PNM - NetPBM Portable Any Map

• Read support for the following file types:
  • PBM in P1 (ASCII) and P4 (binary) formats, 1 bit per pixel
  • PGM in P2 (ASCII) and P5 (binary) formats, up to 16/32 bits per pixel
  • PPM in P3 (ASCII) and P6 (binary) formats, up to 16/32 bits per pixel component
  • PAM in P7 (binary) format up to 32 bits per pixel component
  • Limited support for PFM in Pf (gray) and PF (RGB) formats, 32 bits floating point
• Write support for the following formats:
  • PPM in P6 (binary) format
  • PAM in P7 (binary) format
• Standard metadata support