image tiling and filtering using openmp

splits an image into filters and applies a filter to each tile in parallel using openmp.

• grayscale, threshold, sharpen, edge, blur and none
• input image is divided into a grid of 64x64 pixel tiles.

Build and run

g++ -std=c++17 -fopenmp -O2 -o tilefilter main.cpp -lm

./tilefilter <input.png> <filter> [output_dir]