-
1.发明授权公开(公告)号：US07006567B2
公开(公告)日：2006-02-28
申请号：US10092267
申请日：2002-03-06
IPC分类号： H04N7/12
CPC分类号： H04N19/649 , H04N19/62 , H04N19/97
摘要： An apparatus and method to represent a video signal for improved source quality versus decoding complexity for a given compression rate and improved resistance against data loss when delivered over an error-prone network. The method comprises a 3-D matching pursuit algorithm with an improved 3-D dictionary. The 3-D MP encoder transforms blocks of frames into a set of spatio-temporal functions from the improved dictionary. The 3-D coder outputs a video stream that is highly resistant to data loss. Also, the proposed dictionary is optimized for source quality versus decoding complexity for a given compression rate.
-
公开(公告)号：US06628300B2
公开(公告)日：2003-09-30
申请号：US10092247
申请日：2002-03-06
IPC分类号： G09G500
CPC分类号： H04N19/115 , H04N19/156 , H04N19/164 , H04N19/40 , H04N19/97 , H04N21/2343 , H04N21/234309 , H04N21/23439 , H04N21/25833 , H04N21/25858 , H04N21/2662 , Y10S707/99945 , Y10S707/99948
摘要： An apparatus, a method and a system to efficiently manipulate in the compressed domain, spatial and/or temporal scaling of matching pursuit-coded digital signals. These manipulations, referred to as transcoding, may take place at a transcoding proxy located at an origin server, in any intermediary along the transmission path from the origin server to the client device, and/or at the client device. The preferred embodiment focuses on a method to perform rate adaptation and spatio-temporal scaling of a video stream composed of 3-D atoms in order to serve a set of heterogeneous client devices (e.g., a high-end personal computer, a personal digital assistant and a wireless phone). The proposed method applies to 1-D atoms (decomposition of audio signals) and 2-D atoms (image decomposition).
摘要翻译： 一种用于在压缩域中有效地操纵匹配追踪码数字信号的空间和/或时间缩放的装置，方法和系统。 称为代码转换的这些操作可以在位于原始服务器的代码转换代理处，沿着从原始服务器到客户端设备和/或在客户端设备的传输路径的任何中介中进行。 优选实施例着重于对由3-D原子组成的视频流执行速率适配和时空缩放以便服务于一组异构客户端设备（例如，高端个人计算机，个人数字助理 和无线电话）。 所提出的方法适用于1-D原子（音频信号的分解）和2-D原子（图像分解）。
-
3.发明授权Methods and apparatus for secure and adaptive delivery of multimedia content 有权用于安全和自适应地传送多媒体内容的方法和装置公开(公告)号：US07313236B2
公开(公告)日：2007-12-25
申请号：US10410455
申请日：2003-04-09
IPC分类号： H04L9/00
CPC分类号： H04L65/602 , H04L29/06027 , H04L65/607
摘要： Techniques for securely and adaptively delivering multimedia content. It is assumed that a set of alternate access units for each time slot is obtained. Then, the encryption stream index of each access unit from the set of alternate access units of the previous time slot are obtained. An encryption stream index is then assigned to each access unit in the set of alternate access units in the current time slot, such that the encryption index increases over time. Thus, the invention overcomes the problem of encrypting a multimedia stream that may have multiple access units for each time slot by selecting the encryption index for each access unit such that the encryption index increases, regardless of which access unit the delivery system (e.g., server) selects for transmission.
摘要翻译： 安全和自适应地传送多媒体内容的技术。 假设获得了用于每个时隙的一组备用存取单元。 然后，获得来自前一时隙的一组备用访问单元的每个访问单元的加密流索引。 然后，将加密流索引分配给当前时隙中的备用访问单元集合中的每个访问单元，使得加密索引随时间增加。 因此，本发明克服了通过选择每个接入单元的加密索引来加密每个时隙可能具有多个接入单元的多媒体流的问题，使得加密索引增加，而不考虑哪个接入单元的传送系统（例如，服务器 ）选择进行传输。
-
4.发明授权Methods and apparatus for multimedia stream scheduling in resource-constrained environment 有权资源受限环境下多媒体流调度的方法与装置公开(公告)号：US07228535B2
公开(公告)日：2007-06-05
申请号：US10429449
申请日：2003-05-05
申请人： Pascal Frossard , Zhen Liu , Olivier Verscheure
发明人： Pascal Frossard , Zhen Liu , Olivier Verscheure
IPC分类号： G06F9/45
CPC分类号： H04L29/06 , H04L67/32 , H04L69/329
摘要： Techniques for computing a multimedia stream schedule in a resource-constrained environment. In one aspect of the invention, a technique for processing multiple media streams in accordance with a resource-constrained environment includes the following steps/operations. An optimization associated with a composite representation of the multiple media streams is computed based on timing constraints associated with the multiple media streams and one or more constraints associated with at least one device in the resource-constrained environment useable to present at least one of the multiple media streams. Scheduling transmission and/or storage of the multiple media streams, based on the optimization, is then performed. The multiple media streams may be encoded, based on the optimization, prior to the scheduling step/operation. Advantageously, the present invention may provide a scheduling strategy to multiplex multiple objects in a resource-constrained data path, while respecting all the presentation deadlines, and minimizing the required playback delay and decoding buffer.
摘要翻译： 用于在资源有限的环境中计算多媒体流调度的技术。 在本发明的一个方面，根据资源受限环境处理多个媒体流的技术包括以下步骤/操作。 基于与多个媒体流相关联的定时约束和与资源受限环境中的至少一个设备相关联的一个或多个约束来计算与多个媒体流的复合表示相关联的优化，其可用于呈现多个媒体流中的至少一个 媒体流。 然后，基于优化来调度多个媒体流的传输和/或存储。 在调度步骤/操作之前，可以基于优化对多个媒体流进行编码。 有利地，本发明可以提供调度策略以在资源受限的数据路径中复用多个对象，同时遵循所有呈现期限，并且使所需的重放延迟和解码缓冲器最小化。
-
5.发明申请Methods and Apparatus for Secure and Adaptive Delivery of Multimedia Content 有权多媒体内容的安全和自适应传送的方法和装置公开(公告)号：US20080013719A1
公开(公告)日：2008-01-17
申请号：US11781699
申请日：2007-07-23
IPC分类号： H04K1/04
CPC分类号： H04L65/602 , H04L29/06027 , H04L65/607
摘要： Techniques for securely and adaptively delivering multimedia content. It is assumed that a set of alternate access units for each time slot is obtained. Then, the encryption stream index of each access unit from the set of alternate access units of the previous time slot are obtained. An encryption stream index is then assigned to each access unit in the set of alternate access units in the current time slot, such that the encryption index increases over time. Thus, the invention overcomes the problem of encrypting a multimedia stream that may have multiple access units for each time slot by selecting the encryption index for each access unit such that the encryption index increases, regardless of which access unit the delivery system (e.g., server) selects for transmission.
摘要翻译： 安全和自适应地传送多媒体内容的技术。 假设获得了用于每个时隙的一组备用存取单元。 然后，获得来自前一时隙的一组备用访问单元的每个访问单元的加密流索引。 然后，将加密流索引分配给当前时隙中的备用访问单元集合中的每个访问单元，使得加密索引随时间增加。 因此，本发明克服了通过选择每个接入单元的加密索引来加密每个时隙可能具有多个接入单元的多媒体流的问题，使得加密索引增加，而不考虑哪个接入单元的传送系统（例如，服务器 ）选择进行传输。
-
公开(公告)号：US20070130359A1
公开(公告)日：2007-06-07
申请号：US11670512
申请日：2007-02-02
IPC分类号： G06F15/16
CPC分类号： H04L29/06 , H04L29/06027 , H04L65/4076 , H04L65/607 , H04L65/608 , H04L67/306 , H04L69/329
摘要： A resource-efficient live streaming system includes a broadcaster and a streaming server. The broadcaster receives a live feed and broadcasts a media stream to the streaming server containing several descriptions of the live feed along with control information. The broadcaster includes a stream thinner that implements a pruning algorithm. If descriptions from different streams are similar enough, one or more of them may be discarded without penalizing the quality of service perceived by the receivers. The streaming server assembles compressed data units into streams according to the control information from the broadcaster. The streaming server may also gather client feedback in order to estimate the status of the transmission channels and forwards the information to the broadcaster. The streaming server builds and streams media information to clients according to user preferences and receiver capabilities.
摘要翻译： 一个资源有效的直播流系统包括一个广播公司和一个流媒体服务器。 广播公司收到实时订阅源，并将媒体流广播到流媒体服务器，其中包含有关实时供稿的多个描述以及控制信息。 广播者包括实现修剪算法的流更薄。 如果来自不同流的描述足够相似，则可以丢弃它们中的一个或多个，而不会损害接收器感知到的服务质量。 流媒体服务器根据来自广播公司的控制信息将压缩数据单元组装成流。 流服务器还可以收集客户端反馈，以估计传输信道的状态并将信息转发给广播者。 流媒体服务器根据用户偏好和接收机功能，将媒体信息建立并传输给客户端。
-
公开(公告)号：US07657651B2
公开(公告)日：2010-02-02
申请号：US11670512
申请日：2007-02-02
IPC分类号： G06F13/00
CPC分类号： H04L29/06 , H04L29/06027 , H04L65/4076 , H04L65/607 , H04L65/608 , H04L67/306 , H04L69/329
摘要： A resource-efficient live streaming system includes a broadcaster and a streaming server. The broadcaster receives a live feed and broadcasts a media stream to the streaming server containing several descriptions of the live feed along with control information. The broadcaster includes a stream thinner that implements a pruning algorithm. If descriptions from different streams are similar enough, one or more of them may be discarded without penalizing the quality of service perceived by the receivers. The streaming server assembles compressed data units into streams according to the control information from the broadcaster. The streaming server may also gather client feedback in order to estimate the status of the transmission channels and forwards the information to the broadcaster. The streaming server builds and streams media information to clients according to user preferences and receiver capabilities.
摘要翻译： 一个资源有效的直播流系统包括一个广播公司和一个流媒体服务器。 广播公司收到实时订阅源，并将媒体流广播到流媒体服务器，其中包含有关实时供稿的多个描述以及控制信息。 广播者包括实现修剪算法的流更薄。 如果来自不同流的描述足够相似，则可以丢弃它们中的一个或多个，而不会损害接收器感知到的服务质量。 流媒体服务器根据来自广播公司的控制信息将压缩数据单元组装成流。 流服务器还可以收集客户端反馈，以估计传输信道的状态并将信息转发给广播者。 流媒体服务器根据用户偏好和接收机功能，将媒体信息建立并传输给客户端。
-
8.发明授权Methods and apparatus for secure and adaptive delivery of multimedia content 有权用于安全和自适应地传送多媒体内容的方法和装置公开(公告)号：US07623657B2
公开(公告)日：2009-11-24
申请号：US11781699
申请日：2007-07-23
IPC分类号： H04L9/00
CPC分类号： H04L65/602 , H04L29/06027 , H04L65/607
摘要： Techniques for securely and adaptively delivering multimedia content. It is assumed that a set of alternate access units for each time slot is obtained. Then, the encryption stream index of each access unit from the set of alternate access units of the previous time slot are obtained. An encryption stream index is then assigned to each access unit in the set of alternate access units in the current time slot, such that the encryption index increases over time. Thus, the invention overcomes the problem of encrypting a multimedia stream that may have multiple access units for each time slot by selecting the encryption index for each access unit such that the encryption index increases, regardless of which access unit the delivery system (e.g., server) selects for transmission.
摘要翻译： 安全和自适应地传送多媒体内容的技术。 假设获得了用于每个时隙的一组备用存取单元。 然后，获得来自前一时隙的一组备用访问单元的每个访问单元的加密流索引。 然后，将加密流索引分配给当前时隙中的备用访问单元集合中的每个访问单元，使得加密索引随时间增加。 因此，本发明克服了通过选择每个接入单元的加密索引来加密每个时隙可能具有多个接入单元的多媒体流的问题，使得加密索引增加，而不考虑哪个接入单元的传送系统（例如，服务器 ）选择进行传输。
-
公开(公告)号：US07526565B2
公开(公告)日：2009-04-28
申请号：US10406715
申请日：2003-04-03
IPC分类号： G06F15/16
CPC分类号： H04L65/607 , H04L29/06027 , H04L65/602 , H04L65/80 , H04N21/23439 , H04N21/2402 , H04N21/26216 , H04N21/2662 , H04N21/84
摘要： A system and method for streaming data over a communications network with varying streaming conditions, includes conditioning a data stream to create conditioned data representations including encoded representations targeting running conditions, wherein conditioning includes partitioning the data stream into data units, and generating the encoded representations of each of the data units, packaging the conditioned data representations with metadata specifying a target set of running conditions, wherein the conditioned data representations are packaged by pre-computing one or more trajectories among the encoded representations based on a given finite set of streaming conditions, observing a current run-time condition and selecting one of the packaged conditioned data representations for streaming over the computing network according to the running conditions in view of the current run-time condition in accordance with the observed current streaming condition, and a communications network responsive to the media server for streaming the selected packaged conditioned data representation.
摘要翻译： 一种用于通过具有变化的流状况的通信网络流式传输数据的系统和方法，包括调节数据流以创建经调节的数据表示，包括针对运行条件的编码表示，其中调理包括将数据流划分为数据单元，以及生成 每个数据单元，用条件数据表示包装以指定运行条件的目标集合的元数据，其中经调节的数据表示通过基于给定的有限流形式的条件预先计算编码表示中的一个或多个轨迹来打包， 观察当前的运行时间条件，并且根据当前运行时间条件根据观察到的当前流传输条件，根据运行条件，通过计算网络选择一个封装条件数据表示，并且通信网络 rk响应于媒体服务器以流式传输所选择的包装条件数据表示。
-
公开(公告)号：US20180260616A1
公开(公告)日：2018-09-13
申请号：US15453394
申请日：2017-03-08
CPC分类号： G06K9/00288 , G06K9/00 , G06K9/00268 , G06K9/4642 , G06K2209/05
摘要： Eardrums are automatically classified based on a feature set from a three-dimensional image of the eardrum, such as might be derived from a plenoptic image captured by a light field otoscope. In one aspect, a grid is overlaid onto the three-dimensional image of the eardrum. The grid partitions the three-dimensional image into cells. One or more descriptors are calculated for each of the cells, and the feature set includes the calculated descriptors. Examples of descriptors include various quantities relating to the depth and/or curvature of the eardrum. In another aspect, isocontour lines (of constant depth) are calculated for the three-dimensional image of the eardrum. One or more descriptors are calculated for the isocontour lines, and the feature set includes the calculated descriptors. Examples of descriptors include various quantities characterizing the isocontour lines.
-
-
-
-
-
-
-
-
-
搜索结果
17 条记录 (耗时 0.015 秒)
