"Seriously, though - since I will likely be using the same library from ST - is that a line of code I can search for in their library, or did you add it?"
"Damn! I don't qualify to use OpenCV either...
Kudos on your USB debugging, and cool to see someone using the STM32 F400's - I am interested in those also, but minor bone to pick with your description of the issue and your code-