Objective paper structure comparison: Assessing comparison algorithms

被引:7
作者
Berger, Charles E. H. [1 ,2 ]
Ramos, Daniel [3 ,4 ]
机构
[1] Netherlands Forens Inst, NL-2490 AA The Hague, Netherlands
[2] Leiden Univ, NL-2300 RA Leiden, Netherlands
[3] Univ Autonoma Madrid, ATVS Biometr Recognit Grp, E-28049 Madrid, Spain
[4] Univ Autonoma Madrid, Res Inst Forens Sci & Secur ICFS, E-28049 Madrid, Spain
关键词
Forensic science; Questioned documents; Paper structure; Fourier analysis; Information theoretical analysis; Empirical Cross-Entropy;
D O I
10.1016/j.forsciint.2012.07.018
中图分类号
DF [法律]; D9 [法律]; R [医药、卫生];
学科分类号
0301 ; 10 ;
摘要
More than just being a substrate, paper can also provide evidence for the provenance of documents. An earlier paper described a method to compare paper structure, based on the Fourier power spectra of light transmission images. Good results were obtained by using the 2D correlation of images derived from the power spectra as a similarity score, but the method was very computationally intensive. Different comparison algorithms are evaluated in this paper, using information theoretical criteria. An angular invariant algorithm turned out to be as effective as the original one but 4 orders of magnitude faster, making the use of much larger databases possible. (C) 2012 Elsevier Ireland Ltd. All rights reserved.
引用
收藏
页码:360 / 367
页数:8
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