VALUABLE DOCUMENT IDENTIFICATION METHOD AND SYSTEM

摘要

A valuable document identification method and system are provided. The method comprises, detecting features in different space ranges of a valuable document, and obtaining multi-source information Ω={Xi, Xj, . . . , Xn}, wherein Xi∩Xj≠φ, or Xi∩Xj≠φ and Xi<=>Xj; labeling the space position of Xj with Xi according to semantic constraints of Xi and Xj, and obtaining position constraints Ψij(x, y); extracting a characteristic value fi from Xi, and extracting a characteristic value fj from Xj according to the position constrains Ψij(x, y); determining whether fi, fj meet the characteristic criteria of the valuable document, if yes, then receiving the valuable document, or else, rejecting the valuable document. The method enables improved reliability and robustness of the valuable document identification system.

主权项

1. A method for identifying valuable document, comprising:
S1. detecting characteristics of the valuable document in different spatial scales to obtain multi-source information Ω={Xi, Xj, . . . , Xn}, wherein Xi indicates the characteristic in the i-th space scale, Xj indicates the characteristic in j-th space scale, 1≦i≦n, 1≦j≦n, and i≠j; semantic constraints on Xi and Xj are: Xi∩Xj≠φ; S2. determining a spatial location of Xj by using Xi to obtain a location constraint Ψij(x,y) according to the semantic constraints on Xi and Xj; S3. extracting a feature value fi from the Xi; and extracting a feature value fj from the Xj according to the location constraint Ψij(x,y), checking whether fi and fj conform to the semantic constraint on Xi and Xj, determining that fi and fj are legal if yes; else outputting a rejection identification wherein fi is an optimal characteristic of the i-th spatial scale, and fj is an optimal characteristic of the j-th spatial scale; and S4. judging whether fi and fj conform to a characteristic standard of the valuable document; outputting the reception identification to receive the valuable document if yes; else outputting the rejection identification to reject the valuable document.