Honestly I don't know enough about ITK to compare it to VW. VW's original developers just wanted to make a cool way of doing lazy image evaluation. This is its

Honestly I don't know enough about ITK to compare it to VW. VW's original developers just wanted to make a cool way of doing lazy image evaluation. This is its primary difference compared to OpenCV. VW leverages that ability to handle really large images (1+ GB) and to do multithreaded rasterization. Saying VW was created because of "Not Invented Here" is a little harsh. It is mostly just a fun exercise of CRTP that grew into a supporting library. Is this the best library for you? That depends. In my opinion, VW's strength at the moment is cartographic applications.