The story goes that OpenCV was originally developed by Intel.
If you check OpenCV faq , they will say:
OpenCV itself is open source and written in fairly portable C / C ++, it already works on other processors and should be fairly portable (for example, NVidia already has some CUDA optimizations. On the other hand, OpenCV can sometimes work much faster on Intel processors (and sometimes on AMD) because they can take advantage of SSE optimization.OpenCV can be statically compiled using Intel's IPP libraries, which can speed up some features.
I used it on other processors and different OSs, and I was always very pleased, including for video processing applications.