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公开(公告)号：US09369628B2
公开(公告)日：2016-06-14
申请号：US14581379
申请日：2014-12-23
Applicant: Cisco Technology, Inc.
Inventor： Dihong Tian
CPC classification number: H04N5/23238 , G06K9/00228 , H04N5/23219 , H04N5/23296 , H04N5/247 , H04N5/2621 , H04N7/15
Abstract: Video content is received at a computing device including camera views provided by video cameras that are aligned to capture images of participants within a defined space. The video cameras are aligned such that a field of view (FOV) for each camera overlaps a portion of the FOV of at least one other adjacent camera. Positions of participants depicted within the video content are detected, where target views are generated to combine as a continuous view of the video content that includes the plurality of detected participants. The target views are displayed at display devices.
Abstract translation: 在计算设备处接收视频内容，包括由摄像机提供的摄像机视图，其被对齐以捕获在定义的空间内的参与者的图像。 视频摄像机对准，使得每个摄像机的视场（FOV）与至少一个其他相邻摄像机的FOV的一部分重叠。 检测在视频内容内描绘的参与者的位置，其中生成目标视图以组合为包括多个检测到的参与者的视频内容的连续视图。 目标视图显示在显示设备上。
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公开(公告)号：US09262391B2
公开(公告)日：2016-02-16
申请号：US13867697
申请日：2013-04-22
Applicant: CISCO TECHNOLOGY, INC.
Inventor： Dau Do , Nermin Ismail , Brandon Gulrich , Dihong Tian
CPC classification number: G06F17/241 , H04L65/403 , H04L65/602 , H04L65/608 , H04N7/15 , H04N7/155
Abstract: A processing system can include an encoder to encode a real-time transmission of a presentation. A memory buffer can copy and store images of the presentation and convert the images into snapshot images. A transmitter can transmit the snapshot images to an external annotation device, and a receiver can receive annotation data of an annotation performed on the snapshot images at the external annotation device. The annotation can be encoded, in accordance with the annotation data, into the real-time transmission of the presentation to display the real-time transmission with the annotation.
Abstract translation: 处理系统可以包括编码器来编码呈现的实时传输。 内存缓冲区可以复制和存储演示文稿的图像，并将图像转换为快照图像。 发送器可以将快照图像发送到外部注释设备，并且接收器可以接收在外部注释设备上对快照图像执行的注释的注释数据。 注释可以根据注释数据被编码成呈现的实时传输以用注释显示实时传输。
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Patent Agency Ranking
公开(公告)号：US20150124117A1
公开(公告)日：2015-05-07
申请号：US14596589
申请日：2015-01-14
Applicant: Cisco Technology, Inc.
Inventor： Dihong Tian , Wing-Kuen Chung , Qing Chen
IPC: H04N19/593 , H04N5/235 , H04N5/232 , H04N9/73
CPC classification number: H04N19/593 , H04N5/225 , H04N5/228 , H04N5/232 , H04N5/23212 , H04N5/2353 , H04N9/735 , H04N19/159
Abstract: A controller controls a camera that produces a sequence of images and that has output coupled to a video encoder. The camera has an operating condition including a field of view and lighting, and one or more imaging parameters. The video encoder encodes images from the camera into codewords. The controller receives one or more encoding properties from the video encoder, and causes adjusting one or more of the imaging parameters based on at least one of the received encoding properties, such that the camera produces additional images of the sequence of images for the video encoder using the adjusted one or more imaging parameters.
Abstract translation: 控制器控制产生图像序列并具有耦合到视频编码器的输出的相机。 相机具有包括视野和照明的操作条件以及一个或多个成像参数。 视频编码器将来自相机的图像编码成码字。 控制器从视频编码器接收一个或多个编码属性，并且基于所接收的编码属性中的至少一个使得调整一个或多个成像参数，使得相机产生用于视频编码器的图像序列的附加图像 使用经调整的一个或多个成像参数。
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公开(公告)号：US20140253667A1
公开(公告)日：2014-09-11
申请号：US13793524
申请日：2013-03-11
Applicant: CISCO TECHNOLOGY, INC.
Inventor： Dihong Tian
CPC classification number: H04N5/23238 , G06K9/00228 , H04N5/23219 , H04N5/23296 , H04N5/247 , H04N5/2621 , H04N7/15
Abstract: Video content is received at a computing device that camera views provided by video cameras that are aligned to capture images of participants within a defined space. Each camera view is at a first resolution and the video cameras are aligned such that a field of view (FOV) for each camera overlaps a portion of the FOV of at least one other adjacent camera. Positions of participants depicted within the video content are detected, where at least one participant is captured by overlapping FOVs of two adjacent camera views. A target view is generated from the first number of camera views, the target view having a second resolution that is lower than the first resolution, and the target view includes a view of the at least one participant captured within the overlapping FOVs of two adjacent camera views. The target view is displayed at a display device.
Abstract translation: 在计算设备处接收视频内容，该摄像机视图由摄像机提供，其被对齐以捕获在定义的空间内的参与者的图像。 每个摄像机视图处于第一分辨率并且摄像机被对准，使得每个摄像机的视场（FOV）与至少一个其他相邻摄像机的FOV的一部分重叠。 检测到在视频内容内描绘的参与者的位置，其中通过两个相邻摄像机视图的重叠FOV捕获至少一个参与者。 从第一数量的相机视图生成目标视图，目标视图具有低于第一分辨率的第二分辨率，并且目标视图包括在两个相邻相机的重叠FOV内捕获的至少一个参与者的视图 意见 目标视图显示在显示设备上。
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公开(公告)号：US20130136185A1
公开(公告)日：2013-05-30
申请号：US13749588
申请日：2013-01-24
Applicant: CISCO TECHNOLOGY, INC.
Inventor： Dihong Tian , J. William Mauchly , Joseph T. Friel , Wen-hsiung Chen
IPC: H04N7/26
CPC classification number: H04N19/00569 , H04N19/23 , H04N19/50 , H04N19/537 , H04N19/553 , H04N19/573 , H04N19/61
Abstract: A video coder includes a forward coder and a reconstruction module determining a motion compensated predicted picture from one or more previously decoded pictures in a multi-picture store. The reconstruction module includes a reference picture predictor that uses only previously decoded pictures to determine one or more predicted reference pictures. The predicted reference picture(s) are used for motion compensated prediction. The reference picture predictor may include optical flow analysis that uses a current decoded picture and that may use one or more previously decoded pictures together with affine motion analysis and image warping to determine at least a portion of at least one of the reference pictures.
Abstract translation: 视频编码器包括前向编码器和重构模块，其从多图像存储器中的一个或多个先前解码的图像确定运动补偿预测图像。 重建模块包括参考图像预测器，其仅使用先前解码的图像来确定一个或多个预测参考图像。 预测的参考图像用于运动补偿预测。 参考图像预测器可以包括使用当前解码图像的光流分析，并且可以使用一个或多个先前解码的图像以及仿射运动分析和图像扭曲来确定至少一个参考图片的至少一部分。
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16.发明授权公开(公告)号：US09369702B2
公开(公告)日：2016-06-14
申请号：US14185403
申请日：2014-02-20
Applicant: Cisco Technology Inc.
Inventor： Dihong Tian , Wen-hsiung Chen , Pi Sheng Chang
IPC: H04B1/66 , H04J13/00 , H04N19/124 , H04N19/176 , H04N19/196 , H04N19/13 , H04N19/60 , H04N19/167
CPC classification number: H04N19/124 , H04N19/13 , H04N19/167 , H04N19/176 , H04N19/196 , H04N19/60
Abstract: A coding method, apparatus, and medium with software encoded thereon to implement a coding method. The coding method includes encoding the position of non-zero-valued coefficients in an ordered series of quantized transform coefficients of a block of image data, including encoding events using variable length coding using a plurality of variable length code mappings that each maps events to codewords, the position encoding including switching between the code mappings based on the context. The coding method further includes encoding amplitudes of the non-zero-valued coefficients using variable dimensional amplitude coding in the reverse order of the original ordering of the series.
Abstract translation: 一种编码方法，装置和介质，其上编码有软件以实现编码方法。 编码方法包括编码图像数据块的有序序列量化变换系数中的非零值系数的位置，包括使用可变长度编码的编码事件，该多个可变长度编码映射将事件映射到码字 ，位置编码包括基于上下文的代码映射之间的切换。 编码方法还包括使用可变维度幅度编码以与序列的原始顺序相反的顺序来编码非零值系数的幅度。
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公开(公告)号：US20150109402A1
公开(公告)日：2015-04-23
申请号：US14581379
申请日：2014-12-23
Applicant: Cisco Technology, Inc.
Inventor： Dihong Tian
CPC classification number: H04N5/23238 , G06K9/00228 , H04N5/23219 , H04N5/23296 , H04N5/247 , H04N5/2621 , H04N7/15
Abstract: Video content is received at a computing device including camera views provided by video cameras that are aligned to capture images of participants within a defined space. The video cameras are aligned such that a field of view (FOV) for each camera overlaps a portion of the FOV of at least one other adjacent camera. Positions of participants depicted within the video content are detected, where target views are generated to combine as a continuous view of the video content that includes the plurality of detected participants. The target views are displayed at display devices.
Abstract translation: 在计算设备处接收视频内容，包括由摄像机提供的摄像机视图，其被对齐以捕获在定义的空间内的参与者的图像。 视频摄像机对准，使得每个摄像机的视场（FOV）与至少一个其他相邻摄像机的FOV的一部分重叠。 检测在视频内容内描绘的参与者的位置，其中生成目标视图以组合为包括多个检测到的参与者的视频内容的连续视图。 目标视图显示在显示设备上。
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