发明申请
- 专利标题: MEDIA FINGERPRINTS THAT RELIABLY CORRESPOND TO MEDIA CONTENT
- 专利标题(中): 媒体指示与媒体内容相当的指纹
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申请号: US12681598申请日: 2008-10-06
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公开(公告)号: US20110026761A1公开(公告)日: 2011-02-03
- 发明人: Regunathan Radhakrishnan , Claus Bauer
- 申请人: Regunathan Radhakrishnan , Claus Bauer
- 申请人地址: US CA San Francisco
- 专利权人: DOLBY LABORATORIES LICENSING CORP.
- 当前专利权人: DOLBY LABORATORIES LICENSING CORP.
- 当前专利权人地址: US CA San Francisco
- 优先权: USPCT/US08/05588 20080501
- 国际申请: PCT/US08/78975 WO 20081006
- 主分类号: G06K9/00
- IPC分类号: G06K9/00
摘要:
Quantized energy values are accessed to initially represent a temporally related group of content elements in a media sequence. The values are accessed over a matrix of regions into which the initial representation is partitioned. The initial representation may be downsampled and/or cropped from the content. A basis vector set is estimated in a dimensional space from the values. The initial representation is transformed into a subsequent representation, which is in another dimensional space. The subsequent representation projects the initial representation, based on the basis vectors. The subsequent representation reliably corresponds to the media content portion over a change in a geometric orientation thereof. Repeated for other media content portions of the group, subsequent representations of the first and other portions are averaged or transformed over time. The averaged/transformed values reliably correspond to the content portion over speed changes. The initial representation may include spatial or transform related information.