• BOUNDARY_CONSTANT : imcoarsen.c , linterp.h
• BOUNDARY_HSYMMETRIC : linterp.h , imcoarsen.c
• BOUNDARY_PERIODIC : imcoarsen.c
• BOUNDARY_WSYMMETRIC : imcoarsen.c , linterp.h
• DEFAULT_METRICS : imdiff.c
• MAX_METRIC : imdiff.c
• MSE_METRIC : imdiff.c
• MSSIM_METRIC : imdiff.c
• PSNR_METRIC : imdiff.c
• RMSE_METRIC : imdiff.c