OpenCV, CUDA, Python with Jetson Nano

[Andrey1984]

@nicola.riste
there are some reference threads:

How to using VFPv4 like NEON intrinsics on Jetson TX2 ?

Building OpenCV 3.4.6 for Xavier - is VFPV3 supported?

Hi, I have KCF tracker code whcih heavily relies on CPU rather than GPU, but I I would like to test its performance on Xavier. When building OpenCV 3.4.6, I try turn on the NEON & VFPV3 flags -D ENABLE_NEON=ON -D ENABLE_VFPV3=ON But CMAKE fails on VFPV3. The NEON flags by itself passes CMAKE. Other guides (e.g. https://github.com/jetsonhacks/buildOpenCVXavier/blob/master/buildOpenCV.sh) do not include these flags when building OpenCV. Per the public info, Carmel is a ARMv8.2 comliant vs t…