Imaging Science and Photochemistry ›› 2019, Vol. 37 ›› Issue (6): 507-514.DOI: 10.7517/issn.1674-0475.190604

• Review and Articles • Previous Articles     Next Articles

Research on Quantifying the Selectivity of Fingerprint Development

YU Haifeng1, SHEN Dunpu1, JU Jinsheng1, WANG Meng1,2   

  1. 1. Department of Trace Examination, National Police University of China, Shenyang 110035, Liaoning, P. R. China;
    2. Key Laboratory of Impression Evidence Examination and Identification Technology, Ministry of Public Security, Shenyang 110035, Liaoning, P. R. China
  • Received:2019-06-14 Online:2019-11-15 Published:2019-11-15

Abstract: This work aims to propose a quantitative method for calculating the selectivity in latent fingerprint development, and discuss the effect factors of the developing selectivity. Firstly, the gray value curve of developed fingerprint image was obtained from Image J software. The gray value curve was then analyzed by means of Origin software. The developing selectivity was ultimately derived by the ratio of integrated peaks (friction ridges) to integrated valleys (furrows) in gray value curve. This method was tested and verified to be feasible through the super glue fuming method and Amino black 10B method. In addition, the effects of developing reagents and substrate properties on the fingerprint developing selectivity were investigated. This work provides beneficial references for quantitative evaluating the result especially the selectivity of latent fingerprint development.

Key words: latent fingerprint, fingerprint development, selectivity, quantification