发明名称 |
Method and a system for indexing and searching for video documents |
摘要 |
A method of indexing a video document represents the video document in the form of a parallelepipedal volume obtained by juxtaposing, on a time axis, successive frames of the video document where each frame is represented by a matrix of pixels in a two-dimensional space. A space-time video slice of the video document is constructed by extracting a set of pixels for each frame of the video document in a same line defined relative to a first direction of the frames and juxtaposing the lines of pixels corresponding to the frames on a time axis to form a space-time video slice of a length defined by the juxtaposed lines of pixels and of a height equal to the length of the lines extracted from each of the frames. The length is a function of the dimension of the frames in a second direction and the orientation of the lines. The colorimetric values of the pixels of the lines of the space-time video slice are initialized on the basis of the content of the lines extracted from the frames of the video document.
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申请公布号 |
US8369407(B2) |
申请公布日期 |
2013.02.05 |
申请号 |
US20080154671 |
申请日期 |
2008.05.23 |
申请人 |
ADVESTIGO;SAOUDI AISSA;ESSAFI HASSANE |
发明人 |
SAOUDI AISSA;ESSAFI HASSANE |
分类号 |
H04N7/12 |
主分类号 |
H04N7/12 |
代理机构 |
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地址 |
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