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31. 发明申请

US20090324023A1 Combined Face Detection and Background Registration 有权
标题翻译：组合面部检测和背景注册
公开(公告)号：US20090324023A1
公开(公告)日：2009-12-31
申请号：US12164292
申请日：2008-06-30
申请人： Dihong Tian , Joseph T. Friel , J. William Mauchly , Maurice J. Buttimer , We-hsiung Chen
发明人： Dihong Tian , Joseph T. Friel , J. William Mauchly , Maurice J. Buttimer , We-hsiung Chen
IPC分类号： G06K9/00 , G06K9/34
CPC分类号： H04N19/17 , G06K9/00234 , G06K9/00335
摘要： Techniques are provided to analyze video frames of a video signal in order to distinguish regions containing a face (and body torso) from regions that contain a relatively static background. The region containing the face is referred to as a foreground region. A current video frame is divided into a plurality of elements and the foreground regions and background regions are detected. The background regions of a subsequent video frame are detected/registered using the foreground regions of the current video frame. The foreground regions of the subsequent video frame are determined using the background regions of the current video frame as a temporal reference.
摘要翻译：提供技术来分析视频信号的视频帧，以区分包含脸部（和身体躯干）的区域与包含相对静态背景的区域。包含脸部的区域被称为前景区域。当前视频帧被分成多个元素，并且检测前景区域和背景区域。使用当前视频帧的前景区域检测/注册后续视频帧的背景区域。使用当前视频帧的背景区域作为时间参考确定后续视频帧的前景区域。

32. 发明授权

US5537477A Frequency characteristic shaping circuitry and method 失效
标题翻译：频率特征整形电路及方法
公开(公告)号：US5537477A
公开(公告)日：1996-07-16
申请号：US503879
申请日：1995-07-18
申请人： Edouard A. Gauthier , J. William Mauchly
发明人： Edouard A. Gauthier , J. William Mauchly
IPC分类号： H04R25/00
CPC分类号： H04R25/356 , H04R25/502
摘要： Frequency characteristic shaping circuitry having a plurality of bandpass filters to which an audio signal is supplied and a plurality of variable gain attenuators individually associated with the bandpass filters. The output signals of the variable gain attenuators are supplied to a pair of summing circuits, one providing a sum of the attenuator output signals and the other providing an inverted version of the sum of the attenuator output signals. The sum of the attenuator output signals and the inverted version of the sum of the attenuator output signals are combined in a final summing circuit. In another aspect of the present invention, each bandpass filter has a second variable gain attenuator and the output signals of these attenuators are supplied to another pair of summing circuits, one providing a sum of these attenuator output signals and the other providing an inverted version of the sum of these attenuator output signals. The sum of these attenuator output signals and the inverted version of the sum of these attenuator output signals are combined in a another final summing circuit. The outputs of the two final summing circuits are sampled over variable periods of time determined by the loudness level of the audio signal supplied to the bandpass filters.
摘要翻译：具有提供音频信号的多个带通滤波器的频率特征整形电路和与带通滤波器分别相关联的多个可变增益衰减器。可变增益衰减器的输出信号被提供给一对求和电路，一对提供衰减器输出信号之和，另一个提供衰减器输出信号之和的反相形式。衰减器输出信号的总和和衰减器输出信号的和的反相形式组合在最后的求和电路中。在本发明的另一方面，每个带通滤波器具有第二可变增益衰减器，并且这些衰减器的输出信号被提供给另一对求和电路，一个提供这些衰减器输出信号之和，另一对提供一个反相的这些衰减器输出信号的总和。这些衰减器输出信号的总和和这些衰减器输出信号的和的反相形式被组合在另一个最终求和电路中。两个最终求和电路的输出在由提供给带通滤波器的音频信号的响度水平确定的可变时间段上进行采样。

33. 发明授权

US08786670B2 Network synchronization video for composite video streams 有权
标题翻译：用于复合视频流的网络同步视频
公开(公告)号：US08786670B2
公开(公告)日：2014-07-22
申请号：US12904493
申请日：2010-10-14
申请人： J. William Mauchly
发明人： J. William Mauchly
IPC分类号： H04N7/14
CPC分类号： H04N7/15 , H04N21/242 , H04N21/2665 , H04N21/4223 , H04N21/4307 , H04N21/4788 , H04N21/64753
摘要： Techniques are provided for upstream video sources to be synchronized in vertical sync time and in frame rate, so that a downstream device can create a composite image with low latency. At a video compositor device, a plurality of video streams are received that include at least first and second video streams. First and second vertical synchronization points associated with the first and second video streams points are determined. A difference in time between the first and second vertical synchronization points is determined. At least one control signal or message is generated that is configured to change a video capture frame rate associated with one or both of the first and second video streams to reduce the difference in time and the control message is sent to video capture devices for one or both of the first and second video streams. Techniques are also provided for upstream video sources, e.g., cameras, to receive the control message and respond accordingly.
摘要翻译：提供了用于在垂直同步时间和帧速率下同步的上游视频源的技术，使得下游设备可以创建具有低等待时间的合成图像。在视频合成器设备处，接收至少包括第一和第二视频流的多个视频流。确定与第一和第二视频流点相关联的第一和第二垂直同步点。确定第一和第二垂直同步点之间的时间差。生成至少一个控制信号或消息，其被配置为改变与第一和第二视频流中的一个或两个相关联的视频捕获帧速率以减少时间差异，并且控制消息被发送到视频捕获设备，用于一个或第一和第二视频流。还为上游视频源（例如摄像机）提供技术来接收控制消息并相应地进行响应。

34. 发明授权

US08723914B2 System and method for providing enhanced video processing in a network environment 有权
标题翻译：用于在网络环境中提供增强的视频处理的系统和方法
公开(公告)号：US08723914B2
公开(公告)日：2014-05-13
申请号：US12950786
申请日：2010-11-19
申请人： David J. Mackie , Dihong Tian , Andrew P. Weir , Maurice Buttimer , Joseph T. Friel , J. William Mauchly , Wen-Hsiung Chen
发明人： David J. Mackie , Dihong Tian , Andrew P. Weir , Maurice Buttimer , Joseph T. Friel , J. William Mauchly , Wen-Hsiung Chen
IPC分类号： H04N7/15
CPC分类号： H04N7/15 , H04N7/142
摘要： A method is provided in one example and includes receiving a video input from a camera element; using change detection statistics to identify background image data; using the background image data as a temporal reference to determine foreground image data of a particular video frame within the video input; using a selected foreground image for a background registration of a subsequent video frame; and providing at least a portion of the subsequent video frame to a next destination.
摘要翻译：在一个示例中提供了一种方法，并且包括从相机元件接收视频输入; 使用变化检测统计来识别背景图像数据; 使用背景图像数据作为时间参考来确定视频输入内的特定视频帧的前景图像数据; 使用所选择的前景图像来进行后续视频帧的背景注册; 以及将后续视频帧的至少一部分提供给下一个目的地。

35. 发明授权

US08358328B2 Multiple video camera processing for teleconferencing 有权
标题翻译：用于电话会议的多种摄像机处理
公开(公告)号：US08358328B2
公开(公告)日：2013-01-22
申请号：US12275119
申请日：2008-11-20
申请人： Joseph T. Friel , J. William Mauchly
发明人： Joseph T. Friel , J. William Mauchly
IPC分类号： H04N7/15
CPC分类号： H04N7/15
摘要： A method, an apparatus, and a storage medium with executable code to execute a method including accepting camera views of at least some participants of a teleconference, each view from a corresponding video camera, with the camera views together including at least one view of each participant. The method includes accepting audio from a plurality of microphones, and processing the audio from the plurality of microphones to generate audio data and direction information indicative of the direction of sound received at the microphones. The method further includes generating one or more candidate people views, with each people view being of an area enclosing a head and shoulders view of at least one participant. The method also includes making a selection, according to the direction information, of which at least one of the candidate people views are to be transmitted to one or more remote endpoints.
摘要翻译：一种具有可执行代码的方法，装置和存储介质，用于执行包括接收电话会议的至少一些参与者的相机视图的方法，来自相应的摄像机的每个视图，相机视图在一起，包括每个视图的至少一个视图参与者该方法包括接收来自多个麦克风的音频，以及处理来自多个麦克风的音频以产生指示在麦克风处接收的声音方向的音频数据和方向信息。该方法还包括生成一个或多个候选人视图，每个人的视图是包围至少一个参与者的头部和肩部视图的区域。该方法还包括根据方向信息进行选择，至少一个候选人视图将被发送到一个或多个远程端点。

36. 发明授权

US08340180B2 Camera coupled reference frame 有权
标题翻译：相机耦合参考系
公开(公告)号：US08340180B2
公开(公告)日：2012-12-25
申请号：US12407907
申请日：2009-03-20
申请人： Alan J. MacDonald , J. William Mauchly , David W. Sowa
发明人： Alan J. MacDonald , J. William Mauchly , David W. Sowa
IPC分类号： H04N11/04
CPC分类号： H04N19/58
摘要： Techniques are provided for managing long-term reference frames (LTRFs) for two or more video sources. A first video source is selected from a plurality of video sources. The first video source is encoded to produce an encoded video stream, where a reference frame message identifies a recent video frame as long-term reference frame (LTRF) associated with the first video stream. The process is repeated for other video streams. The LTRF associated with the first video stream is used as a reference for temporal predictive coding upon receiving a signal that the first video source has been re-selected.
摘要翻译：提供了用于管理两个或多个视频源的长期参考帧（LTRF）的技术。从多个视频源中选择第一视频源。第一视频源被编码以产生编码视频流，其中参考帧消息将最近的视频帧标识为与第一视频流相关联的长期参考帧（LTRF）。对其他视频流重复该过程。与第一视频流相关联的LTRF在接收到已经重新选择第一视频源的信号时用作时间预测编码的参考。

37. 发明申请

US20120120270A1 SYSTEM AND METHOD FOR PROVIDING ENHANCED AUDIO IN A VIDEO ENVIRONMENT 有权
标题翻译：在视频环境中提供增强音频的系统和方法
公开(公告)号：US20120120270A1
公开(公告)日：2012-05-17
申请号：US12946695
申请日：2010-11-15
申请人： Wei Li , J. William Mauchly , David J. Mackie , Olin D. Williford, II , Jinshi Huang , Pawel Paszkowski , Indrajit Rajeev Gajendran , Richard T. Wales , Joseph T. Friel
发明人： Wei Li , J. William Mauchly , David J. Mackie , Olin D. Williford, II , Jinshi Huang , Pawel Paszkowski , Indrajit Rajeev Gajendran , Richard T. Wales , Joseph T. Friel
IPC分类号： H04N5/228 , G10L21/00
CPC分类号： H04N7/142 , G10L19/018 , G10L2021/02166 , H04L12/1827 , H04N5/60 , H04N21/42203 , H04N21/4222 , H04N21/439 , H04N21/4398 , H04N21/4788 , H04R2420/07 , H04S7/302 , H04S7/305
摘要： A method is provided in one example and includes receiving audio data at a microphone array that includes a plurality of microphones. The microphone array is provisioned at a first endpoint, which includes a camera element configured to capture video data associated with a video session involving the first endpoint and a second endpoint. The method also includes formatting the audio data into a time division multiplex (TDM) stream, and communicating the stream to a port for a subsequent communication over a network and to the second endpoint.
摘要翻译：在一个示例中提供了一种方法，并且包括在包括多个麦克风的麦克风阵列处接收音频数据。麦克风阵列被设置在第一端点处，其包括被配置为捕获与涉及第一端点和第二端点的视频会话相关联的视频数据的相机元件。该方法还包括将音频数据格式化为时分多路复用（TDM）流，以及将流传送到端口用于通过网络和第二端点的后续通信。

38. 发明申请

US20120050456A1 SYSTEM AND METHOD FOR PRODUCING A PERFORMANCE VIA VIDEO CONFERENCING IN A NETWORK ENVIRONMENT 审中-公开
标题翻译：通过网络环境中的视频会议生产性能的系统和方法
公开(公告)号：US20120050456A1
公开(公告)日：2012-03-01
申请号：US12870687
申请日：2010-08-27
申请人： Michael A. Arnao , J. William Mauchly
发明人： Michael A. Arnao , J. William Mauchly
IPC分类号： H04N7/15
CPC分类号： H04N7/152
摘要： A method is provided in one example and includes receiving a first audio signal and a first video signal from a first network element. The method also includes adding a second audio signal to the first audio signal to generate a combined audio signal, where a second video signal is combined with the first video signal to generate a combined video signal. The first network element and the second network element reside in different geographic locations. The combined audio signal and the combined video signal is then transmitted to a next destination.
摘要翻译：在一个示例中提供了一种方法，并且包括从第一网络元件接收第一音频信号和第一视频信号。该方法还包括将第二音频信号添加到第一音频信号以产生组合音频信号，其中第二视频信号与第一视频信号组合以产生组合视频信号。第一网元和第二网元驻留在不同的地理位置。然后将组合的音频信号和组合的视频信号发送到下一个目的地。

39. 发明申请

US20100245535A1 COMBINING VIEWS OF A PLURALITY OF CAMERAS FOR A VIDEO CONFERENCING ENDPOINT WITH A DISPLAY WALL 有权
标题翻译：组合多个摄像机的观看视频会议端点与显示墙
公开(公告)号：US20100245535A1
公开(公告)日：2010-09-30
申请号：US12411300
申请日：2009-03-25
申请人： J. William Mauchly
发明人： J. William Mauchly
IPC分类号： H04N7/14
CPC分类号： H04N7/15 , G06T7/593 , G06T15/20 , G06T2207/10012 , H04N5/23238 , H04N7/142 , H04N7/147 , H04N13/111 , H04N2013/0092
摘要： A telepresence apparatus, a method of operating a telepresence apparatus, and a tangible computer readable storage medium in a telepresence apparatus that is configured with instructions that when executed cause operating of the telepresence apparatus. The telepresence apparatus includes video cameras districted co-planar with a display wall and capturing camera views of a scene. The camera views from the video processor combined to form a video signal for transmission to one or more remote endpoints, the video signal corresponding to a synthetic view from a point that is substantially behind the wall and as if the wall was not there.
摘要翻译：一种远程呈现设备，一种在远程呈现设备中操作远程呈现设备的方法和有形计算机可读存储介质，所述远程呈现设备配置有当被执行时指示所述远程呈现设备的操作的指令。远程呈现设备包括与显示墙共面分区的摄像机，并捕获场景的摄像机视图。来自视频处理器的摄像机视图组合以形成用于传输到一个或多个远程端点的视频信号，视频信号对应于从基本上在墙后面的点的合成视图，并且好像墙不在那里。

40. 发明申请

US20100208078A1 HORIZONTAL GAZE ESTIMATION FOR VIDEO CONFERENCING 审中-公开
标题翻译：用于视频会议的水平GAZE估计
公开(公告)号：US20100208078A1
公开(公告)日：2010-08-19
申请号：US12372221
申请日：2009-02-17
申请人： Dihong Tian , Joseph T. Friel , J. William Mauchly
发明人： Dihong Tian , Joseph T. Friel , J. William Mauchly
IPC分类号： H04N5/225 , G06K9/00
CPC分类号： G06K9/00604 , G06T7/277 , G06T7/73 , G06T7/77 , G06T2207/10016 , G06T2207/30201
摘要： Techniques are provided to determine the horizontal gaze of a person from a video signal generated from viewing the person with at least one video camera. From the video signal, a head region of the person is detected and tracked. The dimensions and location of a sub-region within the head region is also detected and tracked from the video signal. An estimate of the horizontal gaze of the person is computed from a relative position of the sub-region within the head region.
摘要翻译：提供技术来确定从用至少一个摄像机观看该人而产生的视频信号中的人的水平注视。从视频信号中检测和跟踪该人的头部区域。头部区域内的子区域的尺寸和位置也从视频信号中检测和跟踪。根据头部区域中的子区域的相对位置计算人的水平注视的估计。

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