Audio-visual content retrieval method and system

Abstract

The invention discloses an audio-visual content retrieval method. The method comprises the steps of obtaining audio-visual original data; packaging the audio-visual original data into an audio-visualfile according to a specific format, and storing the audio-visual file in a file library; performing identification processing on the audio-visual original data, and outputting an identification text;obtaining description information and a timestamp corresponding to the recognition text; packaging the path information, the identification text, the description information and the timestamp of theaudio-visual file into a comparison data body, and storing the comparison data body in a database; and obtaining a user retrieval request, judging whether the retrieval request is matched with the comparison data volume in the database or not, if so, calling the audio-visual file corresponding to the comparison data volume, and skipping to play the audio-visual file. Correspondingly, the inventiondiscloses an audio-visual content retrieval system. By adopting the method and the device, the retrieval comparison database is established according to the recognition text of the audio-visual original data and the corresponding timestamp, so that the retrieval efficiency can be improved, and different retrieval preferences can be met.

Description

technical field [0001] The present invention relates to data retrieval technology, in particular to an audio-visual content retrieval method and system Background technique [0002] With the rapid development of multimedia technology and network technology, people's learning forms are diversified. Among them, teaching video breaks the limitation of time and space, making it convenient for students to learn at any time and place, and it is becoming easier to obtain and disseminate, and has gradually become one of the main carriers of teaching resource dissemination. At present, the number of instructional videos is also increasing rapidly. Therefore, effective retrieval of teaching videos has an important impact on improving learning efficiency. [0003] Traditional video retrieval methods include retrieval methods based on text identifiers and retrieval methods based on content. Among them, the retrieval method based on text identifiers is to manually add text identifiers...

AI Technical Summary

Problems solved by technology

[0005] The retrieval method based on text identifiers needs to manually add text identifiers to the video before searching, which has a huge workload and low efficiency

The retrieval method based on the text identifier cannot retrieve the content in the video, and it is easy for the user to miss the video that meets the search requirements

This retrieval method requires the user to manually drag the progress to view a certain key knowledge point, which is inconvenient for the user to use the teaching video

[0006] The content-based video retrieval method is mainly used in the video playback of security monitoring. It can only search the index established based on the video characteristics, and the part without the index cannot be searched. This method is not suitable for application in the teaching video application platform, because different Users are interested in different parts of the same video, it is difficult to index in advance

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