negative-image

Transforms PGM image or image area to negative

execution

$ ./negimg input_file.pgm output_file.pgm for whole image

$ ./negimg input_file.pgm output_file.pgm x0 y0 x1 y1 to part of image with constraints x0-x1 and y0-y1

Name		Name	Last commit message	Last commit date
Latest commit History 4 Commits
README.md		README.md
main.c		main.c
makefile		makefile
pgm.c		pgm.c
pgm.h		pgm.h
surf.pgm		surf.pgm
totem.pgm		totem.pgm
venus.pgm		venus.pgm