Giuseppe Schirripa Spagnolo et al 2004 J. Opt. A: Pure Appl. Opt. 6 869 doi:10.1088/1464-4258/6/9/009
Superposed strokes analysis by conoscopic holography as an aid for a handwriting expert
Giuseppe Schirripa Spagnolo, Carla Simonetti and Lorenzo Cozzella
Show affiliationsFor legal purposes there is a requirement for the validation of signatures and handwritten documents. A helpful method in this respect is the so-called superposed strokes analysis, based on the observation of some characteristics in the writing, such as some letters and their dynamics.
This paper introduces a promising new technique for superposed strokes analysis based on conoscopic holography. Through a non-contact 3D measure a 3D profile is created of the superposed strokes that allows the writing dynamics to be determined, such as, for example, if a stroke was drawn clockwise or counterclockwise.
We propose a 3D analysis by an opto-electronic system, in order to improve the graphology analysis for off-line signature verification.
- PACS
-
42.40.Kw Holographic interferometry; other holographic techniques
06.30.Bp Spatial dimensions (e.g., position, lengths, volume, angles, and displacements)
- Subjects
- Dates
-
Issue 9 (September 2004)
Received 5 January 2004, accepted for publication 27 July 2004
Published 10 August 2004
-
Superposed strokes analysis by conoscopic holography as an aid for a handwriting expert
Giuseppe Schirripa Spagnolo et al 2004 J. Opt. A: Pure Appl. Opt. 6 869
-
Modelled current distribution in cervical squamous tissue
D C Walker et al 2002 Physiol. Meas. 23 159
-
Poly-HEMA as a drug delivery device for in vitro neural networks on micro-electrode arrays
Alex J Cadotte and Thomas B DeMarse 2005 J. Neural Eng. 2 114
-
Analysis of the coagulation of human blood cells on diamond surfaces by atomic force microscopy
V Baranauskas et al 2004 Nanotechnology 15 1661
-
The Hartley transform applied to particle image velocimetry
Hequan Sun 2002 Meas. Sci. Technol. 13 1996
-
Electron paramagnetic resonance study of
at 
position in forsterite
J-M Gaite and H Rager 1997 J. Phys.: Condens. Matter 9 10033
-
A computer controlled flow phantom for generation of physiological Doppler waveforms
P R Hoskins et al 1989 Phys. Med. Biol. 34 1709
-
Towards an ideal blood analogue for Doppler ultrasound phantoms
C P Oates 1991 Phys. Med. Biol. 36 1433
-
Grazing-angle ion-induced electron excitation at metal surfaces
C Rau and N J Zheng 1993 J. Phys.: Condens. Matter 5 A249
-
Brownian motion in a modulated optical trap
Yi Deng et al 2007 J. Opt. A: Pure Appl. Opt. 9 S256