@ishi Visual Studio is of no interest here as you cannot use it to cross compile to ARM Linux as far as I know. If your app is using OpenCV you will either need to install it on your RPi (including the -dev package) and sync the sysroot, or cross-compile it.

Lack INCLUDEPATH such as: INCLUDEPATH += /usr/local/include

What does requestWork() do? How is the thread acquiring new frames?

What processing are you doing with OpenCV ?

Hi, Wouldn't that question better be asked on the OpenCV forum ?