Towards Unconstrained Face Recognition Using 3D Face Model
Zahid Riaz, M. Saquib, Michael Beetz · InTech eBooks · 2011
Will-be-set-by-IN-TECHBy nature, face recognition systems are widely used due to high universality, collectability and acceptability.However this attribute has natural challenges like uniqueness, performance and circumvention.Although several commercial biometrics systems use face recognition as a key tool but most of them perform in constrained environment.Real world challenges to face recognition problems involve varying lighting, poses, facial expressions, aging effects, occlusions which also include make up, facial scars or cuts, facial hairs, low resolution images and most recently spoofing.Due to their non intrusiveness faces are the most important biometrics to be employed in real life systems.Figure 1 shows the contribution of the face recognition system in biometrics market.Over the last decade, faces have been consistently used after the usage of fingerprints and AFIS (automated fingerprints identification system)/live scans.Face recognition finds its major applications in document classification, security access control, surveillance, web application and human robot interaction.However fingerprints can easily be spoofed (research is still in progress to deal with this issue using live scans), intrusive, aging effects are more in the sense of damages and finally template security and updation issues.