专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20080112315A1 PEER-TO-PEER AIDED LIVE VIDEO SHARING SYSTEM 有权
标题翻译：同行对讲直播视频共享系统
公开(公告)号：US20080112315A1
公开(公告)日：2008-05-15
申请号：US11558878
申请日：2006-11-10
申请人： Yusuo Hu , Chong Luo , Jian Tang , Jian-Guang Lou , Hua Cai , Jiang Li
发明人： Yusuo Hu , Chong Luo , Jian Tang , Jian-Guang Lou , Hua Cai , Jiang Li
IPC分类号： G08C15/00
CPC分类号： H04N21/2743 , H04L67/104 , H04L67/1072 , H04L67/1085 , H04N7/17318 , H04N21/21 , H04N21/23 , H04N21/4788 , H04N21/632
摘要： Video data from an upload client is received at a hosting node. A request from a download client is received at a bootstrapping node to receive the video data. The download client to receive the video data directly from the hosting node when the hosting node is below a threshold, wherein the threshold is based at least in part on the maximum number of download clients the hosting node can stream to simultaneously. The download client to receive the video data from peers in a peer-to-peer overlay when the hosting node above the threshold.
摘要翻译：在主机节点接收来自上传客户端的视频数据。在自举节点处接收来自下载客户端的请求以接收视频数据。所述下载客户端在所述主机节点低于阈值时直接从所述主机节点接收所述视频数据，其中所述阈值至少部分地基于所述主机节点可以同时流式传输的下载客户端的最大数目。当主机节点高于阈值时，下载客户端从点对点覆盖中的对等端接收视频数据。

2. 发明授权

US07733808B2 Peer-to-peer aided live video sharing system 有权
标题翻译：点对点辅助实时视频共享系统
公开(公告)号：US07733808B2
公开(公告)日：2010-06-08
申请号：US11558878
申请日：2006-11-10
申请人： Yusuo Hu , Chong Luo , Jian Tang , Jian-Guang Lou , Hua Cai , Jiang Li
发明人： Yusuo Hu , Chong Luo , Jian Tang , Jian-Guang Lou , Hua Cai , Jiang Li
IPC分类号： G06F11/00 , H04L12/56 , H04N7/16
CPC分类号： H04N21/2743 , H04L67/104 , H04L67/1072 , H04L67/1085 , H04N7/17318 , H04N21/21 , H04N21/23 , H04N21/4788 , H04N21/632
摘要： Video data from an upload client is received at a hosting node. A request from a download client is received at a bootstrapping node to receive the video data. The download client to receive the video data directly from the hosting node when the hosting node is below a threshold, wherein the threshold is based at least in part on the maximum number of download clients the hosting node can stream to simultaneously. The download client to receive the video data from peers in a peer-to-peer overlay when the hosting node above the threshold.
摘要翻译：在主机节点接收来自上传客户端的视频数据。在自举节点处接收来自下载客户端的请求以接收视频数据。所述下载客户端在所述主机节点低于阈值时直接从所述主机节点接收所述视频数据，其中所述阈值至少部分地基于所述主机节点可以同时流式传输的下载客户端的最大数目。当主机节点高于阈值时，下载客户端从点对点覆盖中的对等端接收视频数据。

3. 发明申请

US20080172384A1 Epipolar geometry-based motion estimation for multi-view image and video coding 有权
标题翻译：用于多视图图像和视频编码的基于双极几何的运动估计
公开(公告)号：US20080172384A1
公开(公告)日：2008-07-17
申请号：US11653587
申请日：2007-01-16
申请人： Hua Cai , Jian-guang Lou , Jiang Li
发明人： Hua Cai , Jian-guang Lou , Jiang Li
IPC分类号： G06F7/10 , G06F7/38 , G06F15/00 , G06F17/30
CPC分类号： G06T7/292 , G06T7/238 , G06T2207/10016 , G06T2207/20088
摘要： Described is fast motion estimation based upon epipolar geometry, which can be used in compressing multi-view video. An epipolar line is computed based on a point (e.g., a centroid point) in a macroblock to be predicted, and a temporary starting point in an image is determined, such as a median predicted search center. A search starting point is further determined based on the temporary starting point and the epipolar line, e.g., a point on the epipolar line corresponding to an intersecting line that is projected orthogonally from the temporary point to the epipolar line. A motion estimation mechanism searches the search space to produce a motion vector. The search may be conducted starting at the search starting point in a reduced search area located around the epipolar line, e.g., a local diamond search and/or rotated unsymmetrical rood-pattern search.
摘要翻译：描述了基于对极几何的快速运动估计，可用于压缩多视图视频。基于要预测的宏块中的点（例如，质心点）计算核线，并且确定图像中的临时起始点，诸如中值预测搜索中心。基于临时起点和核线，进一步确定搜索起始点，例如对应于从临时点到对极线正交投影的相交线的对极线上的点。运动估计机制搜索搜索空间以产生运动矢量。搜索可以在位于核线附近的缩小搜索区域的搜索起点开始进行，例如本地菱形搜索和/或旋转的不对称轮廓图案搜索。

4. 发明申请

US20070103558A1 Multi-view video delivery 审中-公开
标题翻译：多视图视频传送
公开(公告)号：US20070103558A1
公开(公告)日：2007-05-10
申请号：US11267768
申请日：2005-11-04
申请人： Hua Cai , Jian-Guang Lou , Jiang Li
发明人： Hua Cai , Jian-Guang Lou , Jiang Li
IPC分类号： H04N5/232 , G06F3/00 , G06F13/00 , H04N5/45 , H04N5/445
CPC分类号： H04N5/222 , H04N5/144 , H04N5/20 , H04N5/2627 , H04N21/21805 , H04N21/2668
摘要： The present example provides a system for delivering video streams with multi-view effects. Single-view video streams, each associated with a particular view, are provided by a server. A client may select to receive any of the single-view video streams. The server is further configured to generate a multi-view video stream from frames in the single-view video streams. The multi-view video stream may include visual effects and may be provided to the client to enhance the user experience. The visual effects may include frozen moment and view sweeping.
摘要翻译：本示例提供了一种用于传送具有多视图效果的视频流的系统。每个与特定视图相关联的单视图视频流由服务器提供。客户端可以选择接收任何单视图视频流。服务器还被配置为从单视图视频流中的帧生成多视点视频流。多视点视频流可以包括视觉效果，并且可以提供给客户端以增强用户体验。视觉效果可能包括冻结时刻和扫视。

5. 发明授权

US08953684B2 Multiview coding with geometry-based disparity prediction 有权
标题翻译：基于几何视差预测的多视图编码
公开(公告)号：US08953684B2
公开(公告)日：2015-02-10
申请号：US11803972
申请日：2007-05-16
申请人： Hua Cai , Jian-Guang Lou , Jiang Li
发明人： Hua Cai , Jian-Guang Lou , Jiang Li
IPC分类号： H04N11/04 , H04N19/61 , H04N19/597
CPC分类号： H04N19/61 , H04N19/597
摘要： Described herein is technology for, among other things, multiview coding with geometry-based disparity prediction. The geometry-based disparity prediction involves determining corresponding block pairs in a number of reconstructed images for an image being coded. The reconstructed images and the image represent different views of a scene at a point in time. Each corresponding block pair is projected on the image. This enables determination of disparity vector candidates. For each coding block of the image, a predicted disparity vector is determined based on the disparity vector candidates. Then, the predicted disparity vector may be utilized to obtain the bits to be encoded. The geometry-based disparity prediction reduces the number of encoded bits.
摘要翻译：这里描述的是用于基于几何视差预测的多视图编码技术。基于几何的视差预测涉及确定针对被编码的图像的多个重建图像中的相应块对。重建的图像和图像表示在某个时间点的场景的不同视图。每个对应的块对投影在图像上。这使得能够确定视差向量候选。对于图像的每个编码块，基于视差向量候选来确定预测的视差矢量。然后，可以使用预测的视差矢量来获得要编码的比特。基于几何的视差预测减少了编码比特的数量。

6. 发明申请

US20080285654A1 Multiview coding with geometry-based disparity prediction 有权
标题翻译：基于几何视差预测的多视图编码
公开(公告)号：US20080285654A1
公开(公告)日：2008-11-20
申请号：US11803972
申请日：2007-05-16
申请人： Hua Cai , Jian-Guang Lou , Jiang Li
发明人： Hua Cai , Jian-Guang Lou , Jiang Li
IPC分类号： H04B1/66
CPC分类号： H04N19/61 , H04N19/597
摘要： Described herein is technology for, among other things, multiview coding with geometry-based disparity prediction. The geometry-based disparity prediction involves determining corresponding block pairs in a number of reconstructed images for an image being coded. The reconstructed images and the image represent different views of a scene at a point in time. Each corresponding block pair is projected on the image. This enables determination of disparity vector candidates. For each coding block of the image, a predicted disparity vector is determined based on the disparity vector candidates. Then, the predicted disparity vector may be utilized to obtain the bits to be encoded. The geometry-based disparity prediction reduces the number of encoded bits.
摘要翻译：这里描述的是用于基于几何视差预测的多视图编码技术。基于几何的视差预测涉及确定针对被编码的图像的多个重建图像中的相应块对。重建的图像和图像表示在某个时间点的场景的不同视图。每个对应的块对投影在图像上。这使得能够确定视差向量候选。对于图像的每个编码块，基于视差向量候选来确定预测的视差矢量。然后，可以使用预测的视差矢量来获得要编码的比特。基于几何的视差预测减少了编码比特的数量。

7. 发明授权

US08116235B2 Peer-to-peer aided live video sharing system 有权
标题翻译：点对点辅助实时视频共享系统
公开(公告)号：US08116235B2
公开(公告)日：2012-02-14
申请号：US12794639
申请日：2010-06-04
申请人： Yusuo Hu , Chong Luo , Jian Tang , Jian-Guang Lou , Hua Cai , Jiang Li
发明人： Yusuo Hu , Chong Luo , Jian Tang , Jian-Guang Lou , Hua Cai , Jiang Li
IPC分类号： H04L12/28 , G06F11/00 , H04N7/16
CPC分类号： H04N21/2743 , H04L67/104 , H04L67/1072 , H04L67/1085 , H04N7/17318 , H04N21/21 , H04N21/23 , H04N21/4788 , H04N21/632
摘要： Video data from an upload client is received at a hosting node. A request from a download client is received at a bootstrapping node to receive the video data. The download client to receive the video data directly from the hosting node when the hosting node is below a threshold, wherein the threshold is based at least in part on the maximum number of download clients the hosting node can stream to simultaneously. The download client to receive the video data from peers in a peer-to-peer overlay when the hosting node above the threshold.
摘要翻译：在主机节点接收来自上传客户端的视频数据。在自举节点处接收来自下载客户端的请求以接收视频数据。所述下载客户端在所述主机节点低于阈值时直接从所述主机节点接收所述视频数据，其中所述阈值至少部分地基于所述主机节点可以同时流式传输的下载客户端的最大数目。当主机节点高于阈值时，下载客户端从点对点覆盖中的对等端接收视频数据。

8. 发明授权

US07822280B2 Epipolar geometry-based motion estimation for multi-view image and video coding 有权
标题翻译：用于多视图图像和视频编码的基于双极几何的运动估计
公开(公告)号：US07822280B2
公开(公告)日：2010-10-26
申请号：US11653587
申请日：2007-01-16
申请人： Hua Cai , Jian-guang Lou , Jiang Li
发明人： Hua Cai , Jian-guang Lou , Jiang Li
IPC分类号： G06K9/46 , G06K9/00 , H04N11/02
CPC分类号： G06T7/292 , G06T7/238 , G06T2207/10016 , G06T2207/20088
摘要： Described is fast motion estimation based upon epipolar geometry, which can be used in compressing multi-view video. An epipolar line is computed based on a point (e.g., a centroid point) in a macroblock to be predicted, and a temporary starting point in an image is determined, such as a median predicted search center. A search starting point is further determined based on the temporary starting point and the epipolar line, e.g., a point on the epipolar line corresponding to an intersecting line that is projected orthogonally from the temporary point to the epipolar line. A motion estimation mechanism searches the search space to produce a motion vector. The search may be conducted starting at the search starting point in a reduced search area located around the epipolar line, e.g., a local diamond search and/or rotated unsymmetrical rood-pattern search.
摘要翻译：描述了基于对极几何的快速运动估计，可用于压缩多视图视频。基于要预测的宏块中的点（例如，质心点）计算核线，并且确定图像中的临时起始点，诸如中值预测搜索中心。基于临时起点和核线，进一步确定搜索起始点，例如对应于从临时点到对极线正交投影的相交线的对极线上的点。运动估计机制搜索搜索空间以产生运动矢量。搜索可以在位于核线附近的缩小搜索区域的搜索起点开始进行，例如本地菱形搜索和/或旋转的不对称轮廓图案搜索。

9. 发明授权

US07903894B2 Color image coding using inter-color correlation 失效
标题翻译：彩色图像编码采用色间相关
公开(公告)号：US07903894B2
公开(公告)日：2011-03-08
申请号：US11543576
申请日：2006-10-05
申请人： Hua Cai , Jiang Li
发明人： Hua Cai , Jiang Li
IPC分类号： G06K9/46
CPC分类号： H04N19/182 , H04N19/13 , H04N19/136 , H04N19/186 , H04N19/593
摘要： Described is an image compression technology by which a coefficient representative of a chrominance component corresponding to an (x, y) coordinate pair is coded into a symbol, along with plurality of context events associated with that symbol, to facilitate more efficient context-based arithmetic coding. For example, four context events may be generated, including one context event based on the corresponding (x, y) coefficient value in the luminance component, and three context events based on other luminance coefficients that have adjacent horizontal, vertical and diagonal relationships with the corresponding luminance component's coefficient, respectively. In one example implementation, coding the chrominance coefficient and computing the plurality of context events occurs in a zero coding pass of an entropy coder. A sign coding pass and a magnitude refinement pass may be performed to obtain further symbols for the context-based arithmetic coding.
摘要翻译：描述了一种图像压缩技术，通过该技术，表示对应于（x，y）坐标对的色度分量的系数与多个与该符号相关联的上下文事件一起编码为符号，以促进更有效的基于上下文的算术编码。例如，可以生成四个上下文事件，包括基于亮度分量中的对应（x，y）系数值的一个上下文事件，以及基于与其相关的其他亮度系数的三个上下文事件，这些亮度系数与分别对应亮度分量系数。在一个示例实现中，对色度系数进行编码并计算多个上下文事件发生在熵编码器的零编码遍中。可以执行符号编码遍和幅度细化遍以获得用于基于上下文的算术编码的另外的符号。

10. 发明申请

US20070279265A1 Image Coding with Scalable Context Quantization 有权
标题翻译：图像编码与可扩展上下文量化
公开(公告)号：US20070279265A1
公开(公告)日：2007-12-06
申请号：US11771030
申请日：2007-06-29
申请人： Hua Cai , Jiang Li
发明人： Hua Cai , Jiang Li
IPC分类号： H03M7/00
CPC分类号： H04N19/126 , H04N19/146 , H04N19/593 , H04N19/647
摘要： A scalable quantizer is generated from a plurality of context models for each of a plurality of bit rates used in coding a source. A context model for a lower bit rate quantizes conditioning states when there is no compression gain in coding the image using child conditioning states in the higher bit rate context model over a parent conditioning state to which they may be quantized. The scalable quantizer includes a basic context model for a lowest anticipated bit rate and enhancement bits indicating how to adapt the basic context model to derive context models for higher bit rates. For image data transformed with embedded wavelet coding, context events are selected from corresponding or neighboring pixels at different resolutions and in different bit planes, and the order of the context events is optimized to reduce conditional entropy between the context events and the current value.
摘要翻译：对于用于编码源的多个比特率中的每一个，从多个上下文模型生成可扩展量化器。当在较高比特率上下文模型中使用子调理状态在其可被量化的父条件状态下，当在图像编码中没有压缩增益时，较低比特率的上下文模型量化调节状态。可扩展量化器包括用于最低预期比特率的基本上下文模型和指示如何使基本上下文模型适应以导出更高比特率的上下文模型的增强比特。对于使用嵌入式小波编码变换的图像数据，从不同分辨率和不同位平面中的相应或相邻像素选择上下文事件，并优化上下文事件的顺序以减少上下文事件与当前值之间的条件熵。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式