Researchers need multiple frameworks because the feature sets aren&#x27;t the same in each.<p>I haven&#x27;t done anything with deep learning, but I worked in a research lab with others who did.  On the image processing side, we prototyped code in OpenCV, both with Python and C++, and MATLAB (with toolboxes) regularly because of this.<p>At the end of the day they have a limited amount of time and just want to test their idea the fastest way they can.