Optimized CPU Gaussian blur filter

Features :

Cache efficient data access
Multithreading using OpenMP
Vectorization using SSE 4.1 intrinsics
Cross-platform (Linux, Windows, OS X)
24bpp uncompressed BMP reader/writer

Build :

mkdir build; cd build/
cmake ..
cmake --build . --config Release

Usage :

./gbfilter input.bmp output.bmp blur_radius tile_width tile_height