AFTE Store - Validation of the Linescan Imaging Technique for Imaging Cylindrical Forensic Ballistics Specimens

The imaging of cylindrical surfaces of forensic ballistics specimens with an area camera system requires the geometric registration of a number of different images in order to effect a 360+ view of its surface. This view is very difficult to achieve in terms of consistent spatial resolution. A line-scan imaging technique utilising an area array camera producing images of rotating ballistics specimens is described. A discussion of the validity of the technique to use the images for the identification of firearms is presented. The 2-D planar images of complete 3-D cylindrical surfaces produced by the linescan technique have a geometric format that is particularly suited to morphological image processing and the production of image databases.