Geometric vector diagram retrieval method and system based on double-layer attribute diagram

The invention provides a geometric vector diagram retrieval method and system based on a double-layer attribute graph, and the method comprises the steps: collecting vector diagram samples, and building an index database through the vector diagram samples; receiving a to-be-retrieved vector diagram, and extracting the to-be-retrieved vector diagram to obtain geometric information; extracting to-be-retrieved features according to the geometric information, wherein the to-be-retrieved features comprise curve element features, straight line element features and spatial relation features; and calculating similarity according to the to-be-retrieved features, and matching the to-be-retrieved vector diagram with the index database to complete retrieval. According to the method, the geometric graph features are expressed more comprehensively and accurately through the geometric element features and the relation features between the geometric elements, and the retrieval efficiency and accuracy of the geometric vector