An interview project
Camera2 setting and config is helped with google official sample
Tested on Samsung S7Edge Android 8.0
Function: Show camera preview as fullscreen, running ORB feature detection in the background, if no. of features > 400(threshold), a text of "Too many features" will showup in the middle of the screen"
You need to mannully add OpenCV to develop it. You may refer to the settings from this stackoverflow answer
The OpenCV android sdn is of version 3.43 download