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21. 发明授权

US08223836B2 Constant-quality rate control system and algorithm for regions of interest 有权
标题翻译：恒定质量率控制系统和感兴趣区域的算法
公开(公告)号：US08223836B2
公开(公告)日：2012-07-17
申请号：US11889874
申请日：2007-08-17
申请人： Ping-Hao Wu , Homer H. Chen
发明人： Ping-Hao Wu , Homer H. Chen
IPC分类号： H04N7/12
CPC分类号： H04N19/59 , H04N19/115 , H04N19/124 , H04N19/147 , H04N19/17 , H04N19/33 , H04N19/61
摘要： A constant-quality rate control system and algorithm for multiple encoders with a single video source are disclosed. The system comprises a base encoder, a region of interest (ROI) detector, and at least one ROI encoder. The base encoder encodes a base video sequence which is a down-sampled version of a video sequence and sends the base video sequence to a multiplexer. The ROI detector extracts an ROI video sequence from the original video sequence. The ROI encoder encodes the ROI video sequence and sends it to the multiplexer. The ROI encoder uses information obtained during encoding of the base video sequence to improve the encoding of the ROI video sequence. The information of the base video sequence are used to better control the bit-rate and the quality of the ROI video sequence.
摘要翻译：公开了具有单个视频源的多个编码器的恒定质量速率控制系统和算法。该系统包括基本编码器，感兴趣区域（ROI）检测器和至少一个ROI编码器。基本编码器编码基本视频序列，其是视频序列的下采样版本，并将基本视频序列发送到多路复用器。 ROI检测器从原始视频序列中提取ROI视频序列。 ROI编码器编码ROI视频序列并将其发送到多路复用器。 ROI编码器使用在基本视频序列的编码期间获得的信息来改善ROI视频序列的编码。基本视频序列的信息用于更好地控制ROI视频序列的比特率和质量。

22. 发明申请

US20110008032A1 AUTOFOCUS METHOD 有权
标题翻译：自动方法
公开(公告)号：US20110008032A1
公开(公告)日：2011-01-13
申请号：US12780490
申请日：2010-05-14
申请人： Dong-Chen Tsai , Homer H. Chen
发明人： Dong-Chen Tsai , Homer H. Chen
IPC分类号： G03B13/00
CPC分类号： G03B13/00
摘要： An autofocus method for obtaining clear images characterized by: adjusting the lens position with an initial dataset of focus values to obtain a estimated lens position; moving the lens to the estimated lens position and acquiring the corresponding focus value; determining whether the estimated lens position is sufficiently proximate to the prior estimated lens position, wherein, if it is, the autofocus process stops, and, if not, repeating the above-described steps until a lens position having an optimal focus value is obtained, thereby obtaining the clearest image with increased focusing speed and reduced time of lens movement and without the need of empirical parameters.
摘要翻译：一种用于获得清晰图像的自动对焦方法，其特征在于：利用聚焦值的初始数据集来调整透镜位置以获得估计的透镜位置; 将透镜移动到估计的透镜位置并获取相应的聚焦值; 确定估计的透镜位置是否足够靠近先前估计的透镜位置，其中如果是，则自动聚焦处理停止，如果不是，则重复上述步骤，直到获得具有最佳聚焦值的透镜位置，从而以更高的聚焦速度获得最清晰的图像，减少镜头运动的时间，而不需要经验参数。

23. 发明授权

US6069631A Coding of facial animation parameters (FAPs) for transmission of synthetic talking head video over band limited channels 失效
标题翻译：面向动画参数（FAP）的编码用于频带限制频道上的合成通话头视频的传输
公开(公告)号：US6069631A
公开(公告)日：2000-05-30
申请号：US7978
申请日：1998-01-16
申请人： Hai Tao , Thomas S. Huang , Homer H. Chen , Wei Wu
发明人： Hai Tao , Thomas S. Huang , Homer H. Chen , Wei Wu
IPC分类号： H04N7/32 , G06T9/00 , G06T13/00 , H03M7/30 , H04N7/26 , H04N7/50 , G06F15/00
CPC分类号： G06T9/001 , G06T13/00 , H04N19/27 , H04N19/30 , H04N19/61 , H04N19/619 , A63F2300/6607
摘要： A FAP coding technique that realizes enough coding gain to transmit multiple synthetic talking heads over a band limited channel without introducing perceptible artifacts into the reconstructed synthetic talking heads. This is accomplished by exploiting the spatial correlation of each FAP frame and/or the temporal correlation of the sequence of FAP frames. To remove intra-frame correlation, each FAP frame is transformed prior to segmentation from the n-dimensional space into an m-dimensional subspace where m
摘要翻译：一种FAP编码技术，其实现足够的编码增益，以在频带限制信道上传输多个合成语音头，而不会在可重构的合成语音头中引入可感知的伪影。这通过利用每个FAP帧的空间相关性和/或FAP帧序列的时间相关性来实现。为了去除帧内相关性，在从n维空间到使用能量压缩变换的m

24. 发明授权

US5675376A Method for achieving eye-to-eye contact in a video-conferencing system 失效
标题翻译：在视频会议系统中实现眼睛接触的方法
公开(公告)号：US5675376A
公开(公告)日：1997-10-07
申请号：US575972
申请日：1995-12-21
申请人： Russell Lennart Andersson , Homer H. Chen
发明人： Russell Lennart Andersson , Homer H. Chen
IPC分类号： H04N7/14 , H04N7/26 , H04M11/00
CPC分类号： H04N7/144 , H04N7/142 , H04N19/20
摘要： Methods for achieving eye-to-eye contact in a video-conferencing system use a controller to calculate eye contours, radius profiles, and positions from images stored in memory. Once the contours and radius profiles are generated, an eye image can be "shifted" to achieve eye-to-eye contact.
摘要翻译：在视频会议系统中实现眼睛接触的方法使用控制器从存储在存储器中的图像中计算眼睛轮廓，半径分布和位置。一旦生成轮廓和半径轮廓，眼睛图像可以被“移位”以实现眼睛接触。

25. 发明授权

US5608839A Sound-synchronized video system 失效
标题翻译：声音同步视频系统
公开(公告)号：US5608839A
公开(公告)日：1997-03-04
申请号：US263271
申请日：1994-06-21
申请人： Homer H. Chen
发明人： Homer H. Chen
IPC分类号： H04N7/14 , G10L21/06 , H04M11/06 , H04N7/26 , H04N7/52 , H04N21/2368 , H04N21/434 , G10L5/06 , G10L9/00
CPC分类号： H04N21/4341 , H04N21/4307 , H04N21/4394 , H04N21/44008 , G10L2021/105 , G11B2220/90 , H04N19/20
摘要： A stream of unsynchronized audio signal, representing speech and video signal of a speaker, is processed by decoding the signal, memorizing a plurality of visemes corresponding to phonemes in the audio signal, fetching from the plurality visemes corresponding to phonemes in the audio signal, and imparting a synchronism to the video signal and audio signal by applying the fetched visemes to the unsynchronized video signal of the stream in synchronism with corresponding phonemes in the audio signal of the stream. According to an embodiment, the fetching step includes fetching visemes of the lip movement. The system is suitable for use in a videophone.
摘要翻译：通过对信号进行解码来处理代表说话者的语音和视频信号的不同步音频信号流，从音频信号中对应于音素的多个视角中取出对应于音频信号中的音素的多个视力，以及通过在流的音频信号中与对应的音素同步地将获取的视度应用于流的不同步的视频信号来赋予视频信号和音频信号的同步。根据实施例，提取步骤包括获取唇部运动的视力。该系统适用于可视电话。

26. 发明授权

US5608458A Method and apparatus for a region-based approach to coding a sequence of video images 失效
标题翻译：用于对视频图像序列进行编码的基于区域的方法的方法和装置
公开(公告)号：US5608458A
公开(公告)日：1997-03-04
申请号：US322893
申请日：1994-10-13
申请人： Homer H. Chen , Touradj Ebrahimi , Barin G. Haskell , Caspar Horne
发明人： Homer H. Chen , Touradj Ebrahimi , Barin G. Haskell , Caspar Horne
IPC分类号： G06T9/00 , H03M7/36 , H04N7/26 , H04N7/30 , H04N7/32 , H04N7/36 , H04N7/50
CPC分类号： H04N19/649 , H04N19/107 , H04N19/51 , H04N19/537 , H04N19/543 , H04N19/61 , H04N19/20
摘要： An encoder segments frames in a sequence of digital images into multiple regions of arbitrary shape each of which has a corresponding motion vector relative to a previous decoded frame. A hierarchical multi-resolution motion estimation and segmentation technique, which segments the frame into multiple blocks and which assigns a best motion vector to each block is used. Blocks having the same or similar motion vector are then merged to form the arbitrarily-shaped regions. The shape of each region is coded, and a decision is made to code additional image data of each region in one of three modes. In a first inter-frame mode, a motion vector associated with a region is encoded. In a second inter-frame mode, a prediction error for the region is also encoded. In an intra-frame mode, the intensity of each picture element in the region is encoded. A region interior coder with frequency domain region-zeroing and space domain region-enforcing operations is employed for effectively coding the interior image data of the arbitrarily-shaped regions. The region interior coder uses an iterative technique based on the theory of successive projection onto convex sets (POCS) to find the best values for a group of selected transform coefficients. The coded information, including the shape of the region, the choice of the mode, and the motion vector and/or the region's interior image data, may then be transmitted to a decoder where the image can be reconstructed.
摘要翻译：编码器将数字图像序列中的帧划分为任意形状的多个区域，每个区域具有相对于先前解码的帧的相应运动向量。使用分层多分辨率运动估计和分割技术，其将帧分割成多个块并且向每个块分配最佳运动矢量。然后将具有相同或相似运动矢量的块合并以形成任意形状的区域。编码每个区域的形状，并且决定以三种模式之一对每个区域的附加图像数据进行编码。在第一帧间模式中，对与区域相关联的运动矢量进行编码。在第二帧间模式中，还对该区域的预测误差进行编码。在帧内模式中，对该区域中的每个像素的强度进行编码。采用具有频域区域归零和空域域执行操作的区域内部编码器来有效地编码任意形状区域的内部图像数据。区域内部编码器使用基于连续投影到凸集（POCS）的理论的迭代技术来找到一组选定的变换系数的最佳值。然后可以将包括区域的形状，模式的选择以及运动矢量和/或区域的内部图像数据的编码信息发送到可以重建图像的解码器。

27. 发明授权

US08924466B2 Server handoff in content delivery network 有权
标题翻译：内容传送网络中的服务器切换
公开(公告)号：US08924466B2
公开(公告)日：2014-12-30
申请号：US11978656
申请日：2007-10-30
申请人： Steven L. Seed , Kevin Hobbs , Shane M. Glynn , Isaac W. Foraker , Peter J. Jones , Homer H. Chen , William Patrick Greer
发明人： Steven L. Seed , Kevin Hobbs , Shane M. Glynn , Isaac W. Foraker , Peter J. Jones , Homer H. Chen , William Patrick Greer
IPC分类号： G06F15/16
CPC分类号： H04L67/1095 , H04L67/1002 , H04L67/2814 , H04L67/2842 , H04L67/2852 , H04L67/2885
摘要： A content delivery method directs a request by a client for an object to a first server in a content delivery network (CDN), regardless of whether the first server has the requested object. If the first server has the requested object, then it is served to the client from the first server; otherwise, the first server redirects the client request to a second server in the CDN to handle the request. The second server may be a peer server of the first server. The first and second servers may be edge servers in the CDN.
摘要翻译：内容递送方法将用于对象的客户端的请求定向到内容递送网络（CDN）中的第一服务器，而不管第一服务器是否具有所请求的对象。如果第一个服务器具有所请求的对象，则从第一个服务器向客户端提供服务; 否则，第一个服务器将客户端请求重定向到CDN中的第二个服务器来处理该请求。第二服务器可以是第一服务器的对等服务器。第一和第二服务器可以是CDN中的边缘服务器。

28. 发明授权

US08782123B2 Server handoff in content delivery network 有权
公开(公告)号：US08782123B2
公开(公告)日：2014-07-15
申请号：US11978656
申请日：2007-10-30
申请人： Steven L. Seed , Kevin Hobbs , Shane M. Glynn , Isaac W. Foraker , Peter J. Jones , Homer H. Chen
发明人： Steven L. Seed , Kevin Hobbs , Shane M. Glynn , Isaac W. Foraker , Peter J. Jones , Homer H. Chen
IPC分类号： G06F15/16
摘要： A content delivery method directs a request by a client for an object to a first server in a content delivery network (CDN), regardless of whether the first server has the requested object. If the first server has the requested object, then it is served to the client from the first server; otherwise, the first server redirects the client request to a second server in the CDN to handle the request. The second server may be a peer server of the first server. The first and second servers may be edge servers in the CDN.

29. 发明授权

US08373721B2 Method of realism assessment of an image composite 有权
标题翻译：图像复合的现实评估方法
公开(公告)号：US08373721B2
公开(公告)日：2013-02-12
申请号：US12637608
申请日：2009-12-14
申请人： Bing-Yi Wong , Homer H. Chen , Chia-Kai Liang , Tai-Hsu Lin
发明人： Bing-Yi Wong , Homer H. Chen , Chia-Kai Liang , Tai-Hsu Lin
IPC分类号： G09G5/00 , G09G5/02 , G06K9/00 , G06K9/40 , G06K9/36 , G03F3/08 , G06T7/00 , H04N1/46 , H04N1/40 , H04N5/202 , H04N5/445 , H04N9/64
CPC分类号： G06T11/001
摘要： In a method of realism assessment of an image composite, the foreground and the background are transformed into a color space, such as YCbCr, followed by projecting the foreground and the background to a subspace represented by the axes representing chromatic information. The image composite is assessed in the projected subspace, according to linearity of color distributions of the foreground/the background, or according to distance between the color distributions of the foreground/the background and a center of the transformed color space.
摘要翻译：在图像复合物的现实评估方法中，将前景和背景变换为诸如YCbCr的颜色空间，然后将前景和背景投影到由表示彩色信息的轴表示的子空间。根据前景/背景的颜色分布的线性，或根据前景/背景的颜色分布与变换的颜色空间的中心之间的距离，在投影的子空间中评估图像合成。

30. 发明授权

US08094163B2 Method of directing a viewer's attention subliminally in image display 有权
标题翻译：在图像显示中引导观众注意力的方法
公开(公告)号：US08094163B2
公开(公告)日：2012-01-10
申请号：US12331359
申请日：2008-12-09
申请人： Homer H. Chen , Tai-Hsiang Huang , Su-Ling Yeh , San-Yuan Lin , Lin-Kai Bu , Ling-Hsiu Huang
发明人： Homer H. Chen , Tai-Hsiang Huang , Su-Ling Yeh , San-Yuan Lin , Lin-Kai Bu , Ling-Hsiu Huang
IPC分类号： G09G5/00 , H04N5/44 , H04N5/445 , H04N5/50 , H04N7/10 , G06K9/40 , G06F17/00
CPC分类号： H04N21/44012 , H04N21/23412 , H04N21/234318 , H04N21/8456
摘要： A method of directing a viewer's attention in an image display to enhance the perceived image quality and thus the viewer's preference of the image is disclosed. An image with an area of interest (AOI) is provided. The AOI is briefly displayed for a first time period. Subsequently, the image is normally displayed in its entirety for a second time period that is longer than the first time period. As a result, the viewer's attention is involuntarily directed to the AOI in a subliminal manner.
摘要翻译：公开了一种将观众的注意力引导到图像显示器中以增强感知图像质量并因此提高观看者对图像的喜好的方法。提供具有感兴趣区域（AOI）的图像。 AOI将在第一时间内简要显示。随后，通常将图像整体显示为比第一时间段长的第二时间段。结果，观众的注意力不经意地以潜意识的方式指向AOI。

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