title: Recovery of spray paint traces from clothing by beating.
abstract: Manual recovery of spray paints from textiles using a microscope, the routine method in many laboratories, is often laborious. Beating the clothing with a plastic rod, the routine method used for recovery of glass traces within the authors' laboratory, is proposed as an alternative. The efficiency of the method was evaluated by spray tests with fluorescent paint. In these tests, paint particles in the acquired debris samples, as well as those remaining on the textiles, were investigated. The results show that beating is an efficient way to recover and concentrate paint particles. A good efficiency for jeans fabric and rough knitwear is reported. The results appeared to be less satisfactory for smooth woven fabric. Application of the method in casework was effective for graffiti paints as well as for flaked car paint.
authors.affiliation: Department of Microtraces, Netherlands Forensic Institute, PO Box 24044, 2490AA, The Hague, The Netherlands.
authors.forename: Maurice
authors.initials: M
authors.lastname: Olderiks
authors.forename: Martin
authors.initials: M
authors.lastname: Baiker
authors.forename: Jill
authors.initials: J
authors.lastname: van Velzen
authors.forename: Jaap
authors.initials: J
authors.lastname: van der Weerd
keywords: auto image processing; burglary; fluorescence microscopy; forensic science; graffiti; hit-and-run; image stitching; recovery; segmentation; spray paint