PNM - Netpbm Portable Image Map [File Formats]

Collaboration diagram for PNM - Netpbm Portable Image Map:

Description

PNM formats Copyright Jef Poskanzer

Internal Implementation.

Features

    Data Types: Byte and UShort
    Color Spaces: Gray, RGB and Binary
    Compressions:
      NONE - no compression [default]
      ASCII (textual data)
    Can have more than one image, but sequencial access only.
    No alpha channel.
    Internally the components are always packed.
    Internally the lines are arranged from top down to bottom.

    Attributes:
      Description (string)

    Comments:
      In fact ASCII is an expansion, not a compression, because the file will be larger than binary data.