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1.发明授权
公开(公告)号：US5768333A
公开(公告)日：1998-06-16
申请号：US758651
申请日：1996-12-02
CPC分类号： A61B6/502 , G06T7/0012
摘要： A computer-implemented method of identifying suspect masses in digital radiologic images and a system for computer-aided diagnosis of such images in which the images are thresholded at a large number of threshold levels to discriminate spots and a two stage classifier is applied to the spots. The first classification stage applies multiple rules predetermined from a training set of images, to a relatively computationally inexpensive set of initial features, namely area, compactness, eccentricity, contrast, and intensity variance for each spot. More computationally expensive features, namely edge orientation distribution and texture features, are computed only for spots that are accepted by the first classification stage to points for these spots in an expanded feature space. In the second classification stage, these points are classified as true positives or false positives in dependence on which mean of a plurality of clusters of true positives and a plurality of clusters of false positives, predetermined from the training set, is nearest in Mahalanobis distance.
摘要翻译： 用于识别数字放射图像中的可疑质量的计算机实现的方法以及用于计算机辅助诊断的图像的系统，其中以大量阈值水平阈值化图像以区分斑点和两级分类器被应用于斑点 。 第一分类阶段将从图像的训练集预先确定的多个规则应用到相对计算上廉价的初始特征集合，即每个点的面积，紧凑度，偏心率，对比度和强度方差。 更多计算上昂贵的特征，即边缘方向分布和纹理特征，仅针对第一分类阶段被接受的点到扩展特征空间中的这些点的点计算。 在第二分类阶段，这些点被分类为真阳性或假阳性，这取决于从训练集中预测的多个真阳性群和多个假阳性群的平均值在马哈拉诺比斯距离中最接近。
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2.发明授权System and method for performing fast forward and slow motion speed changes in a video stream based on video content 有权基于视频内容在视频流中执行快进和慢动作速度变化的系统和方法公开(公告)号：US06424789B1
公开(公告)日：2002-07-23
申请号：US09375950
申请日：1999-08-17
IPC分类号： H04N593
CPC分类号： H04N21/238 , G11B27/034 , G11B2220/213 , G11B2220/2512 , G11B2220/2545 , G11B2220/2562 , G11B2220/61
摘要： There is disclosed, for use in a video editing system, a video processing device capable of receiving a first video clip containing at least one shot (or scene) consisting of a sequence of uninterrupted related frames and performing fast forward or slow motion special effects that vary according to the activity level in the shot. The video processing device comprises an image processor capable of identifying the shot and determining a first activity level within at least a portion of the shot. The image processor then performs the selected speed change special effect by adding frames or deleting frames in the first portion in response to the activity level determination, thereby producing a modified shot.
摘要翻译： 公开了一种在视频编辑系统中使用的视频处理装置，其能够接收包含由不间断的相关帧序列组成的至少一个拍摄（或场景）的第一视频剪辑，并且执行快进或慢动作特殊效果， 根据拍摄中的活动级别而有所不同。 视频处理设备包括能够识别镜头并确定镜头的至少一部分内的第一活动级别的图像处理器。 然后，图像处理器响应于活动水平确定，通过在第一部分中添加帧或删除帧来执行所选择的速度变化特殊效果，从而产生修改的拍摄。
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3.发明授权Video retrieval of MPEG compressed sequences using DC and motion signatures 失效使用DC和运动签名的MPEG压缩序列的视频检索
公开(公告)号：US5870754A
公开(公告)日：1999-02-09
申请号：US637844
申请日：1996-04-25
CPC分类号： G06F17/30799 , G06F17/30825 , G06K9/00744 , G06K9/00758 , H04N21/84 , Y10S707/99931 , Y10S707/99933 , Y10S707/99945 , Y10S707/99948
摘要： Signatures from MPEG or Motion JPEG encoded video clips are extracted based on the luminance, chrominance, and motion vector values. The signatures are stored in a database, along with corresponding location, size, and time length information. The signature of a query video clip, also encoded in the MPEG or Motion JPEG format, is extracted. The signature of the query video clip is compared with the signatures stored in the meta database, with video clips having signatures similar to the signature of the query video clip identified. The video clips are then retrieved and displayed by selection of a user.
摘要翻译： 基于亮度，色度和运动矢量值，提取MPEG或Motion JPEG编码视频剪辑的签名。 签名存储在数据库中，以及相应的位置，大小和时间长度信息。 提取也以MPEG或Motion JPEG格式编码的查询视频剪辑的签名。 将查询视频剪辑的签名与存储在元数据库中的签名进行比较，其中视频剪辑具有与所识别的查询视频剪辑的签名类似的签名。 然后通过选择用户来检索和显示视频剪辑。
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公开(公告)号：US07340458B2
公开(公告)日：2008-03-04
申请号：US10139177
申请日：2002-05-06
IPC分类号： G06F17/30
CPC分类号： G06F17/30038 , Y10S707/99933 , Y10S707/99935 , Y10S707/99936 , Y10S707/99945 , Y10S707/99948
摘要： Multimedia information retrieval is performed using meta-descriptors in addition to descriptors. A “descriptor” is a representation of a feature, a “feature” being a distinctive characteristic of multimedia information, while a “meta-descriptor” is information about the descriptor. Meta-descriptors are generated for multimedia information in a repository (10, 12, 14, 16, 18, 20, 22, 24) by extracting the descriptors from the multimedia information (111), clustering the multimedia information based on the descriptors (112), assigning meta-descriptors to each cluster (113), and attaching the meta-descriptors to the multimedia information in the repository (114). The multimedia repository is queried by formulating a query using query-by-example (131), acquiring the descriptor/s and meta-descriptor/s for a repository multimedia item (132), generating a query descriptor/s if none of the same type has been previously generated (133, 134), comparing the descriptors of the repository multimedia item and the query multimedia item (135), and ranking and displaying the results (136, 137).
摘要翻译： 除了描述符之外，使用元描述符执行多媒体信息检索。 “描述符”是特征的表示，“特征”是多媒体信息的独特特征，而“元描述符”是关于描述符的信息。 通过从多媒体信息（111）提取描述符，通过基于描述符（112）对多媒体信息进行聚类，为存储库（10,12,14,16,18,20,22,24）中的多媒体信息生成元描述符 ），向每个集群（113）分配元描述符，以及将所述元描述符附加到所述存储库（114）中的多媒体信息。 通过使用逐个示例（131）制定查询，获取存储库多媒体项目（132）的描述符和元描述符/ s来查询多媒体存储库，生成查询描述符/ s，如果没有相同的 先前已经生成了类型（133,134），比较存储库多媒体项目和查询多媒体项目（135）的描述符，并对结果进行排序和显示（136,137）。
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公开(公告)号：US06411724B1
公开(公告)日：2002-06-25
申请号：US09347214
申请日：1999-07-02
IPC分类号： G06T700
CPC分类号： G06F17/30038 , Y10S707/99933 , Y10S707/99935 , Y10S707/99936 , Y10S707/99945 , Y10S707/99948
摘要： Multimedia information retrieval is performed using meta-descriptors in addition to descriptors. A “descriptor” is a representation of a feature, a “feature” being a distinctive characteristic of multimedia information, while a “meta-descriptor” is information about the descriptor. Meta-descriptors are generated for multimedia information in a repository (10, 12, 14, 16, 18, 20, 22, 24) by extracting the descriptors from the multimedia information (111), clustering the multimedia information based on the descriptors (112), assigning meta-descriptors to each cluster (113), and attaching the meta-descriptors to the multimedia information in the repository (114). The multimedia repository is queried by formulating a query using query-by-example (131), acquiring the descriptor/s and meta-descriptor/s for a repository multimedia item (132), generating a query descriptor/s if none of the same type has been previously generated (133, 134), comparing the descriptors of the repository multimedia item and the query multimedia item (135), and ranking and displaying the results (136, 137).
摘要翻译： 除了描述符之外，使用元描述符执行多媒体信息检索。 “描述符”是特征的表示，“特征”是多媒体信息的独特特征，而“元描述符”是关于描述符的信息。 通过从多媒体信息（111）提取描述符，通过基于描述符（112）对多媒体信息进行聚类，为存储库（10,12,14,16,18,20,22,24）中的多媒体信息生成元描述符 ），向每个集群（113）分配元描述符，以及将所述元描述符附加到所述存储库（114）中的多媒体信息。 通过使用逐个示例（131）制定查询，获取存储库多媒体项目（132）的描述符和元描述符/ s来查询多媒体存储库，生成查询描述符/ s，如果没有相同的 先前已经生成了类型（133,134），比较存储库多媒体项目和查询多媒体项目（135）的描述符，并对结果进行排序和显示（136,137）。
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