Éditeur(s) : HAL CCSD
Résumé : International audience
This paper examines the historical signatures of 18th century composer, J. S. Bach, to evaluate the effects of vision impairment on handwritten signatures. It is questioned whether Bach penned certain signatures as it is historically documented that he was virtually blind in the years just prior to his death in 1750. Applying information collected from published forensic studies about the effects of vision impairment on handwriting, handwriting indices of vision impairment are compared to Bach's signatures in the late 1740s.
17th Biennial Conference of the International Graphonomics Society
Pointe-à-Pitre, Guadeloupe

hal-01165902
https://hal.univ-antilles.fr/hal-01165902
https://hal.univ-antilles.fr/hal-01165902/document
https://hal.univ-antilles.fr/hal-01165902/file/IGS_2015_submission_25.pdf

Éditeur(s) : HAL CCSD
Résumé : International audience
This paper presents an experimental investigation on stability and complexity of dynamic signatures. A technique based on multiple matching strategies using Dynamic Time Warping is considered to derive both stability and complexity information from dynamic signatures. The experimental results, carried out on signatures of the SUSIG database, highlight some interesting characteristics on handwritten signatures.
17th Biennial Conference of the International Graphonomics Society
Pointe-à-Pitre, Guadeloupe

hal-01165912
https://hal.univ-antilles.fr/hal-01165912
https://hal.univ-antilles.fr/hal-01165912/document
https://hal.univ-antilles.fr/hal-01165912/file/IGS_2015_submission_29.pdf

Éditeur(s) : HAL CCSD
Résumé : International audience
Advances in technology and scientific development in forensic handwriting examination (FHE) require a review in response to the challenges published in the NAS Report. This survey summarizes the advances made in theoretical and methodological approaches to handwriting examination including a review of research on the proficiency of FHEs. Technology has impacted FHE including analysis of e-signatures and use of technology for signature and handwriting authentication. A review of legal cases in the U.S. confirms how research and technological advances have met legal challenges and impacted decisions in the courtroom.
17th Biennial Conference of the International Graphonomics Society
Pointe-à-Pitre, Guadeloupe

hal-01165905
https://hal.univ-antilles.fr/hal-01165905
https://hal.univ-antilles.fr/hal-01165905/document
https://hal.univ-antilles.fr/hal-01165905/file/IGS_2015_submission_26.pdf

Éditeur(s) : HAL CCSD
Résumé : International audience
Handwritten signatures are considered one of the most useful biometric traits for personal verification. In the networked society, in which a multitude of different devices can be used for signature acquisition, specific research is still needed to determine the extent to which features of an input signature depend on the characteristics of the signature apposition process. In this paper an experimental investigation was carried out on constrained signatures, which were acquired using writing boxes having different area and shape, and the different behaviour of dynamic features with respect to the writing boxes are discussed.
17th Biennial Conference of the International Graphonomics Society
Pointe-à-Pitre, Guadeloupe

hal-01165894
https://hal.univ-antilles.fr/hal-01165894
https://hal.univ-antilles.fr/hal-01165894/document
https://hal.univ-antilles.fr/hal-01165894/file/IGS_2015_submission_23.pdf