producing output CSV results for full pyra. buggy...need to make sure the PgHogContainers are allocated on the heap.
switched to PgHogContainer pointers. also, made PgHogContainer a class instead of a struct.
fixing a few bugs introduced by replacing PgHogContainer with PgHogContainer*. still getting a segfault when dereferencing the containers outside of extract_HOG_1level()
doiii, forgot to return hogResult
place features
testing hog transpose and other file i/o stuff
matlab format hog -> c++ format -> flatten to 2d -> csv -> ... -> back to matlab format hog. works.