公开(公告)号：US06567081B1

公开(公告)日：2003-05-20

申请号：US09598189

申请日：2000-06-20

申请人： Jin Li ,  Ya-Qin Zhang ,  Yunnan Wu ,  Lin Luo

发明人： Jin Li ,  Ya-Qin Zhang ,  Yunnan Wu ,  Lin Luo

IPC分类号： G06T1700

CPC分类号： G06T9/007

摘要： Methods and arrangement are provided for compressing and transporting image-based rendering (IBR) data using alignment and three-dimensional (3D) wavelet transform techniques, and selectively decompressing portions of the resulting compressed data to render various two-dimensional (2D) views of a 3D scene. A compression engine compresses the IBR data using a 3D wavelet transform and outputs a compressed bitstream comprising encoded frequency coefficients associated with the IBR data. This compressed bitstream can then be provided to a separate decompression engine that selectively decodes portions of the compressed bitstream based on an access request for image data associated with a desired view from a rendering engine. Through a mixed cache, the progressive inverse wavelet synthesis (PIWS) engine decompresses the decoded portions with minimum calculation, and provides the decompressed IBR data to the rendering engine. The rendering engine is therefore able to render the decompressed IBR data without having to have the entire IBR bitstream decoded and decompressed at any one time.

摘要翻译： 提供了使用对准和三维（3D）小波变换技术来压缩和传送基于图像的渲染（IBR）数据的方法和布置，并且选择性地解压缩所得到的压缩数据的部分以呈现各种二维（2D）视图 一个3D场景。 压缩引擎使用3D小波变换来压缩IBR数据，并且输出包含与IBR数据相关联的编码频率系数的压缩比特流。 然后，可以将该压缩比特流提供给单独的解压缩引擎，该解压缩引擎基于对来自呈现引擎的期望视图相关联的图像数据的访问请求来选择性地解码压缩比特流的部分。 通过混合高速缓存，逐行逆小波合成（PIWS）引擎以最小的计算解压缩解码部分，并将解压后的IBR数据提供给渲染引擎。 因此，渲染引擎能够呈现解压缩的IBR数据，而不必在任何一个时间都对整个IBR比特流进行解码和解压缩。

公开(公告)号：US07110617B2

公开(公告)日：2006-09-19

申请号：US10967472

申请日：2004-10-18

申请人： Cha Zhang ,  Jin Li ,  Yunnan Wu

发明人： Cha Zhang ,  Jin Li ,  Yunnan Wu

IPC分类号： G06K9/36

CPC分类号： H04N19/597 ,  H04N19/13 ,  H04N19/61 ,  H04N19/615 ,  H04N19/619 ,  H04N19/63

摘要： Rebinning methods and arrangements are provided that significantly improve the 3D wavelet compression performance of the image based rendering data, such as, e.g., concentric mosaic image data. Through what is essentially a selective cutting and pasting process the image data is divided into stripes that are then used to form a set of multi-perspective panoramas. The rebinning process greatly improves the performance of the cross shot filtering, and thus improves the transform and coding efficiency of 3D wavelet codecs. While the region of support after rebinning may cease to be rectangular in some cases, a padding scheme and an arbitrary shape wavelet coder can be implemented to encode the result data volume of the smart rebinning. With an arbitrary shape wavelet codec, the rebinning outperforms MPEG-2 by 3.7 dB, outperforms direct 3D wavelet coder by 4.3 dB, and outperforms a reference block coder (RBC) by 3.2 dB on certain tested concentric mosaic image scenes. Hence, the rebinning process nearly quadruples the compression ratio for selected scenes. Additional methods and arrangements are provided that include selectively dividing the image data into slits and rebinning the slits into a huge 2D array, which is then compressed using conventional still image codecs, such as, JPEG.

摘要翻译： 提供了重新组合的方法和布置，其显着地改善了基于图像的渲染数据（例如同心马赛克图像数据）的3D小波压缩性能。 通过本质上选择性的切割和粘贴过程，图像数据被分成条纹，然后用于形成一组多视角全景。 重组过程大大提高了交叉滤波的性能，从而提高了3D小波编解码器的变换和编码效率。 虽然重组后的支持区域在某些情况下可能不再是矩形，但是可以实现填充方案和任意形状的小波编码器来对智能重新归类的结果数据量进行编码。 使用任意形状的小波编解码器，重新排序的MPEG-2优于3.7 dB，优于直接3D小波编码器4.3 dB，在某些测试的同心马赛克图像场景上优于参考块编码器（RBC）3.2 dB。 因此，重新组合过程几乎是所选场景的压缩比的四倍。 提供了附加的方法和布置，其包括选择性地将图像数据划分成狭缝并将狭缝重新划分成巨大的2D阵列，然后使用诸如JPEG的常规静止图像编解码器进行压缩。

公开(公告)号：US08824470B2

公开(公告)日：2014-09-02

申请号：US12791893

申请日：2010-06-02

申请人： Yunnan Wu ,  Yao Zhao ,  Baochun Li ,  Minghua Chen ,  Jin Li ,  Philip A. Chou

发明人： Yunnan Wu ,  Yao Zhao ,  Baochun Li ,  Minghua Chen ,  Jin Li ,  Philip A. Chou

IPC分类号： H04L12/70 ,  H04L12/18 ,  H04L1/00 ,  H04L12/56 ,  H04B7/155

CPC分类号： H04L12/1822 ,  H04B7/15521 ,  H04L1/0076 ,  H04L12/1863 ,  H04L45/48 ,  H04L47/12 ,  H04L47/15 ,  H04L47/193 ,  H04L47/27 ,  H04L47/38

摘要： Described is a distributed peer-assisted multicast content delivery system (e.g., a multiparty conferencing application) that uses an adaptive link rate control protocol to discover and adapt to an arbitrary topology quickly and converge to efficient link rate allocations allowed by an underlying network. Link rates are regularly obtained and used to determine trees for sending packets to other nodes. Network coding is used to implement data multicast so that mixtures (i.e., linear combinations) of the packets are transmitted in the network. The redundant packets may be differentiated from non-redundant (“innovative”) packets such that network conditions may be measured by link innovation and/or session innovation.

摘要翻译： 描述了使用自适应链路速率控制协议快速发现和适应任意拓扑并且收敛到底层网络允许的有效链路速率分配的分布式对等辅助多播内容传送系统（例如，多方会议应用）。 定期获取链路速率并用于确定用于向其他节点发送数据包的树。 网络编码用于实现数据多播，使得分组的混合（即线性组合）在网络中传输。 冗余分组可以与非冗余（“创新”）分组区分开，从而可以通过链路创新和/或会话创新来测量网络状况。

公开(公告)号：US20110299526A1

公开(公告)日：2011-12-08

申请号：US12791893

申请日：2010-06-02

申请人： Yunnan Wu ,  Yao Zhao ,  Baochun Li ,  Minghua Chen ,  Jin Li ,  Philip A. Chou

发明人： Yunnan Wu ,  Yao Zhao ,  Baochun Li ,  Minghua Chen ,  Jin Li ,  Philip A. Chou

IPC分类号： H04L12/56

CPC分类号： H04L12/1822 ,  H04B7/15521 ,  H04L1/0076 ,  H04L12/1863 ,  H04L45/48 ,  H04L47/12 ,  H04L47/15 ,  H04L47/193 ,  H04L47/27 ,  H04L47/38

摘要： Described is a distributed peer-assisted multicast content delivery system (e.g., a multiparty conferencing application) that uses an adaptive link rate control protocol to discover and adapt to an arbitrary topology quickly and converge to efficient link rate allocations allowed by an underlying network. Link rates are regularly obtained and used to determine trees for sending packets to other nodes. Network coding is used to implement data multicast so that mixtures (i.e., linear combinations) of the packets are transmitted in the network. The redundant packets may be differentiated from non-redundant (“innovative”) packets such that network conditions may be measured by link innovation and/or session innovation.

摘要翻译： 描述了使用自适应链路速率控制协议快速发现和适应任意拓扑并且收敛到底层网络允许的有效链路速率分配的分布式对等辅助多播内容传送系统（例如，多方会议应用）。 定期获取链路速率并用于确定用于向其他节点发送数据包的树。 网络编码用于实现数据多播，使得分组的混合（即线性组合）在网络中传输。 冗余分组可以与非冗余（“创新”）分组区分开，从而可以通过链路创新和/或会话创新来测量网络状况。

公开(公告)号：US20080005188A1

公开(公告)日：2008-01-03

申请号：US11428270

申请日：2006-06-30

申请人： Jin Li ,  Dan Teodosiu ,  Philip A. Chou ,  Cheng Huang ,  Eyal Schwartz ,  John T. Spivey ,  Yunnan Wu ,  Alexandra K. Heron

发明人： Jin Li ,  Dan Teodosiu ,  Philip A. Chou ,  Cheng Huang ,  Eyal Schwartz ,  John T. Spivey ,  Yunnan Wu ,  Alexandra K. Heron

IPC分类号： G06F17/30

CPC分类号： G06F17/30165 ,  G06F17/30174 ,  G06F17/30206

摘要： Content synchronization in a file sharing environment is described. A node in a circle share maintains a version vector that represents that node's knowledge of file synchronization events. Version vector data may be transmitted between nodes of the circle share via a presence service in the form of short notification messages. The version vector data is compared to identify one or more nodes to be synchronized. A resource-aware overlay representing the circle share is computed, and is used to initiate communication to determine which of the available nodes with which to synchronize will provide the most synchronization value to other nodes in the circle share.

摘要翻译： 描述文件共享环境中的内容同步。 圆形共享中的节点维护一个版本向量，表示该节点对文件同步事件的了解。 版本矢量数据可以通过存在服务以短通知消息的形式在圆圈的节点之间传送。 将版本矢量数据进行比较，以识别要同步的一个或多个节点。 计算表示圆圈共享的资源感知覆盖，并且用于发起通信以确定哪个与其同步的可用节点将与圆共享中的其他节点提供最大的同步值。

公开(公告)号：US20050078876A1

公开(公告)日：2005-04-14

申请号：US10967604

申请日：2004-10-18

申请人： Cha Zhang ,  Jin Li ,  Yunnan Wu

发明人： Cha Zhang ,  Jin Li ,  Yunnan Wu

IPC分类号： G06K9/36 ,  G06K9/46 ,  G06T15/00

CPC分类号： H04N19/597 ,  H04N19/13 ,  H04N19/61 ,  H04N19/615 ,  H04N19/619 ,  H04N19/63

摘要： Rebinning methods and arrangements are provided that significantly improve the 3D wavelet compression performance of the image based rendering data, such as, e.g., concentric mosaic image data. Through what is essentially a selective cutting and pasting process the image data is divided into stripes that are then used to form a set of multi-perspective panoramas. The rebinning process greatly improves the performance of the cross shot filtering, and thus improves the transform and coding efficiency of 3D wavelet codecs. While the region of support after rebinning may cease to be rectangular in some cases, a padding scheme and an arbitrary shape wavelet coder can be implemented to encode the result data volume of the smart rebinning. With an arbitrary shape wavelet codec, the rebinning outperforms MPEG-2 by 3.7 dB, outperforms direct 3D wavelet coder by 4.3 dB, and outperforms a reference block coder (RBC) by 3.2 dB on certain tested concentric mosaic image scenes. Hence, the rebinning process nearly quadruples the compression ratio for selected scenes. Additional methods and arrangements are provided that include selectively dividing the image data into slits and rebinning the slits into a huge 2D array, which is then compressed using conventional still image codecs, such as, JPEG.

公开(公告)号：US20050031214A1

公开(公告)日：2005-02-10

申请号：US10937520

申请日：2004-09-09

申请人： Cha Zhang ,  Jin Li ,  Yunnan Wu

发明人： Cha Zhang ,  Jin Li ,  Yunnan Wu

IPC分类号： G06K9/36 ,  G06K9/46 ,  G06T15/00

CPC分类号： H04N19/597 ,  H04N19/13 ,  H04N19/61 ,  H04N19/615 ,  H04N19/619 ,  H04N19/63

摘要： Rebinning methods and arrangements are provided that significantly improve the 3D wavelet compression performance of the image based rendering data, such as, e.g., concentric mosaic image data. Through what is essentially a selective cutting and pasting process the image data is divided into stripes that are then used to form a set of multi-perspective panoramas. The rebinning process greatly improves the performance of the cross shot filtering, and thus improves the transform and coding efficiency of 3D wavelet codecs. While the region of support after rebinning may cease to be rectangular in some cases, a padding scheme and an arbitrary shape wavelet coder can be implemented to encode the result data volume of the smart rebinning. With an arbitrary shape wavelet codec, the rebinning outperforms MPEG-2 by 3.7 dB, outperforms direct 3D wavelet coder by 4.3 dB, and outperforms a reference block coder (RBC) by 3.2 dB on certain tested concentric mosaic image scenes. Hence, the rebinning process nearly quadruples the compression ratio for selected scenes. Additional methods and arrangements are provided that include selectively dividing the image data into slits and rebinning the slits into a huge 2D array, which is then compressed using conventional still image codecs, such as, JPEG.

公开(公告)号：US07953785B2

公开(公告)日：2011-05-31

申请号：US11428270

申请日：2006-06-30

申请人： Jin Li ,  Dan Teodosiu ,  Philip A. Chou ,  Cheng Huang ,  Eyal Schwartz ,  John T. Spivey ,  Yunnan Wu ,  Alexandra K. Heron

发明人： Jin Li ,  Dan Teodosiu ,  Philip A. Chou ,  Cheng Huang ,  Eyal Schwartz ,  John T. Spivey ,  Yunnan Wu ,  Alexandra K. Heron

IPC分类号： G06F15/16

CPC分类号： G06F17/30165 ,  G06F17/30174 ,  G06F17/30206

摘要： Content synchronization in a file sharing environment is described. A node in a circle share maintains a version vector that represents that node's knowledge of file synchronization events. Version vector data may be transmitted between nodes of the circle share via a presence service in the form of short notification messages. The version vector data is compared to identify one or more nodes to be synchronized. A resource-aware overlay representing the circle share is computed, and is used to initiate communication to determine which of the available nodes with which to synchronize will provide the most synchronization value to other nodes in the circle share.

摘要翻译： 描述文件共享环境中的内容同步。 圆形共享中的节点维护一个版本向量，表示该节点对文件同步事件的了解。 版本矢量数据可以通过存在服务以短通知消息的形式在圆圈的节点之间传送。 将版本矢量数据进行比较，以识别要同步的一个或多个节点。 计算表示圆圈共享的资源感知覆盖，并且用于发起通信以确定哪个与其同步的可用节点将与圆共享中的其他节点提供最大的同步值。

公开(公告)号：US06996294B2

公开(公告)日：2006-02-07

申请号：US10967604

申请日：2004-10-18

申请人： Cha Zhang ,  Jin Li ,  Yunnan Wu

发明人： Cha Zhang ,  Jin Li ,  Yunnan Wu

IPC分类号： G06K9/36

CPC分类号： H04N19/597 ,  H04N19/13 ,  H04N19/61 ,  H04N19/615 ,  H04N19/619 ,  H04N19/63

摘要： Rebinning methods and arrangements are provided that significantly improve the 3D wavelet compression performance of the image based rendering data, such as, e.g., concentric mosaic image data. Through what is essentially a selective cutting and pasting process the image data is divided into stripes that are then used to form a set of multi-perspective panoramas. The rebinning process greatly improves the performance of the cross shot filtering, and thus improves the transform and coding efficiency of 3D wavelet codecs. While the region of support after rebinning may cease to be rectangular in some cases, a padding scheme and an arbitrary shape wavelet coder can be implemented to encode the result data volume of the smart rebinning. With an arbitrary shape wavelet codec, the rebinning outperforms MPEG-2 by 3.7 dB, outperforms direct 3D wavelet coder by 4.3 dB, and outperforms a reference block coder (RBC) by 3.2 dB on certain tested concentric mosaic image scenes. Hence, the rebinning process nearly quadruples the compression ratio for selected scenes. Additional methods and arrangements are provided that include selectively dividing the image data into slits and rebinning the slits into a huge 2D array, which is then compressed using conventional still image codecs, such as, JPEG.

公开(公告)号：US20050078875A1

公开(公告)日：2005-04-14

申请号：US10967472

申请日：2004-10-18

申请人： Cha Zhang ,  Jin Li ,  Yunnan Wu

发明人： Cha Zhang ,  Jin Li ,  Yunnan Wu

IPC分类号： G06K9/36 ,  G06K9/46 ,  G06T15/00

CPC分类号： H04N19/597 ,  H04N19/13 ,  H04N19/61 ,  H04N19/615 ,  H04N19/619 ,  H04N19/63

摘要： Rebinning methods and arrangements are provided that significantly improve the 3D wavelet compression performance of the image based rendering data, such as, e.g., concentric mosaic image data. Through what is essentially a selective cutting and pasting process the image data is divided into stripes that are then used to form a set of multi-perspective panoramas. The rebinning process greatly improves the performance of the cross shot filtering, and thus improves the transform and coding efficiency of 3D wavelet codecs. While the region of support after rebinning may cease to be rectangular in some cases, a padding scheme and an arbitrary shape wavelet coder can be implemented to encode the result data volume of the smart rebinning. With an arbitrary shape wavelet codec, the rebinning outperforms MPEG-2 by 3.7 dB, outperforms direct 3D wavelet coder by 4.3 dB, and outperforms a reference block coder (RBC) by 3.2 dB on certain tested concentric mosaic image scenes. Hence, the rebinning process nearly quadruples the compression ratio for selected scenes. Additional methods and arrangements are provided that include selectively dividing the image data into slits and rebinning the slits into a huge 2D array, which is then compressed using conventional still image codecs, such as, JPEG.