Jetson Nano ISP and libargus


I need to capture images via CSI camera and doing some preprocessing using libargus. I need the answers of following questions ?

How many ISP does nano have ?
How many cameras does nano stream simultaneously ?
What algoritm is used for face detection extension of libargus ?

  1. Nano have 2 ISP HW core.
  2. Nano can support to 4 camera streams.
  3. OpenCV may help