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    Virtual round-table videoconference
    3.
    发明授权
    Virtual round-table videoconference 有权
    虚拟圆桌视频会议

    公开(公告)号：US08319819B2

    公开(公告)日：2012-11-27

    申请号：US12055861

    申请日：2008-03-26

    申请人： Alan J. MacDonald ,  J. William Mauchly ,  David W. Sowa ,  Joseph T. Friel

    发明人： Alan J. MacDonald ,  J. William Mauchly ,  David W. Sowa ,  Joseph T. Friel

    IPC分类号： H04N7/14

    CPC分类号： H04N7/15 ,  H04N7/142 ,  H04N7/181

    摘要： A system and method for creating a virtual round table videoconference is described. An embodiment of the system comprises a plurality of displays arranged in an arc configuration with a table to create a virtual round table. Cameras are arranged around the plurality of displays such that when a participant looks at a display with an image of a remote participant, the camera associated with the display captures an image of the participant's gaze, making eye contact with the camera. The image is displayed at the remote participant's endpoint creating the effect of eye contact between the participants. In another embodiment, audio speakers are arranged to provide directional sound such that the video source for a display and the audio source for the associated speaker are from the same endpoint.

    摘要翻译： 描述了用于创建虚拟圆桌视频会议的系统和方法。 系统的一个实施例包括以弧形配置布置的多个显示器，用于创建虚拟圆桌。 摄像机被布置在多个显示器周围，使得当参与者用远程参与者的图像观看显示器时，与显示器相关联的相机捕获参与者的注视的图像，与相机进行目标接触。 图像显示在远程参与者的端点处，从而创建参与者之间的眼神接触的效果。 在另一个实施例中，音频扬声器被布置成提供定向声音，使得用于显示器的视频源和相关联的扬声器的音频源来自相同的端点。

    VIRTUAL ROUND-TABLE VIDEOCONFERENCE
    4.
    发明申请
    VIRTUAL ROUND-TABLE VIDEOCONFERENCE 有权
    虚拟环形视频会议

    公开(公告)号：US20090244257A1

    公开(公告)日：2009-10-01

    申请号：US12055861

    申请日：2008-03-26

    申请人： Alan J. MacDonald ,  J. William Mauchly ,  David W. Sowa ,  Joseph T. Friel

    发明人： Alan J. MacDonald ,  J. William Mauchly ,  David W. Sowa ,  Joseph T. Friel

    IPC分类号： H04N7/14 ,  H04R5/00

    CPC分类号： H04N7/15 ,  H04N7/142 ,  H04N7/181

    摘要： A system and method for creating a virtual round table videoconference is described. An embodiment of the system comprises a plurality of displays arranged in an arc configuration with a table to create a virtual round table. Cameras are arranged around the plurality of displays such that when a participant looks at a display with an image of a remote participant, the camera associated with the display captures an image of the participant's gaze, making eye contact with the camera. The image is displayed at the remote participant's endpoint creating the effect of eye contact between the participants. In another embodiment, audio speakers are arranged to provide directional sound such that the video source for a display and the audio source for the associated speaker are from the same endpoint.

    摘要翻译： 描述了用于创建虚拟圆桌视频会议的系统和方法。 系统的一个实施例包括以弧形配置布置的多个显示器，用于创建虚拟圆桌。 摄像机被布置在多个显示器周围，使得当参与者用远程参与者的图像观看显示器时，与显示器相关联的相机捕获参与者的注视的图像，与相机进行目标接触。 图像显示在远程参与者的端点处，从而创建参与者之间的眼神接触的效果。 在另一个实施例中，音频扬声器被布置成提供定向声音，使得用于显示器的视频源和相关联的扬声器的音频源来自相同的端点。

    Combined Face Detection and Background Registration
    5.
    发明申请
    Combined Face Detection and Background Registration 有权
    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。

    LONG TERM REFERENCE FRAME MANAGEMENT WITH ERROR FEEDBACK FOR COMPRESSED VIDEO COMMUNICATION
    7.
    发明申请
    LONG TERM REFERENCE FRAME MANAGEMENT WITH ERROR FEEDBACK FOR COMPRESSED VIDEO COMMUNICATION 有权
    用于压缩视频通信的长期参考框架管理与错误反馈

    公开(公告)号：US20080247463A1

    公开(公告)日：2008-10-09

    申请号：US11736717

    申请日：2007-04-18

    申请人： Maurice J. Buttimer ,  J. William Mauchly ,  Joseph T. Friel

    发明人： Maurice J. Buttimer ,  J. William Mauchly ,  Joseph T. Friel

    IPC分类号： H04N7/12

    CPC分类号： H04N19/105 ,  H04N19/164 ,  H04N19/46 ,  H04N19/58 ,  H04N19/61 ,  H04N19/895

    摘要： An apparatus, software encoded in tangible media, and a method at an encoder. The method includes sending compressed video data including a reference frame message to create a long term reference frame to a plurality of decoders at one or more destination points, receiving feedback from the decoders indicative of whether or not the decoders successfully received the reference frame message, and in the case that the received feedback is such that at least one of the decoders did not successfully receive the reference frame message or does not have the indicated recent frame, repeating sending a reference frame message to create the long term reference frame. Using the method can replaces I-frame error recovery with long term reference frames, even in the case where the reference frame management messages are lost to at least one decoder.

    摘要翻译： 一种在有形媒体中编码的软件，以及编码器的方法。 该方法包括发送包括参考帧消息的压缩视频数据，以在一个或多个目的地点向多个解码器创建长期参考帧，从解码器接收指示解码器是否成功接收到参考帧消息的反馈， 并且在接收到的反馈使得至少一个解码器没有成功接收到参考帧消息或者没有所指示的最近帧的情况下，重复发送参考帧消息以创建长期参考帧。 即使在参考帧管理消息丢失到至少一个解码器的情况下，使用该方法也可以用长期参考帧替代I帧错误恢复。

    Long term reference frame management with error video feedback for compressed video communication
    8.
    发明授权
    Long term reference frame management with error video feedback for compressed video communication 有权
    长期参考帧管理与压缩视频通信的错误视频反馈

    公开(公告)号：US08494049B2

    公开(公告)日：2013-07-23

    申请号：US11736717

    申请日：2007-04-18

    申请人： Maurice J. Buttimer ,  J. William Mauchly ,  Joseph T. Friel

    发明人： Maurice J. Buttimer ,  J. William Mauchly ,  Joseph T. Friel

    IPC分类号： H04N7/12

    CPC分类号： H04N19/105 ,  H04N19/164 ,  H04N19/46 ,  H04N19/58 ,  H04N19/61 ,  H04N19/895

    摘要： An apparatus, software encoded in tangible media, and a method at an encoder. The method includes sending compressed video data including a reference frame message to create a long term reference frame to a plurality of decoders at one or more destination points, receiving feedback from the decoders indicative of whether or not the decoders successfully received the reference frame message, and in the case that the received feedback is such that at least one of the decoders did not successfully receive the reference frame message or does not have the indicated recent frame, repeating sending a reference frame message to create the long term reference frame. Using the method can replaces I-frame error recovery with long term reference frames, even in the case where the reference frame management messages are lost to at least one decoder.

    摘要翻译： 一种在有形媒体中编码的软件，以及编码器的方法。 该方法包括发送包括参考帧消息的压缩视频数据，以在一个或多个目的地点向多个解码器创建长期参考帧，从解码器接收指示解码器是否成功接收到参考帧消息的反馈， 并且在接收到的反馈使得至少一个解码器没有成功接收到参考帧消息或者没有所指示的最近帧的情况下，重复发送参考帧消息以创建长期参考帧。 即使在参考帧管理消息丢失到至少一个解码器的情况下，使用该方法也可以用长期参考帧替代I帧错误恢复。

    Combined face detection and background registration
    10.
    发明授权
    Combined face detection and background registration 有权
    组合面部检测和背景注册

    公开(公告)号：US08218831B2

    公开(公告)日：2012-07-10

    申请号：US12164292

    申请日：2008-06-30

    申请人： Dihong Tian ,  Joseph T. Friel ,  J. William Mauchly ,  Maurice J. Buttimer ,  Wen-hsiung Chen

    发明人： Dihong Tian ,  Joseph T. Friel ,  J. William Mauchly ,  Maurice J. Buttimer ,  Wen-hsiung Chen

    IPC分类号： G06K9/00 ,  G06K9/72 ,  G06K9/62

    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。