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This paper proposes a new algorithm for fitting a 3D morphable face model on low-resolution (LR) facial images. We analyse the criterion commonly used by the main fitting algorithms and by comparing with an image formation model, show that this criterion is only valid if the resolution of the input image is high. We then derive an imaging model to describe the process of LR image formation given the...
As biometric technology is rolled out on a larger scale, it will be a common scenario (known as cross-device matching) to have a template acquired by one biometric device used by another during testing. This requires a biometric system to work with different acquisition devices, an issue known as device interoperability. We further distinguish two subproblems, depending on whether the device identity...
In video based face recognition, faces typically experience challenging illumination conditions, blur, or localisation errors in several frames. To alleviate these challenges, quality measures can be used to remove the most severely degraded frames. Still, when the videos are taken in real life settings, degradations are likely to be present even in the highest quality frames, and robust recognition...
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