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Video index establishing method and device

A technology for video indexing and building methods, applied in the fields of digital video signal modification, television, special data processing applications, etc., can solve problems such as inability to meet users' detailed and effective video query, inaccurate video result sets, and reduced user experience, etc. The effect of optimizing search results, meeting query requirements, and improving user experience

Active Publication Date: 2008-10-29
TENCENT TECH (SHENZHEN) CO LTD
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  • Summary
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AI Technical Summary

Problems solved by technology

[0005] In the above-mentioned text-based and content-based video retrieval methods, video indexes are established based on text information or specified features. Therefore, fewer parameters are considered when establishing video indexes, which cannot satisfy users for detailed and effective video queries. The video result set retrieved by the user is not accurate enough, which reduces the user experience

Method used

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  • Video index establishing method and device
  • Video index establishing method and device
  • Video index establishing method and device

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Embodiment Construction

[0058] The basic idea of ​​the present invention is to: extract the motion vitality descriptors of each video frame contained in each video shot, and train the motion vitality descriptors corresponding to the extracted multiple video shots to generate corresponding rule sets; The motion vitality descriptor corresponding to the shot is queried for the rule set, and the shot type attribute of each video shot is correspondingly obtained; a video index is established according to the shot type attribute of the video shot and the motion vitality descriptor.

[0059] In addition, the present invention also provides a method for extracting motion vitality descriptors, which includes: calculating the motion level of each macroblock in the video frame, and removing abnormally coded macroblocks in each macroblock of the video frame, and removing abnormally coded macroblocks. The same motion macroblocks in the video frame after the macroblock are aggregated to form a cluster block; then, ...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30H04N7/26H04N19/70
Inventor 袁哲
Owner TENCENT TECH (SHENZHEN) CO LTD
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