指纹汗孔采集方法研究

目的 建立采集指纹汗孔的有效方法.方法 试验了6种方法分别采集指纹各100枚,进行观察识别与比较分析.结果 采集到具备检验条件的指纹汗孔的比例：油墨法28％,油画颜料法84％,石墨法81％,活体采集仪法2％,扫描仪法11 ％,显微镜法66％.结论 油画颜料法、石墨法能够采集到清晰、完整的指纹汗孔,是采集指纹汗孔的有效方法.     

Integration of Pore Features into the Evaluation of Fingerprint Evidence*

Fingerprint practitioners rely on level 3 features to make decisions in relation to the source of an unknown friction ridge skin impression. This research proposes to assess the strength of evidence associated with pores when shown in (dis)agreement between a mark and a reference print. Based upon an algorithm designed to automatically detect pores, a metric is defined in order to compare different impressions. From this metric, the weight of the findings is quantified using a likelihood ratio. The results obtained on four configurations and 54 donors show the significant contribution of the pore features and translate into statistical terms what latent fingerprint examiners have developed holistically through experience. The system provides LRs that are indicative of the true state under both the prosecution and the defense propositions. Not only such a system brings transparency regarding the weight to assign to such features, but also forces a discussion in relation to the risks of such a model to mislead.     

关于指纹汗孔的初步研究

指纹作为法庭科学中非常重要的一种证据,它的价值已毋庸置疑。乳突纹线上的汗孔在现场纹线特别少的情况下,也可以进行人身识别。汗孔的间距、形态、数量以及单条乳突纹线上汗孔的排列等都是可以利用的特征。