公开(公告)号：US09190021B2

公开(公告)日：2015-11-17

申请号：US13454869

申请日：2012-04-24

申请人： Kar-Han Tan

发明人： Kar-Han Tan

IPC分类号： G09G5/14 ,  G06F3/14 ,  H04N7/14

CPC分类号： G09G5/14 ,  G06F3/1454 ,  G09G2340/10 ,  H04N7/147

摘要： Visual feedback is provided to a local user of a remote collaboration system. While an image is being captured, it is recognized that content is being shared on a screen. A composite image is generated which includes a form of the image being captured and the shared content. The composite image is caused to be displayed on a remote screen. A variably semi-transparent image of at least a portion of the composite image or the image is generated and is rendered on a portion of the screen such that the variably semi-transparent image is overlaid on any of the shared content or another composite image displayed on the screen.

摘要翻译： 向远程协作系统的本地用户提供视觉反馈。 正在捕获图像时，会识别内容正在屏幕上共享。 生成包括被捕获的图像的形式和共享内容的合成图像。 使合成图像显示在远程屏幕上。 生成合成图像或图像的至少一部分的可变半透明图像，并且将其呈现在屏幕的一部分上，使得可变半透明图像覆盖在所显示的任何共享内容或另一合成图像上 屏幕上。

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：US20140104368A1

公开(公告)日：2014-04-17

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

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：US08570423B2

公开(公告)日：2013-10-29

申请号：US12769800

申请日：2010-04-29

申请人： Ian N. Robinson ,  Kar-Han Tan

发明人： Ian N. Robinson ,  Kar-Han Tan

IPC分类号： H04N5/222 ,  H04N13/00 ,  H04N13/04 ,  H04N7/14

CPC分类号： H04N7/144 ,  H04N7/15

摘要： Embodiments of the present invention are directed to visual-collaborative systems enabling geographically distributed groups to engage in face-to-face, interactive collaborative video conferences. In one aspect, a visual-collaborative system comprises a transparent display (402) having a first surface (410) and a second surface (412); and a camera system positioned to face the second surface. The display is configured to show images that can be viewed by looking at the first surface. The display is also configured to transmit light scattered off of objects facing the first surface. The light passes through the display and is captured by the camera.

摘要翻译： 本发明的实施例涉及使地理分布的组能够参与面对面的交互式协作视频会议的视觉协作系统。 一方面，视觉协作系统包括具有第一表面（410）和第二表面（412）的透明显示器（402）。 以及定位成面对第二表面的相机系统。 显示器被配置为显示可以通过观察第一表面来观看的图像。 显示器还被配置为透射从面向第一表面的物体散射的光。 光线通过显示器并被相机捕获。

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：US20120076392A1

公开(公告)日：2012-03-29

申请号：US13309815

申请日：2011-12-02

申请人： Ali Zandifar ,  Kar-Han Tan

发明人： Ali Zandifar ,  Kar-Han Tan

IPC分类号： G06K9/00

CPC分类号： G06T7/001 ,  G01N2021/95638 ,  G06T2207/30141 ,  G06T2207/30144 ,  H05K1/0269 ,  H05K3/0005 ,  H05K3/125 ,  H05K2203/013 ,  H05K2203/163

摘要： Embodiments of the present invention enable fault detection in a printed dot-pattern image. Certain applications of the present invention are its use in various embodiments of a system for inspection of a printed circuit board (“PCB”) substrate. In embodiments, a generated distortion map is based on a comparison of a reconstructed dot-pattern image, a simulated reference bitmap, and an error map representing differences between the reconstructed dot-pattern image and the reference bitmap. In embodiments, the pixels of the distortion map are color coded to identify the locations and types of aberrations that were discovered as a result of the comparison.

摘要翻译： 本发明的实施例使得印刷的点图案图像中的故障检测成为可能。 本发明的某些应用是在用于检查印刷电路板（“PCB”）衬底的系统的各种实施例中的用途。 在实施例中，生成的失真图基于重建的点图案图像，模拟参考位图和表示重建的点图案图像与参考位图之间的差异的误差图的比较。 在实施例中，失真图的像素被颜色编码以识别作为比较的结果发现的像差的位置和类型。

公开(公告)号：US08090184B2

公开(公告)日：2012-01-03

申请号：US12178123

申请日：2008-07-23

申请人： Ali Zandifar ,  Kar-Han Tan

发明人： Ali Zandifar ,  Kar-Han Tan

IPC分类号： G06K9/00

CPC分类号： G06T7/001 ,  G01N2021/95638 ,  G06T2207/30141 ,  G06T2207/30144 ,  H05K1/0269 ,  H05K3/0005 ,  H05K3/125 ,  H05K2203/013 ,  H05K2203/163

摘要： Embodiments of the present invention enable fault detection in a printed dot-pattern image. Certain applications of the present invention are its use in various embodiments of a system for inspection of a printed circuit board (“PCB”) substrate. In embodiments, a generated distortion map is based on a comparison of a reconstructed dot-pattern image, a simulated reference bitmap, and an error map representing differences between the reconstructed dot-pattern image and the reference bitmap. In embodiments, the pixels of the distortion map are color coded to identify the locations and types of aberrations that were discovered as a result of the comparison.

公开(公告)号：US08042954B2

公开(公告)日：2011-10-25

申请号：US11963657

申请日：2007-12-21

申请人： Kar-Han Tan ,  Jing Xiao

发明人： Kar-Han Tan ,  Jing Xiao

IPC分类号： G03B21/14

CPC分类号： H04N9/3194 ,  H04N9/3147 ,  H04N9/3185

摘要： Two projected images from two projector-camera systems, each defined by characteristics c1=T1p1 and c2=T2p2, respectively, are used to create mosaic composite of a desired image c. Formulas p1=T1−1(c−T2p2) and p2=T2−1(c−T1p1) are iteratively repeated with p2 initially set to zero until p1 converges to a first mosaic image and p2 converges to a second mosaic image.

摘要翻译： 来自两个投影仪相机系统的两个投影图像分别由特征c1 = T1p1和c2 = T2p2定义，用于创建所需图像c的马赛克复合。 迭代地重复公式p1 = T1-1（c-T2p2）和p2 = T2-1（c-T1p1），p2初始设置为零，直到p1收敛到第一马赛克图像，并且p2收敛到第二马赛克图像。

公开(公告)号：US20110221718A1

公开(公告)日：2011-09-15

申请号：US13114540

申请日：2011-05-24

申请人： Kar-Han Tan ,  Edward Bagg

发明人： Kar-Han Tan ,  Edward Bagg

IPC分类号： G09G5/00

CPC分类号： H04N5/2628 ,  G03B21/005 ,  H04N9/3185

摘要： A method and system for compensating for a moving object placed between a projector and a projection scene is shown. The method/system dividing a movement pattern of the moving object into N discrete position states, and for each of said N position states determining a corresponding view projection matrix. While projecting an image within any of the N position states, multiplying a desired projection image by the corresponding view projection matrix.

摘要翻译： 示出了用于补偿放置在投影仪和投影场景之间的移动物体的方法和系统。 所述方法/系统将所述运动物体的运动模式划分成N个离散位置状态，以及为所述N个位置状态中的每一个确定相应的视图投影矩阵。 当在N个位置状态中的任一个中投影图像时，将期望的投影图像乘以相应的视图投影矩阵。

公开(公告)号：US08013904B2

公开(公告)日：2011-09-06

申请号：US12331281

申请日：2008-12-09

申请人： Kar-Han Tan ,  Tomio Sonehara

发明人： Kar-Han Tan ,  Tomio Sonehara

IPC分类号： H04N5/228

CPC分类号： H04N9/3182 ,  H04N9/3185 ,  H04N9/3194 ,  H04N17/002

摘要： A projection system uses a transformation matrix to transform a projection image p in such a manner so as to compensate for surface irregularities on a projection surface. The transformation matrix makes use of properties of light transport relating a projector to a camera. A display pipeline of user-supplied image modification processing modules are reduced by first representing the processing modules as multiple, individual matrix operations. All the matrix operations are then combined with, i.e., multiplied to, the transformation matrix to create a modified transformation matrix. The created transformation matrix is then used in place of the original transformation matrix to simultaneously achieve both image transformation and any pre and post image processing defined by the image modification processing modules.

摘要翻译： 投影系统使用变换矩阵以这样的方式变换投影图像p，以便补偿投影表面上的表面不规则性。 转换矩阵利用将投影仪与相机相关联的光传输的属性。 通过首先将处理模块表示为多个单独的矩阵操作来减少用户提供的图像修改处理模块的显示管道。 然后将所有的矩阵运算与变换矩阵组合，即乘以转换矩阵以创建修改的变换矩阵。 然后使用所创建的变换矩阵来代替原始变换矩阵，以同时实现图像变换和由图像修改处理模块定义的任何前后图像处理。