Tiled and Non tiled convolution algorithms comparison in CUDA and histogram equalization technique for image processing.
None tiled Version
make
./exec_non_tiled
Output:
Enter filter radius : 32
Enter image size. Should be a power of two and greater than 65 : 6400
Image Width x Height = 6400 x 6400
Allocating and initializing host arrays...
CPU computation...
CPU time: 7.05165 seconds
GPU computation...
GPU time: 141.062302 ms.
Tiled Convolution
./tiled_conv
Enter image size. Should be a power of two and greater than 33 : 6400
Image Width x Height = 6400 x 6400
Allocating and initializing host arrays...
CPU computation...
CPU time = 3.54343 seconds
GPU computation...
GPU time: 58.340351 ms.
The results have been taken on a different machine than the results above but they are proportional.
In Histogram Equalization folder run make to create the object file.
Pass an input image to equalize along with its output file you want to save into
./exec input.pgm output.pgm
Check on Histogram_Equalization/images folder for the results of histogram equalization applied on images