公开(公告)号：US20120274732A1

公开(公告)日：2012-11-01

申请号：US13098277

申请日：2011-04-29

申请人： Kar-Han Tan ,  Ramin Samadani

发明人： Kar-Han Tan ,  Ramin Samadani

IPC分类号： H04N5/21 ,  H04N7/14

CPC分类号： H04N7/15

摘要： Methods and systems that reduce video crosstalk in video streams sent between participants in a video conference are disclosed. In one aspect, a method for reducing video crosstalk in a video stream sent from a local site to a remote site includes projecting a video stream of the remote site onto a screen at the local site. Each image in the video stream is dimmed according to a dimming factor of a dimming sequence. Crosstalk images of the local site are captured through the screen. Each crosstalk image is a blending of the image of the local site captured through the screen with a dimmed image of the remote site projected onto the screen. Images of the local site with reduced crosstalk are computed based on the dimming sequence. A video stream composed of the images of the local site with reduced crosstalk are sent to the remote site.

摘要翻译： 公开了减少在视频会议中的参与者之间发送的视频流中的视频串扰的方法和系统。 一方面，一种用于减少从本地站点发送到远程站点的视频流中的视频串扰的方法包括将远程站点的视频流投影到本地站点的屏幕上。 视频流中的每个图像根据调光序列的调光因子而变暗。 通过屏幕捕获本地站点的串扰图像。 每个串扰图像是通过屏幕捕获的本地站点的图像与投影到屏幕上的远程站点的暗淡图像的混合。 基于调光顺序计算串扰减小的本地站点图​​像。 将由串扰减小的本地站点的图像组成的视频流发送到远程站点。

公开(公告)号：US09179078B2

公开(公告)日：2015-11-03

申请号：US13878224

申请日：2010-10-08

申请人： Ramin Samadani ,  Kar-Han Tan

发明人： Ramin Samadani ,  Kar-Han Tan

IPC分类号： G09G5/02 ,  H04N5/272 ,  G06T7/40

CPC分类号： H04N5/272 ,  G06T7/41 ,  G06T2207/10016 ,  G06T2207/20221

摘要： Methods, computer-readable media, and systems are provided for combining multiple video streams. One method for combining the multiple video streams includes extracting a sequence of media frames (224-1/224-2) from presenter (222-1) video and from shared digital rich media (222-2) video (340). The media frame (224-1/224-2) content is analyzed (226) to determine a set of space and time varying alpha values (228/342). A compositing operation (230) is performed to produce the combined video frames (232) based on the content analysis (226/344).

摘要翻译： 提供了用于组合多个视频流的方法，计算机可读介质和系统。 用于组合多个视频流的一种方法包括从演示者（222-1）视频和从共享数字富媒体（222-2）视频（340）提取媒体帧序列（224-1 / 224-2）。 分析媒体帧（224-1 / 224-2）内容（226）以确定一组空间和时变α值（228/342）。 执行合成操作（230）以基于内容分析（226/344）产生组合的视频帧（232）。

公开(公告)号：US08570357B2

公开(公告)日：2013-10-29

申请号：US13098277

申请日：2011-04-29

申请人： Kar-Han Tan ,  Ramin Samadani

发明人： Kar-Han Tan ,  Ramin Samadani

IPC分类号： H04N7/14

CPC分类号： H04N7/15

摘要： Methods and systems that reduce video crosstalk in video streams sent between participants in a video conference are disclosed. In one aspect, a method for reducing video crosstalk in a video stream sent from a local site to a remote site includes projecting a video stream of the remote site onto a screen at the local site. Each image in the video stream is dimmed according to a dimming factor of a dimming sequence. Crosstalk images of the local site are captured through the screen. Each crosstalk image is a blending of the image of the local site captured through the screen with a dimmed image of the remote site projected onto the screen. Images of the local site with reduced crosstalk are computed based on the dimming sequence. A video stream composed of the images of the local site with reduced crosstalk are sent to the remote site.

摘要翻译： 公开了减少在视频会议中的参与者之间发送的视频流中的视频串扰的方法和系统。 一方面，一种用于减少从本地站点发送到远程站点的视频流中的视频串扰的方法包括将远程站点的视频流投影到本地站点的屏幕上。 视频流中的每个图像根据调光序列的调光因子而变暗。 通过屏幕捕获本地站点的串扰图像。 每个串扰图像是通过屏幕捕获的本地站点的图像与投影到屏幕上的远程站点的暗淡图像的混合。 基于调光顺序计算串扰减小的本地站点图​​像。 将由串扰减小的本地站点的图像组成的视频流发送到远程站点。

公开(公告)号：US20100245381A1

公开(公告)日：2010-09-30

申请号：US12413543

申请日：2009-03-28

申请人： Ramin Samadani ,  Kar-Han Tan

发明人： Ramin Samadani ,  Kar-Han Tan

IPC分类号： G09G5/02

CPC分类号： G09G5/06

摘要： For each of multiple image pixels, input color component values of the pixel in an input device-dependent color space are transformed to output color component values in an output device-dependent color space characterized by an output color gamut defined by a respective gamut range for each of the output color components. In this process, the input color component values of the pixel are multiplied with corresponding elements of a device-dependent characterization matrix to produce a set of product values. The output color component values are derived from the product values. The values of a particular one of the output color components are ascertained based on a continuous nonlinear companding function that maps a function input value derived from one or more of the product values to a function output value that increases monotonically with increasing function input values over the respective gamut range of the particular output color component.

摘要翻译： 对于多个图像像素中的每一个，输入设备相关颜色空间中的像素的输入颜色分量值被变换为输出设备相关颜色空间中的输出颜色分量值，其特征在于由相应色域范围定义的输出色域， 每个输出颜色分量。 在该过程中，像素的输入颜色分量值与设备相关特征矩阵的相应元素相乘以产生一组乘积值。 输出颜色分量值是从产品值导出的。 输出颜色分量中的特定值的值基于连续非线性压扩功能来确定，所述连续非线性压扩功能将从一个或多个乘积值导出的函数输入值映射到功能输出值，该函数输出值随着函数输入值的增加而逐渐增加 特定输出颜色分量的各自的色域范围。

公开(公告)号：US20130188094A1

公开(公告)日：2013-07-25

申请号：US13878224

申请日：2010-10-08

申请人： Ramin Samadani ,  Kar-Han Tan

发明人： Ramin Samadani ,  Kar-Han Tan

IPC分类号： H04N5/272

CPC分类号： H04N5/272 ,  G06T7/41 ,  G06T2207/10016 ,  G06T2207/20221

摘要： Methods, computer-readable media, and systems are provided for combining multiple video streams. One method for combining the multiple video streams includes extracting a sequence of media frames (224-1/224-2) from presenter (222-1) video and from shared digital rich media (222-2) video (340). The media frame (224-1/224-2) content is analyzed (226) to determine a set of space and time varying alpha values (228/342). A compositing operation (230) is performed to produce the combined video frames (232) based on the content analysis (226/344).

公开(公告)号：US09143724B2

公开(公告)日：2015-09-22

申请号：US14123350

申请日：2011-07-06

申请人： Kar-Han Tan

发明人： Kar-Han Tan

IPC分类号： H04N7/14 ,  H04N7/15 ,  H04N9/31

CPC分类号： H04N7/144 ,  H04N7/147 ,  H04N7/15 ,  H04N9/3147

摘要： Embodiments of the present invention disclose a telepresence portal system. According to one embodiment, the telepresence portal system includes a host portal having a plurality of host transparent displays arranged to face different sides of a host user. Furthermore, each host transparent display is associated with an image capturing device for capturing different viewpoint images of the host user. A remote portal is in communication with the host portal and includes a plurality of remote transparent displays arranged to correspond with the positions of the host transparent displays. In addition, each remote transparent display renders a viewpoint image of the host user on the corresponding remote transparent display for view by at least one remote user.

摘要翻译： 本发明的实施例公开了一种远程呈现门户系统。 根据一个实施例，远程呈现门户系统包括具有多个主机透明显示器的主机门户，该多个主机透明显示器布置成面对主机用户的不同侧面。 此外，每个主机透明显示器与用于捕获主机用户的不同视点图像的图像捕获设备相关联。 远程门户与主机门户通信，并且包括布置成与主机透明显示器的位置对应的多个远程透明显示器。 此外，每个远程透明显示器将主用户的视点图像呈现在相应的远程透明显示器上，供至少一个远程用户观看。

公开(公告)号：US08908008B2

公开(公告)日：2014-12-09

申请号：US13806531

申请日：2010-07-16

申请人： Kar-Han Tan ,  Ian N. Robinson

发明人： Kar-Han Tan ,  Ian N. Robinson

IPC分类号： H04N7/14 ,  H04N7/15 ,  H04N9/31

CPC分类号： H04N7/144 ,  H04N7/15 ,  H04N9/3179

摘要： In one aspect, a method includes capturing images of a first participant through a display using a camera. The display is located between the first participant and the camera. A video stream of images of a second participant is also received. The images of the second participant are shifted in accordance with a shift vector. The shift vector places the images of the second participant's face in approximate alignment with the eyes of the first participant and the lens of the camera. The shifted images are projected on the display using a projector.

摘要翻译： 一方面，一种方法包括通过使用相机的显示来捕获第一参与者的图像。 显示器位于第一参与者和相机之间。 还接收第二参与者的图像的视频流。 根据移位矢量移动第二参与者的图像。 移动矢量将第二参与者的脸部的图像与第一参与者的眼睛和相机的镜头大致对准。 移动的图像使用投影仪投影在显示器上。

公开(公告)号：US08558894B2

公开(公告)日：2013-10-15

申请号：US12947191

申请日：2010-11-16

申请人： Kar-Han Tan ,  Bowon Lee

发明人： Kar-Han Tan ,  Bowon Lee

IPC分类号： H04N5/225

CPC分类号： H04N7/16 ,  G09B5/06 ,  G09B5/08 ,  H04N7/142

摘要： A method for presentation interaction. The method includes, receiving by a computer system an indication of a manual selection of a region proximate to an audience member of an audience wherein the indication is received via an interaction with a displayed image of the audience. The method also includes utilizing a microphone array communicatively coupled with a beam-forming component of the computer system to focus audio pickup from the region proximate to the audience member in response to receiving the indication. The method also includes displaying an enhanced image of the region proximate to the audience member using the computer system in response to receiving the indication.

摘要翻译： 呈现交互的方法。 该方法包括：由计算机系统接收关于接近受众的观众成员的区域的手动选择的指示，其中通过与观众的显示图像的交互来接收该指示。 该方法还包括利用与计算机系统的波束形成部件通信耦合的麦克风阵列，以便响应于接收到指示，将来自接近受众成员的区域的音频拾取聚焦。 该方法还包括响应于接收到指示而使用计算机系统显示接近受众成员的区域的增强图像。

公开(公告)号：US20130093838A1

公开(公告)日：2013-04-18

申请号：US13806531

申请日：2010-07-16

申请人： Kar-Han Tan ,  Ian N. Robinson

发明人： Kar-Han Tan ,  Ian N. Robinson

IPC分类号： H04N7/14

CPC分类号： H04N7/144 ,  H04N7/15 ,  H04N9/3179

摘要： Embodiments of the present invention are directed to video-conferencing systems that create eye contact and accurate gaze awareness between video-conferencing participants. In one aspect, a method includes capturing images of a first participant through a display using a camera (801). The display is located between the first participant and the camera. A video stream encoding images of a second participant (802,905) is also received. The images of the second participant are shifted in accordance with a shift vector. The shift vector places the images of the second participant's face in approximate alignment with the eyes of the first participant and the lens of the camera (803). The shifted images are projected on the display using a projector (804).

摘要翻译： 本发明的实施例涉及视频会议系统，其在视频会议参与者之间产生眼睛接触和准确的凝视感知。 一方面，一种方法包括使用相机（801）通过显示器捕获第一参与者的图像。 显示器位于第一参与者和相机之间。 还接收编码第二参与者（802,905）的图像的视频流。 根据移位矢量移动第二参与者的图像。 移位矢量将第二参与者的脸部的图像与第一参与者的眼睛和相机的镜头大致对准（803）。 使用投影仪将移动后的图像投影在显示器上（804）。

公开(公告)号：US20120274727A1

公开(公告)日：2012-11-01

申请号：US13097481

申请日：2011-04-29

申请人： Ian N. Robinson ,  Kar-Han Tan ,  Daniel George Gelb

发明人： Ian N. Robinson ,  Kar-Han Tan ,  Daniel George Gelb

IPC分类号： H04N7/15

CPC分类号： H04N7/15

摘要： Video conferencing methods and systems that enable shared content to be displayed in a separate window within a screen or in a separate display are described. In one aspect, a method for establishing a video conference with shared content using a computing device includes capturing images of a first participant through a screen using a camera. The screen is located between the first participant and the camera. The method also includes projecting images of a second participant on the screen to be viewed by the first participant using a projector, and displaying shared content separate from the images of the second participant. The shared content is to be presented in different format than the images of the second participant presented on the screen.

摘要翻译： 描述使共享内容能够在屏幕或单独显示器中的单独窗口中显示的视频会议方法和系统。 一方面，使用计算装置建立具有共享内容的视频会议的方法包括使用相机通过屏幕拍摄第一参与者的图像。 屏幕位于第一个参与者和相机之间。 该方法还包括投影屏幕上的第二参与者的图像，以使用投影仪由第一参与者观看，并且显示与第二参与者的图像分离的共享内容。 共享内容将以与屏幕上呈现的第二参与者的图像不同的格式呈现。