Multimedia information retrieval method and system

Abstract

The invention discloses a multimedia information searching method and system. The method includes the steps of extracting feature data of current multimedia information, obtaining a feature bit vector of the current multimedia information according to the extracted feature data, segmenting the feature bit vector of the current multimedia information to obtain k sub-vectors of the current multimedia information, determining a candidate set corresponding to each sub-vector according to each sub-vector of the current multimedia information, finding out a feature bit vector, corresponding to each vector identification in each obtained candidate set, in a multimedia feature database, calculating hamming distances between the feature bit vector of the current multimedia information and the found feature bit vectors, and outputting the multimedia information, corresponding to the feature bit vectors with the hamming distances conforming to a preset condition, as a search result. Through the method and due to the fact that a segmentation index structure is set up to search the feature bit vectors, the searching speed of the multimedia information and the searching efficiency of the multimedia information can be greatly improved.

Description

technical field [0001] The invention relates to the computer field, in particular to a multimedia information retrieval method and system. Background technique [0002] In recent years, with the rapid development of multimedia technology and computer technology, large-scale multimedia information appears more and more in many research and application fields. In order to effectively access and utilize the information contained in these huge and complex data, the traditional text-based retrieval technology has been unable to meet the growing needs of users, and the content-based retrieval technology has emerged as the times require. [0003] The content-based retrieval method needs to extract the characteristic data of multimedia to establish a characteristic database, and then convert the retrieval of multimedia information into the neighbor retrieval of characteristic data. For large-scale multimedia information, its feature data is also large-scale. This requires an appro...

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Problems solved by technology

[0016] However, the inventors of the present invention have found that the retrieval speed of the above-mentioned multimedia information retrieval method still cannot meet the requirements of the retrieval speed when the system faces a large number of retrieval requirements; therefore, it is necessary to provide a faster and more efficient multimedia information retrieval method. information retrieval method

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