Robust Facial Recognition System using One Shot Multispectral Filter Array Acquisition System

Abstract

Face recognition in the visible and Near Infrared range has received a lot of attention in recent years. The current Multispectral (MS) imaging systems used for facial recognition are based on multiple cameras having multiple sensors. These acquisition systems are normally slow because they take one MS image in several shots, which makes them unable to acquire images in real time and to capture moving scenes. On the other hand, currently there are snapshot multispectral imaging systems which integrate a single sensor with Multispectral Filter Arrays (MSFA) allow having at each acquisition an image on several spectra. These systems drastically reduce image acquisition time and are able to capture moving scenes in real time. This paper proposes a study of robust facial recognition using Multispectral Filter Array acquisition system. For this goal, a MSFA one-shot camera was used to collect the images and a robust facial recognition method based on Fast Discrete Curvelet Transform and Convolutional Neural Network is proposed. This camera covers the spectral range from 650 nm to 950 nm. A comparison of the facial recognition system using Multispectral Filter Arrays camera is made with those that using multiple cameras. Experimental results proved that face recognition systems whose acquisition systems are designed using MSFA perform more efficiently with an accuracy of 100%.

Design and Development of Large-Band Dual-MSFA Sensor Camera for Precision Agriculture

“…Hybridation is the assembly process of the MSFA on the CMOS sensor. This assembly brings about difficulties which have been observed in previous projects [ 43 ]. The most important problem is crosstalk, which stands for the misplacement of filter units on the image sensor pixels.…”

Comparison of Four Demosaicing Methods for Facial Recognition Algorithms

“…MSFA one-shot cameras solve the problems associated with conventional multispectral cameras, which are the heaviness and slowness during the acquisition of multispectral images. MSFA one-shot cameras are used in several fields such as agriculture, medical imaging, and pattern recognition [9]- [12].…”