Face liveness detection based on IQA using anova feature selection
In the past few decades, there has been a growing interest in Facial Biometric systems that became a trend in a wide range of technologies like security, access control and surveillance applications. However, Spoof attacks remain the main challenge faced by facial biometric systems. A spoof attac...
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| Main Author: | |
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| Format: | Thesis |
| Language: | English |
| Published: |
2019
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| Subjects: | |
| Online Access: | http://psasir.upm.edu.my/id/eprint/77614/1/FK%202019%2015%20ir.pdf http://psasir.upm.edu.my/id/eprint/77614/ |
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| Summary: | In the past few decades, there has been a growing interest in Facial Biometric systems
that became a trend in a wide range of technologies like security, access control and
surveillance applications. However, Spoof attacks remain the main challenge faced by
facial biometric systems. A spoof attack arises when an individual attempt to disguise
as someone else by a fake face to get an unauthorized access to the system, a fake face
could be a photograph, dummy face or even a video display. To overcome these
attacks on such systems, face liveness detection has been produced.
There are various ways to detect the face liveness such by texture, motion analysis,
determine a scenic clue or by using a thermal sensor. Two methods of detection were
identified based on the necessity of user’s cooperation with the system. One is known
as intrusive which requires user interaction with the system such in motion detection
and the other is non-intrusive were no user effort is needed. For this purpose, image
quality assessment has been utilized in the literature for face anti-spoofing detection.
Image quality measures (IQMs) are efficient, user friendly, non-intrusive, low cost
and present a low degree of complexity in implementation. However, they exhibit
some limitations in terms of accuracy and efficiency of the system. Thus, an effective face liveness detection system based on image quality measures has
been proposed in this thesis. The system was designed to conquer the limitations of
accuracy in a trade off with high and cost ineffective feature extractor. System’s
effectiveness was evaluated and benchmarked with other existing related work on
CASIA face anti-spoofing database and the expandability of proposed work was
further proven on NUAA imposter database. The feature set was selected based on IQMs discrimination power. Analysis of
variance (ANOVA) was the statistical tool used to identify these IQMs. ANOVA was
applied to find the p-value and F-score for each of the measures. A low p-value (high
F score) for a test refers to an evidence to reject the null hypothesis. Then a feature
selection strategy was further implemented to minimize the number of measures. The
output measures have been employed as a feature extractor to design and develop the
face liveness detection system. Image classification for real and fake samples was
implemented by support vector machine (SVM). The system is restricted to 2D
images.
The test results and evaluations have been implemented by the statistical analysis
testing and by liveness detection system in terms of accuracy, half total error rate
(HTER) and system’s efficeincy. Results have consistently revealed that the proposed
method outperforms other detection techniques over different types of spoofing
attacks and mediums. The detection accuracy of the system was increased by nearly
13% while the computational load was decreased by approximately 50 % as compared
to the state-of-art. The contribution of this work is to ensure the simplicity of detection
system and improves its accuracy along with efficiency. |
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