Method for three-dimensional forensic signature analysis for use in determining writing sequence, e.g. at cross points which stroke or line overlays the other, writing implement used, signature age, etc.

摘要

Method has the following steps: selection (30) of a section of the signature to examine, scanning (32) of the selected area using a light beam in a number of planes, blocking off (34) of light not originating from the focussed region, planar detection (36) of light from the focal region and production (38) of a 3-D depiction of the focal region using the detected data. The invention also relates to a device for use with the above method having a light source, shutters, microscope optics, beam deflector and multi-band detection optics.