This chapter will explore some of the limitations and difficulties which may be experienced specifically in the investigation and analysis of physical ageing issues in biometric systems. Considerable advances have been made in recent years by researchers seeking to investigate and explore the physical ageing process and its effects on most of the common biometric modalities such as iris, signature, fingerprint, voice and face. However, there are several significant problems which can limit a comprehensive age progression analysis in studying ageing effects, and which indeed can also lead to apparently inconsistent conclusions about the effect of age progression on performance. Thus, in this chapter, some of the most important limitations which challenge research in this area will be investigated and explored, while some suggestions will also be presented about how to manage these issues in the analysis of physical ageing in biometric systems.
Analysis of ageing effects in biometric systems: difficulties and limitations, Page 1 of 2
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