Changing HOG

[MeraMeskul]

Algortihm contains to much C-style code. (Memory allocations, pointer arithmetics, ...) Instead of pointer based code, STL containers can be used and code can be simplified. Actually HOG part has too much C-style code instead of C++. There is code in C++ about HOG features. (https://github.com/Ekberjan/HOG_Feature_Extractor) I could not implemented that one into the algorithm. Can you integrate it to your algorithm? Thanks.