Video index establishing method and device

Abstract

The invention provides a video index establishing method, comprising the following steps: A1, motion activity descriptors of all video frames which are contained in all video lenses are extracted, the motion activity descriptors which are corresponding to a plurality of video lenses and are obtained by extraction are trained, thus generating a corresponding rule set; B1, the rule set is queried according to the motion activity descriptors which are corresponding to the various video lenses, thus obtaining the corresponding type attributes of the lenses of the various video lenses; C1, a video index is established according to the type attributes of the lenses of the video lenses and the motion activity descriptors. The invention simultaneously provides a video index establishing device, an extraction method and a device of the motion activity descriptors, which can meet the delicate and the effective query requirements of a user and improve the user experience.

Description

technical field

[0001] The invention relates to video retrieval technology, in particular to a video index establishment method and device. Background technique

[0002] With the development of multimedia technology, the amount of video information expands rapidly, and video retrieval technology emerges as the times require.

[0003] Video retrieval includes traditional text-based video retrieval and content-based video retrieval. In text-based video retrieval, firstly, on the search engine side, the text information in the saved video is extracted, and a video index is established; then, when the user needs to perform video retrieval, the search engine searches the video from the video according to the text-type keywords submitted by the user. Find the most similar video result set in the index. In content-based video retrieval, firstly, on the search engine side, the specified features in the saved video, such as color, texture, motion mode, etc., are extracted to establ...

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