Weak edges that turned into strong edges were not added to the list of edges.

Check if C++ standard is greater or equal to C++11 before calling createDisplay, otherwise call allocateDisplay and free the memory at the end of the program

…ORE] Added test of edge-list feature

The software arguments management was a bit messy, so introduced a structure holding all the parameters

Introduced a test function to ensure that the edge-list correctly reflect the Canny output image

Throw an exception when the Canny's ratio are outside the expected boundaries

Ensure that lower ratio < upper ratio

[FIX] Removed percentage symbol

[CORE] Added check notFOund in OpenCV implem

…k size

[CORE] Made the minimum stack size used in the detect method of the vpCannyEdgeDetection class an attribute that the user can either decrease or increase to meet their requirements.

[DOC]  Documented the fact that the stack size can lead to a segfault when the method is called for particular images and the specificities of each platform