Image compression using K-means clustering

OpenCL image compression alghoritm for a parallel computing college course.

Compile

1. module load CUDA
2. gcc -o gpu gpu.c -fopenmp -O2 -lm -lOpenCL -Wl,-rpath,./ -L./ -l:libfreeimage.so.3

Run

./gpu input_image.png

Program arguments

input_image [output_image] [-K clusters] [-I iterations] [-d device_index] [-s]

• K - number of clusters used, number of colors in the output image (64 by default)
• I - number of iterations (50 by default)
• d - selected device (GPU) (0 by default)
• s - show available devices

The input image should be in PNG format.

Examples

K = 64

K = 32

K = 16