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* Make OpenBR compatible with OpenCV 4.X (tested with 4.5.1). There is a loss in functionality with this port. See TODO.md for outstanding issues * Add ForestInductionTransform back into forest.cpp * Add boost back in to OpenBR. This was difficult because OpenCV 4 dropped the C persistence layer, which all of the boost classes use. The new 3rdparty/opencv2-compat directory adds the C persistence layer back in, along with the old OpenCV ML classes that were removed for 4.X * Add boosted forest plugin back in * Freeing memory only leads to terrible consequences! Both of these cases caused double frees when the pointers were freed. This solution definitely has a memory leak during training, but it does work * Add InputOutputArray operator * Properly print matrices with newlines * Bug fixes * opencv still defines these * updated module dependencies * bump eigen to fix compile error * opencv ios lib location has changed * sift now part of features2d Co-authored-by: Jordan Cheney <jordan@rankone.io> Co-authored-by: Scott Klum <scott@rankone.io> Co-authored-by: Josh Klontz <josh@rankone.io>
