| 摘要 |
A distributed index system and method based on multi-length signature files are provided. The distributed index system includes a feature vector extracting unit, a high-dimensional index unit, a high-dimensional index managing unit. The feature vector extracting unit extracts N-dimensional feature vectors from multimedia object and identifier. The high-dimensional index unit establishes a tree-based distributed index according to the identifier of the multimedia object and the N-dimensional feature vectors, and determines a signature length by comparing number of leaf nodes of the established distributed index tree and a reference cluster size. The high-dimensional index managing unit generates signatures for each leaf node, on which the determined length is reflected, and stores the generated signatures by matching with the N-dimensional feature vectors.
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