I have a "DenseTrack.exe" file in matlab which needs opencv. I used "system('DenseTrack.exe' 'input_path.avi' -o 'output_path.bin') " command in matlab to get the input videos and give me the outputs which are '.bin'. to access the opencv, I copied dll files of opencv 2.4.9 to the .exe folder. but, it dos not work and there is no output. I am using R2014b x64 matlab. and , visual studio 2012 is installed on my computer. how can i solve the problem? how can i install opencv?