An Algorithm for Detecting Bills′ Watermarks Based on Prior Information and Multi-template Matching
| Autor: | 陈章永 Chen Zhang-yong, 程永茂 Cheng Yong-mao, 刘通 Liu Tong, 谢剑斌 Xie Jian-bin |
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| Rok vydání: | 2010 |
| Předmět: |
Matching (graph theory)
Computer science business.industry Template matching Data_MISCELLANEOUS ComputingMilieux_LEGALASPECTSOFCOMPUTING Pattern recognition Watermark Atomic and Molecular Physics and Optics Object detection Position (vector) Probability of error Artificial intelligence business Algorithm Prior information Blossom algorithm |
| Zdroj: | ACTA PHOTONICA SINICA. 39:1706-1711 |
| ISSN: | 1004-4213 |
| DOI: | 10.3788/gzxb20103909.1706 |
| Popis: | In order to reduce false-positive error probability and false-negative error probability for bills′ watermarks detection, an algorithm based on prior information and multi-template matching is proposed. By means of stepped-matching idea, it selects initial watermark template and uses single-template matching algorithm to find the approximate position of initial watermark template firstly. Secondly, it uses prior information to calculate watermarks′ scattering region. Thirdly, it uses multi-template matching algorithm to detect watermarks in the scattering region. Finally, it uses prior information to check the watermarks′ position that been detected, and to estimate the watermarks′ position that not been detected. The experiments show that the new algorithm can reduce the false-positive error probability and false-negative error probability, and it is effective to detect bills′ watermarks. |
| Databáze: | OpenAIRE |
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