PFM Image File Format

The Portable FloatMap (PFM) file format stores images with floating-point pixels and hence is not restricted to the 8-bit unsigned integer value range of 0-255. This is useful for HDR images or images that describes something other than colors, such as depth.

A good viewer for this file format is PfmPad. We do not recommend the Maverick photo viewer because it doesn't display depth images properly.

AutonomySim provides code to write pfm files in C++ and, to read and write pfm files in Python.