A scanning beam time-resolved imaging system for fingerprint detection.

作者: Robert D. Roorda , Alfonso C. Ribes , Savvas Damaskinos , A.E. (Ted) (Ted) Dixon , E. Roland Menzel

DOI: 10.1520/JFS14729J

关键词:

摘要: A highly sensitive confocal scanning-beam system for time-resolved imaging of fingerprints is described. Time-resolved a relatively new forensic procedure the detection and latent on fluorescent substrates such as paper, cardboard, paint. Ordinary these surfaces results in poor contrast. Instead, specimens are treated with phosphorescent dye that preferentially adheres to fingerprint which allows discrimination between phosphorescence background fluorescence. Time resolved images obtained by synchronizing digital sampling specimen luminescence on-off cycle chopped illumination beam. The merit this technique illustrated high contrast from painted surface Coke™ can.

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