Face recognition: A literature survey
ACM Computing Surveys (CSUR)
Measure of image sharpness using eigenvalues
Information Sciences: an International Journal
IEEE Transactions on Image Processing
Standardization of face image sample quality
ICB'07 Proceedings of the 2007 international conference on Advances in Biometrics
Quality-based conditional processing in multi-biometrics: application to sensor interoperability
IEEE Transactions on Systems, Man, and Cybernetics, Part A: Systems and Humans
Focusing in thermal imagery using morphological gradient operator
Pattern Recognition Letters
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Face recognition performance can be significantly influenced by face image quality. The approved ISO/IEC standard 19794-5 has specified recommendations for face photo taking for E-passport and related applications. Standardization of face image quality, ISO/IEC 29794-5, is in progress. Bad illumination, facial pose and out-of-focus are among main reasons that disqualify a face image sample. This paper presents several algorithms for face image quality assessment. Illumination conditions and facial pose are evaluated in terms of facial symmetry, and implemented based on Gabor wavelet features. Assessment of camera focus is done based on discrete cosine transform (DCT). These methods are validated by experiments.