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公开(公告)号：US10609405B2
公开(公告)日：2020-03-31
申请号：US15601755
申请日：2017-05-22
申请人： Stephane Coulombe , Didier Joset , Maged E. Beshai
发明人： Stephane Coulombe , Didier Joset , Maged E. Beshai
IPC分类号： H04N11/02 , H04N19/46 , H04N19/136 , H04N19/132 , H04L29/06 , H04N19/40 , H04N19/124
摘要： A method and apparatus for optimal signal encoding based on reference data relating encoded-signal characteristics to encoding parameters are disclosed. Reference vectors of encoding parameters and corresponding measurements of encoded-signal characteristics are used to establish a functional relationship between each characteristic and the encoding parameters. Candidate vectors of encoding parameters are identified based on user-defined boundaries of both the encoding parameters and acceptable encoded-signal characteristics. A figure of merit is determined for each candidate vector and the candidate vector of highest figure of merit is presented to an encoder.
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2.发明授权Method and system for increasing robustness of visual quality metrics using spatial shifting 有权使用空间变换增加视觉质量度量的鲁棒性的方法和系统公开(公告)号：US08983206B2
公开(公告)日：2015-03-17
申请号：US13463733
申请日：2012-05-03
CPC分类号： G06T7/0002 , G06T2207/20064 , G06T2207/30168 , H04N19/85
摘要： A visual quality assessment method and system are based on deriving a quality metric by comparing sub-band approximations of a distorted image and an undistorted version of the same image, providing a good compromise between computational complexity and accuracy. The sub-band approximations are derived from Discrete Wavelet (Haar) transforms of small image blocks of each image. Due to inherent symmetries, the wavelet transform is “blind” to certain types of distortions. But the accuracy of the method is enhanced, and the blindness of the transform is overcome, by computing quality metrics for the distorted image as well as computing quality metrics for a shifted version of the distorted image and combining the results.
摘要翻译： 视觉质量评估方法和系统基于通过比较失真图像的子带近似和相同图像的未失真版本来导出质量度量，从而在计算复杂性和精度之间提供了良好的折中。 子带近似来自每个图像的小图像块的离散小波（Haar）变换。 由于固有的对称性，小波变换对于某些类型的失真是“盲”的。 但是，通过计算失真图像的质量度量以及计算失真图像的偏移版本的质量度量并结合结果，可以提高方法的准确性，并克服变换的盲目性。
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3.发明授权Method and system for determining a quality measure for an image using multi-level decomposition of images 有权用于使用图像的多级分解确定图像的质量测量的方法和系统公开(公告)号：US08515182B2
公开(公告)日：2013-08-20
申请号：US12906112
申请日：2010-10-17
IPC分类号： G06K9/48
CPC分类号： G06K9/6201 , G06T7/0002 , G06T2207/20064 , G06T2207/30168
摘要： Method and system for determining a measure of quality for images by using multi-level decomposition are presented. Multi-level decomposition of images is performed in the wavelet domain producing subbands at each level of decomposition. Aggregation of subbands is performed across multiple levels to produce an accurate measure of image quality. By aggregating only selected subbands the computational complexity of the method is greatly reduced.
摘要翻译： 提出了通过使用多级分解确定图像质量度量的方法和系统。 在小波域中执行图像的多级分解，在每个分解级别产生子带。 在多个级别上执行子带的聚合，以产生图像质量的准确度量。 通过聚合所选择的子带，该方法的计算复杂度大大降低。
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4.发明授权System and method for conveying terminal capability and user preferences-dependent content characteristics for content adaptation 有权用于传送终端能力的系统和方法以及用于内容适配的用户偏好相关内容特征公开(公告)号：US07685315B2
公开(公告)日：2010-03-23
申请号：US10281872
申请日：2002-10-28
申请人： Pekka Pessi , Stephane Coulombe
发明人： Pekka Pessi , Stephane Coulombe
IPC分类号： G06F15/16
CPC分类号： H04L65/1006 , H04L65/1083 , H04L65/602 , H04L65/605 , H04L67/303 , H04L67/306
摘要： A system and method for conveying content-specific characteristics related to terminal capabilities and user preferences, and adapting content for particular terminals in response to the conveyed information. A content type or other message characteristic that is recognizable by the terminal is identified, as are operational confines of the terminal by which the content type is to comply. The content type is associated with the operational confines of the terminal. The content type and associated operational confines are provided to the network server for use by the network server in delivering messages to the terminal as dictated by the operational confines.
摘要翻译： 一种用于传送与终端能力和用户偏好相关的内容特定特性的系统和方法，以及响应于所传送的信息来适应特定终端的内容。 识别终端可识别的内容类型或其他消息特征，以及内容类型要符合的终端的操作限制。 内容类型与终端的操作限制相关联。 将内容类型和相关的操作限制提供给网络服务器，以供网络服务器根据操作限制向终端传送消息。
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5.发明申请SYSTEM AND METHOD FOR QUALITY-AWARE SELECTION OF PARAMETERS IN TRANSCODING OF DIGITAL IMAGES 有权在数字图像转换中质量选择参数的系统和方法公开(公告)号：US20090141990A1
公开(公告)日：2009-06-04
申请号：US12164836
申请日：2008-06-30
IPC分类号： G06K9/46
CPC分类号： G06T9/004 , H04N19/115 , H04N19/126 , H04N19/149 , H04N19/154 , H04N19/192 , H04N19/40
摘要： Several quality-aware transcoding systems and methods are described, in which the impact of both quality factor (QF) and scaling parameter choices on the quality of transcoded images are considered in combination. A basic transcoding system is enhanced by the addition of a quality prediction look-up table, and a method of generating such a table is also shown.
摘要翻译： 描述了几种质量感知转码系统和方法，其中考虑质量因子（QF）和缩放参数选择对转码图像质量的影响。 通过添加质量预测查找表来增强基本代码转换系统，并且还示出了生成这样的表格的方法。
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公开(公告)号：US20050060411A1
公开(公告)日：2005-03-17
申请号：US10664058
申请日：2003-09-16
申请人： Stephane Coulombe , Umesh Chandra
发明人： Stephane Coulombe , Umesh Chandra
CPC分类号： H04L65/605 , H04L29/06 , H04L65/1016 , H04L67/28 , H04L69/24 , H04L69/329
摘要： A system and method is provided that allows proxy servers to receive capability and preference information concerning user agents (502 and 510) desiring to establish a media session. The proxy server compares the capabilities of the user agents and determines whether an incompatibility exists between them. In the event that an incompatibility does exist, the proxy server may invoke the services of an adaptation server (508) to provide the necessary adaptation required to allow the media session to proceed. The adaptation system allows either the terminating or originating proxy server to make the adaptation determination to allow the adaptation server to modify the offered media session descriptions so that the media streams may be routed through the adaptation server to adapt between incompatible media parameters.
摘要翻译： 提供了一种系统和方法，其允许代理服务器接收有关希望建立媒体会话的用户代理（502和510）的能力和偏好信息。 代理服务器比较用户代理的功能，并确定它们之间是否存在不兼容性。 在存在不兼容性的情况下，代理服务器可以调用适配服务器（508）的服务以提供允许媒体会话继续进行所需的必要调整。 适配系统允许终止或始发代理服务器进行适配确定以允许适配服务器修改所提供的媒体会话描述，使得媒体流可以通过适配服务器路由以适应不兼容的媒体参数。
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公开(公告)号：US08886824B2
公开(公告)日：2014-11-11
申请号：US10765576
申请日：2004-01-26
申请人： Stephane Coulombe , Umesh Chandra
发明人： Stephane Coulombe , Umesh Chandra
CPC分类号： H04L51/10 , H04L51/04 , H04L51/066 , H04L51/38 , H04W4/18 , H04W88/184
摘要： A method (and corresponding equipment) by which a multimedia message is sent from a sending terminal (21) via a messaging server (22)—such as a MMS Proxy-Relay in MMS or a SIP proxy server in SIP IM—to a receiving terminal (25) having limited multimedia capabilities, with the sending terminal (21) adapted to include a user agent (21a) for inserting, into the message, media characteristics of the message sufficient in detail to enable the messaging server (22) to determine whether the message should be transcoded based on actual or assumed multimedia capabilities of the receiving terminal (25), and with the messaging server (22) configured to read the media characteristics and decide whether the message should be transcoded based only on the inserted media characteristics and on actual or assumed multimedia capabilities of the receiving terminal (25). The media characteristics are advantageously inserted into the header of the message.
摘要翻译： 一种通过消息传送服务器（22）从发送终端（21）发送多媒体消息的方法（以及对应的设备），例如MMS中的MMS代理中继或SIP IM中的SIP代理服务器到接收 终端（25）具有有限的多媒体能力，发送终端（21）适于包括用户代理（21a），用于向消息中插入足够详细信息的消息的媒体特性，以使消息服务器（22）能够确定 是否应该基于接收终端（25）的实际或假定的多媒体能力对消息进行代码转换，并且消息传送服务器（22）被配置为读取媒体特性并且基于插入的媒体特性来确定消息是否应该被转码 以及接收终端（25）的实际或假定的多媒体能力。 媒体特性有利地插入消息的标题中。
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8.发明申请METHOD AND SYSTEM FOR INCREASING ROBUSTNESS OF VISUAL QUALITY METRICS USING SPATIAL SHIFTING 有权使用空间移位增加视觉质量度量的鲁棒性的方法和系统公开(公告)号：US20120281924A1
公开(公告)日：2012-11-08
申请号：US13463733
申请日：2012-05-03
IPC分类号： G06K9/68
CPC分类号： G06T7/0002 , G06T2207/20064 , G06T2207/30168 , H04N19/85
摘要： A visual quality assessment method and system are based on deriving a quality metric by comparing sub-band approximations of a distorted image and an undistorted version of the same image, providing a good compromise between computational complexity and accuracy. The sub-band approximations are derived from Discrete Wavelet (Haar) transforms of small image blocks of each image. Due to inherent symmetries, the wavelet transform is “blind” to certain types of distortions. But the accuracy of the method is enhanced, and the blindness of the transform is overcome, by computing quality metrics for the distorted image as well as computing quality metrics for a shifted version of the distorted image and combining the results.
摘要翻译： 视觉质量评估方法和系统基于通过比较失真图像的子带近似和相同图像的未失真版本来导出质量度量，从而在计算复杂性和精度之间提供了良好的折中。 子带近似来自每个图像的小图像块的离散小波（Haar）变换。 由于固有的对称性，小波变换对某些类型的失真是无效的。 但是，通过计算失真图像的质量度量以及计算失真图像的偏移版本的质量度量并结合结果，可以提高方法的准确性，并克服变换的盲目性。
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9.发明申请公开(公告)号：US20110038548A1
公开(公告)日：2011-02-17
申请号：US12906112
申请日：2010-10-17
IPC分类号： G06K9/48
CPC分类号： G06K9/6201 , G06T7/0002 , G06T2207/20064 , G06T2207/30168
摘要： Method and system for determining a measure of quality for images by using multi-level decomposition are presented. Multi-level decomposition of images is performed in the wavelet domain producing subbands at each level of decomposition. Aggregation of subbands is performed across multiple levels to produce an accurate measure of image quality. By aggregating only selected subbands the computational complexity of the method is greatly reduced.
摘要翻译： 提出了通过使用多级分解确定图像质量度量的方法和系统。 在小波域中执行图像的多级分解，在每个分解级别产生子带。 在多个级别上执行子带的聚合，以产生图像质量的准确度量。 通过聚合所选择的子带，该方法的计算复杂度大大降低。
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10.发明申请公开(公告)号：US20110033119A1
公开(公告)日：2011-02-10
申请号：US12906111
申请日：2010-10-17
IPC分类号： G06K9/48
CPC分类号： G06K9/4604 , G06T7/0004 , G06T2207/20016 , G06T2207/20064 , G06T2207/30168
摘要： Method and system for determining a measure of quality for images are presented. Multi-level decomposition of images in the wavelet domain using a variable number of levels of decomposition and aggregation of selected subbands is performed to obtain an accurate measure of quality. The processing time is reduced in comparison to that required by other methods for generating measures of quality.
摘要翻译： 提出了确定图像质量度量的方法和系统。 执行小波域中图像的多级分解，使用可选数量的所选子带的分解和聚合级别，以获得准确的质量度量。 与用于产生质量测量的其他方法所需的处理时间相比，处理时间减少。
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