Approaching real time dynamic signature verification from a systems and control perspective.

dc.contributor.authorGu, Yi
dc.date.accessioned2006-10-31T08:35:35Z
dc.date.available2006-10-31T08:35:35Z
dc.date.issued2006-10-31T08:35:35Z
dc.descriptionStudent Number : 9901877H MSc Dissertation School of Electrical and Information Engineering Faculty of Engineering and the Built Environmenten
dc.description.abstractalgorithm. The origins of handwriting idiosyncrasies and habituation are explained using systems theory, and it is shown that the 2/3 power law governing biomechanics motion also applies to handwriting. This leads to the conclusion that it is possible to derive handwriting velocity profiles from a static image, and that a successful forgery of a signature is only possible in the event of the forger being able to generate a signature using natural ballistic motion. It is also shown that significant portion of the underlying dynamic system governing the generation of handwritten signatures can be inferred by deriving time segmented transfer function models of the x and y co-ordinate velocity profiles of a signature. The prototype algorithm consequently developed uses x and y components of pen-tip velocity profiles (vx[n] and vy[n]) to create signature representations based on autoregression-with-exogenous-input (ARX) models. Verification is accomplished using a similarity measure based on the results of a k-step ahead predictor and 5 complementary metrics. Using 350 signatures collected from 21 signers, the system’s false acceptance (FAR) and false rejection (FRR) rates were 2.19% and 27.05% respectively. This high FRR is a result of measurement inadequacies, and it is believed that the algorithm’s FRR is approximately 18%.en
dc.format.extent2406244 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/10539/1514
dc.language.isoenen
dc.subjectdynamic structure verificationen
dc.subjecttwo thirds power lawen
dc.subjectbiometricsen
dc.subjecthandwritingen
dc.subjectpattern recognitionen
dc.subjectclassificationen
dc.subjectmodellingen
dc.titleApproaching real time dynamic signature verification from a systems and control perspective.en
dc.typeThesisen
Files
Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
YiGu_Masters_Dissertation.pdf
Size:
2.29 MB
Format:
Adobe Portable Document Format
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
87 B
Format:
Item-specific license agreed upon to submission
Description:
Collections