Please go to the top-level folder for the convolution tutorial and change the directory to src, and list the files:
cd $CONV_TUTORIAL_DIR/src
ls
There are two files namely “host.cpp” and “host_randomized.cpp”. They can be used to build two different versions of the host application. The way they interact with the kernel compute unit is exactly the same except that one uses the pgm image file as input. This file is repeated multiple times to emulate an image sequence(video). The randomized host uses a randomly generated image sequence. The host with random input image generation has no dependencies. In contrast, the host code in “host.cpp” uses OpenCV libraries, specifically using OpenCV 2.4 libraries to load, unload and convert between raw image formats.