Edge detection algorithm for omnidirectional images, based on superposition laws on Blach’s sphere and quantum entropy

Ayoub Ezzaki, Dirar Benkhedra, Mohamed El Ansari, Lhoussaine Masmoudi


This paper presents an edge detection algorithm for omnidirectional images based on superposition law on
Bloch’s sphere and quantum local entropy. Omnidirectional vision system has become an essential tool in
computer vision, duo to its large field of view. However, classical image processing algorithms are not suitable to be applied directly in this type of images without taking into account the spatial information around each pixel. To show the performance of the proposed method, a set of experimentation was done on synthetic and real images devoted to agriculture applications. Later, Fram & Deutsh criterion has been adopted to evaluate its performance against three algorithms proposed on the literature and developed for omnidirectional images. The results show a good performance of the proposed method in term of edge quality, edge community and sensibility to noise.


Edge detection; Omnidirectional images; Quantum image processing; Quantum entropy;

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Copyright (c) 2021 Ayoub Ezzaki, Dirar Benkhedra, Lhoussaine Masmoudi