算复杂度降低可高达熵编码过程的大约90％。然而，这种方法给出了三种最低的PSNR性能。 PSRA提供比SBRA更高的PSNR性能，同时降低内存使用量的降低和更高的延迟。 PSOT提供最佳（最优）的质量，而在计算复杂度，内存使用和编码/传输延迟方面，PSOT是最不有效的方法。这三种方法提供了不同程度的计算复杂度和内存缩减，编码/传输延迟和PSNR性能。最合适的速率控制方法可以根据应用需求进行选择。

118. 发明授权

US07697715B2 Methods and apparatus for hiding data in halftone images 失效
标题翻译：在半色调图像中隐藏数据的方法和装置
公开(公告)号：US07697715B2
公开(公告)日：2010-04-13
申请号：US11233732
申请日：2005-09-22
申请人： Oscar Chi-Lim Au , Ming Sun Fu
发明人： Oscar Chi-Lim Au , Ming Sun Fu
IPC分类号： G06K9/00
CPC分类号： G06T1/0028 , G06T2201/0051 , G06T2201/0081 , G06T2201/0083 , H04N1/32203 , H04N1/32245 , H04N1/32256 , H04N1/4052 , H04N2201/3233 , H04N2201/327
摘要： We propose methods for generating a halftone image, in which each pixel takes one of two tone values. The generated image contains hidden data, which is present at data storage pixels chosen using a pseudo-random number generator. In a first case, the data is hidden within an existing halftone image by reversing the tone value at certain of the data storage pixels, and at pixels neighbouring the data storage pixels. In a second case, the halftone image is generated from a grey-scale image, and data is hidden during this conversion process.
摘要翻译：我们提出了生成半色调图像的方法，其中每个像素采用两个色调值之一。生成的图像包含存在于使用伪随机数生成器选择的数据存储像素处的隐藏数据。在第一种情况下，通过反转某些数据存储像素处的色调值和与数据存储像素相邻的像素，将数据隐藏在现有的半色调图像内。在第二种情况下，从灰度图像生成半色调图像，并且在该转换处理期间数据被隐藏。

119. 发明申请

US20090190845A1 MOTION-COMPENSATED RESIDUE BASED TEMPORAL SEARCH RANGE PREDICTION 审中-公开
标题翻译：运动补偿基于时间的搜索范围预测
公开(公告)号：US20090190845A1
公开(公告)日：2009-07-30
申请号：US12019067
申请日：2008-01-24
申请人： Oscar Chi Lim Au , Liwei Guo
发明人： Oscar Chi Lim Au , Liwei Guo
IPC分类号： G06K9/36
CPC分类号： H04N19/58 , H04N19/52 , H04N19/523 , H04N19/557 , H04N19/57 , H04N19/573
摘要： Efficient temporal search range predication for motion estimation in video coding is provided where complexity of using multiple reference frames in multiple reference frame motion estimation (MRFME) can be evaluated over a desired performance level. In this regard, a gain can be determined for using regular motion estimation or MRFME, and a number of frames if the latter is chosen. Thus, the computational complexity of MRFME and/or a large temporal search range can be utilized where it provides at least a threshold gain in performance. Conversely, if the complex calculations of MRFME do not provide sufficient benefit to the video block prediction, a smaller temporal search range (a less number of reference frames) can be used, or regular motion editing can be chosen over MRFME.
摘要翻译：提供了用于视频编码中的运动估计的有效的时间搜索范围预测，其中在多个参考帧运动估计（MRFME）中使用多个参考帧的复杂度可以在期望的性能水平上进行评估。在这方面，可以确定使用常规运动估计或MRFME的增益，并且如果选择后者则可以确定多个帧。因此，可以利用MRFME和/或大的时间搜索范围的计算复杂性，其中至少提供性能上的阈值增益。相反，如果MRFME的复杂计算不能为视频块预测提供足够的益处，则可以使用更小的时间搜索范围（较少数量的参考帧），或者可以在MRFME上选择常规运动编辑。

120. 发明申请

US20090135911A1 FAST MOTION ESTIMATION IN SCALABLE VIDEO CODING 有权
标题翻译：可扩展视频编码中的快速运动估计
公开(公告)号：US20090135911A1
公开(公告)日：2009-05-28
申请号：US12246111
申请日：2008-10-06
申请人： Oscar Chi Lim Au , Sui Yuk Lam
发明人： Oscar Chi Lim Au , Sui Yuk Lam
IPC分类号： H04N11/02 , H04N7/12
CPC分类号： H04N19/00787 , H04N19/13 , H04N19/31 , H04N19/52 , H04N19/533 , H04N19/61 , H04N19/615 , H04N19/63
摘要： Scalable Video Coding is recently attracting attentions due to its high flexibility. The current H.264/AVC scalable extension has adopted the Motion Compensated Temporal Filter (MCTF) framework to provide temporal scalability. In this paper, described is another fast motion estimation (ME) algorithm based on the MCTF framework. Simulation results show that the herein described algorithm can reduce the encoding complexity significantly while maintaining similar bit rate and PSNR, comparing with existing fast ME algorithms implemented in the reference software.
摘要翻译：由于其高灵活性，可扩展视频编码最近引起了人们的关注。目前的H.264 / AVC可伸缩扩展采用了运动补偿时间滤波（MCTF）框架来提供时间可扩展性。在本文中，描述了基于MCTF框架的另一种快速运动估计（ME）算法。模拟结果表明，与参考软件中实现的现有快速ME算法相比，本文所描述的算法可以显着降低编码复杂度，同时保持类似的比特率和PSNR。

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