A C++ test to compare cv::filter2D, cv::gpu::filter2D and cv::gpu::convolve, in OpenCV 2.4.9
###To build:
cmake .
make
###Usage:
./gpu_convolve_test [path_to_image [filter_wavelength_pixels [filter_orientation_degrees]]]
####e.g.
./gpu_convolve_test
./gpu_convolve_test chiguiro.jpg 8
./gpu_convolve_test chiguiro.jpg 64 90