Augmented PFM

File Format
Name	Augmented PFM
Ontology	Electronic File Formats Graphics Augmented PFM
Extension(s)	.pfm

Augmented PFM, or PF4, is a variant of Portable Float Map (PFM) image format, extended to support transparency. PFM is itself an extension of the Netpbm formats.

Identification

Files begin with ASCII "PF4", followed by a whitespace character.

Links

• Synthetic HDR Fire Sequence → "Augmented PFM Format"