Any image to PNM

Little tool to convert any image (JPEG, PNG, BMP, PSD, TGA, GIF, HDR, PIC, PNM) image to PNM. I made this project to practice my C skills and to learn how images works.

To do

• Custom image input support

  • JPEG
  • PNG
  • BMP
  • PSD
  • TGA
  • GIF
  • HDR
  • PIC
  • PNM

• Custom PNM output support

  • PBM
  • PGM
  • PPM

Quick start

# build
$ make

# build using shell script
$ ./build.sh

# run
$ cd build
$ ./img2pnm <args>

How to use

Print usage (exits with code 0)

$ ./img2pnm -h
Usage: build/img2pnm <input image> [-o[utput] output path] [-h[elp]]

Examples

Convert input.png to input.png.ppm

$ ./img2pnm input.png

Convert input.jpg to output.ppm

$ ./img2pnm input.jpg -o output.ppm