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    • 5. 发明授权
    • Computer-controlled lighting for video communication
    • 计算机控制照明用于视频通信
    • US07652716B2
    • 2010-01-26
    • US11756585
    • 2007-05-31
    • Jingyu QiuRegis J. CrinonWarren V. Barkley
    • Jingyu QiuRegis J. CrinonWarren V. Barkley
    • H04N5/222H04N7/14
    • H04N5/2351H04N5/2354
    • A video communication system may include a computer program that implements a feedback control process for automatically controlling a light. The feedback control process may include receiving an image from a video camera and determining an initial difference between the received image and a stored image. For example, the feedback control process may determine, on a pixel-by-pixel basis, whether the color and intensity of a facial region in the captured image is sufficiently close to the color and intensity of a facial region in the stored image. If the difference between the captured image and the stored image exceeds a threshold, the feedback control process includes transmitting an optimization instruction to the light. This optimization instruction, when performed by the light, decreases the difference between the received image and the stored image.
    • 视频通信系统可以包括实现用于自动控制光的反馈控制过程的计算机程序。 反馈控制过程可以包括从摄像机接收图像并确定接收到的图像与存储的图像之间的初始差异。 例如,反馈控制处理可以逐像素地确定拍摄图像中的面部区域的颜色和强度是否足够接近存储图像中的面部区域的颜色和强度。 如果拍摄图像和存储的图像之间的差超过阈值,则反馈控制处理包括向光发射优化指令。 当由光执行时,该优化指令降低了接收到的图像与存储的图像之间的差异。
    • 10. 发明授权
    • Optimizing conferencing performance
    • 优化会议性能
    • US07782802B2
    • 2010-08-24
    • US11964376
    • 2007-12-26
    • Tim M. MooreWarren V. BarkleyYiu-Ming Leung
    • Tim M. MooreWarren V. BarkleyYiu-Ming Leung
    • H04L12/16H04M1/00G06F15/16
    • H04M3/567H04L12/1827H04L47/10H04L47/2441H04L65/4038H04L65/608H04L65/80
    • Optimized conferencing performance may be provided. First, a plurality of data streams respectively received from a plurality of conferencing users may be monitored. Then, for each of the plurality of conferencing users, a plurality of talk frequency conditions respectively corresponding to the plurality of conferencing users may be determined based upon the monitored plurality of data streams. The plurality of talk frequency conditions may comprise, for example, active-talker, infrequent talker, or listener-only. Next, a plurality of data packet size values respectively corresponding to the plurality of conferencing users may be determined based upon the determined plurality of talk frequency conditions. The plurality of data streams may then be mixed to create data. Next, the data may be transmitted to each of the plurality of conferencing users respectively using the determined plurality of data packet size values respectively corresponding to the plurality of conferencing users.
    • 可以提供优化的会议性能。 首先,可以监视分别从多个会议用户接收的多个数据流。 然后,对于多个会议用户中的每一个,可以基于所监视的多个数据流来确定分别对应于多个会议用户的多个通话频率状况。 多个通话频率条件可以包括例如主动说话者,不频繁的讲话者或仅收听者。 接下来,可以基于确定的多个通话频率条件来确定分别对应于多个会议用户的多个数据分组大小值。 然后可以混合多个数据流以创建数据。 接下来,可以分别使用分别对应于多个会议用户的确定的多个数据分组大小值将数据发送到多个会议用户中的每一个。