fix for MSVC build (OpenMP parallelized for-loop does not accept size_t variable)
Prevent undefined behaviour when drawing axis
Removement of an obsolete OpenCV dependency
Merge pull request #763 from mdkus/master

Removement of an obsolete OpenCV dependency
Merge pull request #762 from VictorLamoine/master

Prevent undefined behaviour when drawing axis
Merge pull request #753 from magro11/master

fix for MSVC build