1. CNRS ESYCOM UMR 9007, Noisy-le-Grand, ESIEE, Université Gustave Eiffel, Paris 93162, France
2. Si-Ware Systems, 3 Khalid Ibn Al-Waleed Street, Heliopolis, Cairo 11361, Egypt
3. Faculty of Engineering, Ain-Shams University, 1 Elsarayat Street, Abbassia, Cairo 11535, Egypt
4. Faculty of Information Engineering and Technology, Laboratory of Micro Optics, German University in Cairo, Cairo 11835, Egypt
5. School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore