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Two-wavelength phase shift interferometry to characterize ballistic features
- Source :
- SPIE Proceedings.
- Publication Year :
- 2014
- Publisher :
- SPIE, 2014.
-
Abstract
- We apply two-wavelength phase shifting interferometry to generate 3D surface profile maps of spent bullet cartridge cases. From the captured interferograms, an optimized algorithm was used to calculate a phase profile from which a precise digital surface map of the cartridge casing may be produced. This 3D surface profile is used to enhance a firearms examiner's ability to uniquely identify distinct features or toolmarks imprinted on the casing when the weapon is fired. These features play a key role in the matching process of ballistic forensic examination.
Details
- ISSN :
- 0277786X
- Database :
- OpenAIRE
- Journal :
- SPIE Proceedings
- Accession number :
- edsair.doi...........bb3aae12d17bd14de32f8a2af8c991f8