Blar i NTNU Open på forfatter "Charrier, Christophe"
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Can no-reference image quality metrics assess visible wavelength iris sample quality?
Liu, Xinwei; Pedersen, Marius; Charrier, Christophe; Bours, Patrick (Journal article; Peer reviewed, 2017)The overall performance of iris recognition systems is affected by the quality of acquired iris sample images. Due to the development of imaging technologies, visible wavelength iris recognition gained a lot of attention ... -
How re-training process affect the performance of no-reference image quality metric for face images
Liu, Xinwei; Charrier, Christophe; Pedersen, Marius; Bours, Patrick (Journal article; Peer reviewed, 2019)The accuracy of face recognition systems is significantly affected by the quality of face sample images. There are many existing no-reference image quality metrics (IQMs) that are able to assess natural image quality by ... -
Multi-modality quality assessment for unconstrained biometric samples
Liu, Xinwei (Doctoral theses at NTNU;2018:171, Doctoral thesis, 2018)The aim of this research is to investigate multi-modality biometric image quality assessment methods for unconstrained samples. Studies of biometrics noted the significance of sample quality for a recognition system or a ... -
Performance evaluation of no-reference image quality metrics for face biometric images
Liu, Xinwei; Pedersen, Marius; Charrier, Christophe; Bours, Patrick (Journal article; Peer reviewed, 2018)The accuracy of face recognition systems is significantly affected by the quality of face sample images. The recent established standardization proposed several important aspects for the assessment of face sample quality. ... -
Performance Evaluation of No-Reference Image Quality Metrics for Visible Wavelength Iris Biometric Images
Liu, Xinwei; Charrier, Christophe; Pedersen, Marius; Bours, Patrick (Chapter, 2018)Image quality assessment plays an important role in iris recognition systems because the system performance is affected by low quality iris images. With the development of electronic color imaging, there are more and more ... -
Study on color space for the performance of degraded face image recognition
Liu, Xinwei; Pedersen, Marius; Charrier, Christophe; Bours, Patrick (Journal article; Peer reviewed, 2018)Color provides important information and features for face recognition. Different color spaces possess different characteristics and are suitable for different applications. In this paper, we propose to investigate how ...