发明名称 System and method for detecting repetitions in a multimedia stream
摘要 Large amounts of multimedia data are transmitted over information networks in the form of a digital stream, analog video, or text captioning. Often, repetitions such as paid advertisements, theme music at the commencement of a TV broadcast, and common jingles and slogans occur in these streams. Detection of repetitions in a transmitted signal such as streaming audio or video is described, and includes extracting a plurality of samples from the information stream and accumulating the samples into segments comprising an interval of the transmitted signal. A vector indicative of the samples in each of the segments is generated, and each of the vectors in the segments is correlated to generate a covariance matrix, or signature, corresponding to the segment. Each of the covariance matrices are aggregated into a sequence of covariance matrices and compared to other covariance matrices to generate a distance matrix. The distance matrix includes a distance value, indicative of the similarity between the distance matrices, as a result of the comparing of each matrix. The distance matrix is then traversed to determine similar sequences of covariance matrices.
申请公布号 US7065544(B2) 申请公布日期 2006.06.20
申请号 US20010997731 申请日期 2001.11.29
申请人 HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. 发明人 MORENO PEDRO J.
分类号 G06F17/15;G01R31/28;G06F17/30;H04K1/00 主分类号 G06F17/15
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