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Summary: DIRECT APPROACH TO IMAGE EDGE
DETECTION USING DIFFERENTIATORS
Mohamad Adnan Al-Alaoui
Department of Electrical and Computer Engineering
American University of Beirut
Beirut, Lebanon
e-mail: adnan@aub.edu.lb
Abstract-- This work addresses employing a direct approach to
edge detection without using masks. In the process it introduces
two novel ideas, the direct approach and using IIR
differentiators. Traditional edge detection relies on mask edge
detectors based on FIR differentiators. The masks have to be
small, thus the masks are based on low order FIR differentiators.
It is well known that IIR digital filters outperform the same
order FIR filters. Several differentiators are employed. The
results show the superiority of the new approach.
Keywords- Al-Alaoui operator, Edge detection, Sobel operator,
central difference differentiator
I. INTRODUCTION
Digital integrators and differentiators are important
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