The opencv_nonfree module provides very useful features such as two prominent image features SIFT and SURF (including the CUDA’s implementation). In this tutorial, I demonstrate how to install this module into OpenCV 3 on Ubuntu.
Prerequisites Remove the old version which has been installed in the system. Do not install opencv via apt-get Install cmake : sudo apt-get install cmake Installation Download opencv git clone https://github.com/opencv/opencv
Do not download the source from homepage.