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11.发明授权Two-pass encoding method of digital motion video sequences for constant-or variable bit rate 失效用于恒定或可变比特率的数字运动视频序列的双通道编码方法公开(公告)号：US06192154B1
公开(公告)日：2001-02-20
申请号：US09013149
申请日：1998-01-26
IPC分类号： G06K936
CPC分类号： H04N19/87 , H04N19/115 , H04N19/124 , H04N19/14 , H04N19/142 , H04N19/15 , H04N19/172 , H04N19/176 , H04N19/177 , H04N19/179 , H04N19/182 , H04N19/192 , H04N19/61
摘要： Systems and methods are provided for encoding units of digital information such as pictures, whereby all the data is first analyzed by running a compression pass over all the data, using the in the encoder embedded rate control mechanism. Picture attributes, such as quantization scale setting and bits produced will be extracted from the resulting bitstream, and analyzing this, indiviudal unit (picture) quantization scale and bit allocation settings are prepared for a next pass for either a constant- or variable bit rate, whereby buffer boundaries are observed. In a second compression pass through the same data, a constant- or variable bit rate compressed bitstream is produced, but this time bypassing the embedded rate control mechanism, and using the prepared picture bit allocation and quantization scale settings instead. Additionally, a mechanism will supervise the total bit production accuracy.
摘要翻译： 提供了用于编码诸如图片的数字信息的单元的系统和方法，其中使用编码器嵌入速率控制机制中的所有数据首先通过对所有数据进行压缩传递来分析所有数据。 将从所得到的比特流中提取诸如量化比例设置和产生的比特率的图像属性，并且分析这个独立单位（图像）量化比例和比特分配设置，用于下一次通过恒定或可变比特率， 从而观察到缓冲区边界。 在通过相同数据的第二次压缩传递中，产生常数或可变比特率压缩比特流，但是这次绕过嵌入式速率控制机制，并改为使用准备的图像比特分配和量化比例设置。 另外，一种机制将监督总位生产精度。
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公开(公告)号：US09426477B2
公开(公告)日：2016-08-23
申请号：US12712717
申请日：2010-02-25
申请人： Ligang Lu , Peter Westerink
发明人： Ligang Lu , Peter Westerink
IPC分类号： H04N7/32 , H04N19/137 , H04N19/172 , H04N19/107 , H04N19/14
CPC分类号： H04N19/137 , H04N19/107 , H04N19/14 , H04N19/172
摘要： Methods and apparatus are provided for encoding video, such as surveillance video. A video frame is encoded by evaluating a level of activity in video frame relative to one or more neighboring frames; encoding the video frame using an inter-coding technique if the evaluation satisfies one or more predefined inter-coding criteria, wherein said inter-coding technique is applied to said video frame without a Group of Picture structure having a maximum number of consecutive inter-coded frames; and encoding the video frame using an intra-coding technique if the evaluation satisfies one or more predefined intra-coding criteria. The evaluating step may comprise, for example, determining whether differences between the video frame and the one or more neighboring frames exceed a predefined threshold.
摘要翻译： 提供了编码视频的方法和装置，如监视视频。 通过评估视频帧中相对于一个或多个相邻帧的活动水平来编码视频帧; 如果评估满足一个或多个预定义的帧间编码标准，则使用帧间编码技术对视频帧进行编码，其中所述帧间编码技术被应用于所述视频帧，而不具有最大数量的连续帧间编码的图像组 框架 以及如果所述评估满足一个或多个预定义的内部编码标准，则使用帧内编码技术来编码所述视频帧。 评估步骤可以包括例如确定视频帧与一个或多个相邻帧之间的差异是否超过预定阈值。
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公开(公告)号：US20080225953A1
公开(公告)日：2008-09-18
申请号：US12128935
申请日：2008-05-29
IPC分类号： H04N11/02
CPC分类号： H04N21/23439 , H04N19/159 , H04N19/164 , H04N19/172 , H04N19/587 , H04N19/61 , H04N21/2662
摘要： An apparatus and corresponding method are provided for selecting one of several alternate input streams for transmission, the method including determining bandwidth requirements for each of the alternate input streams, measuring bandwidth currently available for transmission, and selecting for transmission one of the alternate input streams that has the highest determined bandwidth requirement less than or equal to the measured bandwidth currently available for transmission.
摘要翻译： 提供了一种装置和相应方法，用于选择若干替代输入流中的一个以进行传输，所述方法包括确定每个替代输入流的带宽需求，测量当前可用于传输的带宽，以及选择传输替代输入流之一， 具有小于或等于当前可用于传输的测量带宽的最高确定带宽要求。
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14.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。
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15.发明授权Method and apparatus for encoding a segmented image without loss of information 失效用于编码分割图像而不丢失信息的方法和装置
公开(公告)号：US5577134A
公开(公告)日：1996-11-19
申请号：US215684
申请日：1994-03-22
申请人： Peter Westerink
发明人： Peter Westerink
IPC分类号： H04N5/92 , G06T5/00 , G06T9/00 , G06T9/20 , H03M7/30 , H04N1/41 , H04N5/937 , H04N7/26 , H04N9/804 , H04N9/808 , G06K9/36
CPC分类号： G06T7/0085 , G06T9/20
摘要： An image processing system encodes a segmented or mosaic image into a set of fixed-length data packets, from which the segmented image may be reproduced with no significant loss of detail. The exemplary system includes a chain coder which translates the segmented image into a form in which the image segments are represented as respective sequences of border values, each border value indicating a direction to the next border value. This image is further encoded such that each pair of border values becomes a single further border value and a pair of complementary codes. These further border values are processed in the same manner, to further reduce the number of border values needed to represent the image. When the number of border values has been reduced to a level such that the image may be encoded in a single packet, the encoding system provides these border values and all complementary code values that have been generated as the code representing the segmented image. Both the reduced border values and the complementary codes are variable-length coded before being stored for use by, or transmitted to an image reconstruction system.
摘要翻译： 图像处理系统将分割的或马赛克图像编码成一组固定长度的数据分组，从而可以再现分割图像而没有明显的细节损失。 该示例性系统包括链式编码器，其将分割的图像转换成其中图像片段被表示为相应的边界值序列的形式，每个边界值指示到下一个边界值的方向。 该图像被进一步编码，使得每对边界值变为单个另外的边界值和一对互补码。 这些进一步的边界值以相同的方式处理，以进一步减少表示图像所需的边界值的数量。 当边界值的数量已经减少到使得图像可以被编码在单个分组中的水平时，编码系统提供这些边界值和已经生成的代表分割图像的代码的所有互补代码值。 减少的边界值和互补码都被可变长度编码，然后被存储供图像重建系统使用或传输到图像重建系统。
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公开(公告)号：US20110246658A1
公开(公告)日：2011-10-06
申请号：US12753954
申请日：2010-04-05
申请人： Paolo Dettori , Julio Nogima , Frank A. Schaffa , Peter Westerink , Chai W. Wu
发明人： Paolo Dettori , Julio Nogima , Frank A. Schaffa , Peter Westerink , Chai W. Wu
IPC分类号： G06F15/16
CPC分类号： H04L67/1008 , H04L67/1063
摘要： The invention provides a method, system, and program product for optimizing data exchange in a peer-to-peer network (PTPN). In one embodiment, the invention provides a method of optimizing real-time data exchange in a peer-to-peer network (PTPN), the method comprising: receiving, from each peer in the PTPN: an upload limit of the peer; a download limit of the peer; and a delay to each other peer in the PTPN; determining, for each peer in the PTPN: a rate at which data may be transferred to at least one other peer in the PTPN (transfer rate); and a rate at which data may be received from at least one other peer in the PTPN (receive rate); and instructing each peer in the PTPN to: transfer data to at least one other peer in the PTPN at the transfer rate; and receive data from at least one other peer in the PTPN at the receive rate.
摘要翻译： 本发明提供了一种用于优化对等网络（PTPN）中的数据交换的方法，系统和程序产品。 在一个实施例中，本发明提供一种优化对等网络（PTPN）中的实时数据交换的方法，该方法包括：从PTPN中的每个对等体接收对等体的上传限制; 对等体的下载限制; 并在PTPN中对方的延迟; 确定对于PTPN中的每个对等体：数据可以在PTPN中传送到至少一个其他对等体的速率（传输速率）; 以及可以从PTPN中的至少一个其他对等体接收数据的速率（接收速率）; 并指示PTPN中的每个对等体：以PTAN的传输速率将数据传输到PTPN中的至少一个其他对等体; 并以接收速率从PTPN中的至少一个其他对等体接收数据。
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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。
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18.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。
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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。
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20.发明授权
公开(公告)号：US5420971A
公开(公告)日：1995-05-30
申请号：US213127
申请日：1994-03-15
CPC分类号： G06T9/20 , G06T7/0085
摘要： An edge finder for an image processing system locates edges in a digitized image over several different ranges of pixel values and assigns, to each pixel value an edge characteristic value which represents a minimum edge value for the pixel in the image. The exemplary edge finder that is able to resolve transitions occurring between two pixels or over groups of four or eight pixels to determine whether an edge should be defined between the original two pixels. The edge finder simultaneously examines four edges in two dimensions to determine the edgeness value for each pixel in the digitized image.
摘要翻译： 用于图像处理系统的边缘查找器将数字化图像中的边缘定位在几个不同的像素值范围上，并且向每个像素值分配表示图像中的像素的最小边缘值的边缘特征值。 能够解析发生在四个或八个像素的两个像素或以上组之间的转换的示例性边缘寻找器，以确定是否应当在原始两个像素之间定义边缘。 边缘检索器同时检查二维中的四个边，以确定数字化图像中每个像素的渐近值。
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