OpenCV

OpenCV

OpenCV (Open Source Computer Vision Library)[1] is an open source computer vision and machine learning software library. OpenCV was built to provide a common infrastructure for computer vision applications and to accelerate the use of machine perception in the commercial products. Being a BSD-licensed product, OpenCV makes it easy for businesses to utilize and modify the code.

OpenCV in HPC

Request a GPU node

srun --x11 -p gpufermi --gres=gpu:1 -N 1 -c 2 --time=1:00:00 --pty /bin/bash

Load a module

module load opencv

Running OpenCV binaries:

output:

Usage: opencv_createsamples

  [-info <collection_file_name>]

  [-img <image_file_name>]

 ...

Compiling and Running

Copy the OPENCV tutorial [2] directory from /usr/local/doc and cd to OPENCV

cp -r /usr/local/doc/OPENCV .

cd OPENCV

You will find the C++ source file " DisplayImage.cpp" and image file " graph.png"

Compile

g++ -o DisplayImage DisplayImage.cpp $(pkg-config --cflags --libs opencv)

If you want to compile using cmake, you need the "CMakeLists.txt" which is also included in OPENCV directory. Issue the following commands:

cmake . 

make

Run

./DisplayImage graph.png

You will see the Vertex Cover Graph displayed.

References:

[1] OpenCV Home

[2] OpenCV Tutorial