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1. 发明申请

WO2006004797A2 METHODS AND SYSTEMS FOR FEATURE SELECTION 审中-公开
标题翻译：特征选择的方法和系统
公开(公告)号：WO2006004797A2
公开(公告)日：2006-01-12
申请号：PCT/US2005/023018
申请日：2005-06-27
申请人： THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OFNEW YORK , LIU, Yan , KENDER, John, R.
发明人： LIU, Yan , KENDER, John, R.
IPC分类号： G06K9/62
CPC分类号： G06K9/6228 , G06K9/6229 , Y10S707/99937
摘要： Methods and systems for feature selection are described. In particular, methods and systems for feature selection for data classification, retrieval, and segmentation are described. Certain embodiments of the invention are directed to methods and systems for complement sort-merge tree (CSMT), fast-converging sort-merge tree (FSMT), and multi-level (ML) feature selection. Accurate and fast results may be obtained by the feature selection methods and systems described herein.
摘要翻译：描述用于特征选择的方法和系统。特别地，描述了用于数据分类，检索和分割的特征选择的方法和系统。本发明的某些实施例涉及用于补码分类合并树（CSMT），快速聚合分类合并树（FSMT）和多级（ML）特征选择的方法和系统。通过本文描述的特征选择方法和系统可以获得准确和快速的结果。

2. 发明申请

WO2005072239A2 METHODS AND SYSTEMS FOR ANALYZING AND SUMMARIZING VIDEO 审中-公开
标题翻译：分析和概述视频的方法和系统
公开(公告)号：WO2005072239A2
公开(公告)日：2005-08-11
申请号：PCT/US2005/001859
申请日：2005-01-21
申请人： THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK , KENDER, John, R. , LIU, Tiecheng
发明人： KENDER, John, R. , LIU, Tiecheng
CPC分类号： G06K9/00711 , G06F17/30802 , G06F17/30811 , G06F17/30843 , G06K9/00228
摘要： Methods and systems are provided for analyzing and summarizing instructional videos. According to certain embodiments, video frames are segmented into board background blocks, board content blocks, and irrelevant blocks, and are subsequently merged into a board background region, board content region, occlusion by instructor region, and irrelevant region. The number of chalk pixels in the content areas of each frame are used to define key frames. Mosaiced images are developed to compensate occlusions by an instructor. Additionally, the concept of semantic teaching units is presented, where such semantic units are detected by a model based on the recognition of actions of instructors, and on the measurement of temporal duration and spatial location of board content. Various alternate embodiments are also disclosed.
摘要翻译：提供方法和系统，用于分析和总结教学视频。根据某些实施例，视频帧被分割成板背景块，板内容块和无关块，并且随后被合并到板背景区域，板内容区域，教师区域的闭塞和不相关的区域。每帧内容区域中的白垩像素数用于定义关键帧。开发马赛克图像以补偿教练的闭塞。另外，提出了语义教学单元的概念，其中基于对教师的动作的识别的模型以及对板内容的时间持续时间和空间位置的测量来检测这样的语义单元。还公开了各种替代实施例。

3. 发明申请

WO2003105489A1 METHOD AND DEVICE FOR ONLINE DYNAMIC SEMANTIC VIDEO COMPRESSION AND VIDEO INDEXING 审中-公开
标题翻译：在线动态视频压缩和视频索引的方法和设备
公开(公告)号：WO2003105489A1
公开(公告)日：2003-12-18
申请号：PCT/US2002/018231
申请日：2002-06-07
申请人： THE TRUSTEES OF COLUMBIA UNIVERSITY , TIECHENG, Liu , KENDER, John, R.
发明人： TIECHENG, Liu , KENDER, John, R.
IPC分类号： H04N07/12
CPC分类号： G06F17/30858 , H04N19/20
摘要： A technique for semantic video compression is shown in block (120). Uncompressed video data (210), including a plurality of video data segments (S1, S2, ...Sn), are organized into two or more buffer slots (220), such that each of the two or more buffer slots is filled with one or more of the received video data segments, thereby forming two or more buffered video portions corresponding to the two or more buffer slots. The buffered video data is then processed by a leaking rule, to extract one or more buffered video portions, while outputting one or more non-extracted buffered video portions, as compressed video data (230). The leaking rule data is stored in a histogram (240) and later used to organize and index data according to a users request.
摘要翻译：在框（120）中示出了语义视频压缩技术。将包括多个视频数据段（S1，S2，... Sn）的未压缩视频数据（210）组织成两个或更多个缓冲槽（220），使得两个或更多个缓冲槽中的每一个被填充所接收的视频数据段中的一个或多个，从而形成对应于两个或多个缓冲槽的两个或多个缓冲视频部分。缓冲的视频数据然后由泄漏规则处理，以便在输出一个或多个非提取的缓冲视频部分作为压缩视频数据（230）的同时提取一个或多个缓冲的视频部分。泄漏规则数据存储在直方图（240）中，随后用于根据用户请求组织和索引数据。

4. 发明申请

WO2003090444A3 METHODS FOR SELECTING A SUBSEQUENCE OF VIDEO FRAMES FROM A SEQUENCE OF VIDEO FRAMES 审中-公开
公开(公告)号：WO2003090444A3
公开(公告)日：2003-10-30
申请号：PCT/US2003/011714
申请日：2003-04-15
申请人： THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK , LIU, Tiecheng , KENDER, John, R.
发明人： LIU, Tiecheng , KENDER, John, R.
IPC分类号： H04N7/12
摘要： A method for selecting a subsequence of video frames (72-84) from a sequence of video frames (70) comprising defining a distance function between video frames (72-84) in the sequence of video frames (70). An optimization criterion is defined to express a feature of a plurality of subsequences of video frames (72-84) selected from the sequence of video frames (70). A method is disclosed for displaying key frames for browsing and streaming.

5. 发明申请

WO2003090444A2 METHODS FOR SELECTING A SUBSEQUENCE OF VIDEO FRAMES FROM A SEQUENCE OF VIDEO FRAMES 审中-公开
标题翻译：从视频框架的序列中选择视频框架的后续方法
公开(公告)号：WO2003090444A2
公开(公告)日：2003-10-30
申请号：PCT/US2003/011714
申请日：2003-04-15
申请人： THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK , LIU, Tiecheng , KENDER, John, R.
发明人： LIU, Tiecheng , KENDER, John, R.
IPC分类号： H04N
CPC分类号： G06K9/00744 , G06F17/30843
摘要： A method for selecting a subsequence of video frames from a sequence of video frames comprising defining a distance function between video frames in the sequence of video frames. An optimization criterion is defined to express a feature of a plurality of subsequences of video frames selected from the sequence of video frames. The method determines the video frames in the subsequence by optimizing the values of an optimization criterion function defined on all the subsequences. A method is disclosed for determining the appropriate temporal boundaries for playing key frames. A method is also disclosed for displaying key frames for browsing and streaming.
摘要翻译：一种用于从视频帧序列中选择视频帧的子序列的方法，包括定义视频帧序列中视频帧之间的距离函数。定义优化标准来表示从视频帧序列中选择的视频帧的多个子序列的特征。该方法通过优化在所有子序列上定义的优化标准函数的值来确定子序列中的视频帧。公开了一种用于确定播放关键帧的适当时间边界的方法。还公开了一种用于显示用于浏览和流式传输的关键帧的方法。

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