pfstools

About

pfs-calibration is a set of command line tools for reconstructing an HDR image from a sequence of exposured. The software implements two photometric calibration methods: by Robertson et al. 2003 and by Mitsunaga and Nayar 1999. pfs-calibration is a part of pfstools (from version 2.0).

Here are some key features:

Reconstruction (merging) of an HDR image from a set of JPEG images using information from the EXIF header.
Reconstruction from camera RAW images using DCRAW.
Global (homographic) image alignment (with pfsalign).
Input image bit-depth can be between 8 and 16 bits.
The software is meant to provide an accurate photometric reconstruction rather than visually pleasing results.

Tools provided with this software can be used for photometric calibration of both off-the-shelf digital cameras and HDR cameras as described in:

Photometric Calibration of High Dynamic Range Cameras
G. Krawczyk, M. Goesele, H.-P. Seidel
In: MPI Research Report MPI-I-2005-4-005.
[poster]

Check a short tutorial on calibration of the LDR cameras and the recovery of the HDR images from multiple exposures. For details on the calibration of the HDR cameras please refer to the research report.

Please refer to the original pfscalibration web page for more information.

News

pfstools 2.2.0 releasedThu, 12 Aug 2021 09:40:38 -0000

This is mostly a bug-fix release with many fixes allowing to work with newer version of libraries. Several compilation issues have been resolved on Ubuntu 18.04, 20.04 and Cygwin. The HDR merging (pfshdrcalibrate) uses now better, noise-optimal weights, which should reduce noise for darker image parts.

pfstools 2.1.0 releasedMon, 13 Nov 2017 17:48:48 -0000

This release adds support for .yuv video files encoded as PQ2020 or HLG2020 (used by the reference implementation of h265). pfsview was updated to link with Qt5 instead of Qt4. Several compilation issues on Ubuntu have been resolved.

pfstools 2.0.6 releasedWed, 15 Mar 2017 12:46:48 -0000

This is a bug-fix release, solving compilation and library issues on Ubuntu 16.04. Matlab MEX files can now be compiled on Windows.

pfstools 2.0.5 releasedThu, 26 May 2016 09:41:02 -0000

This is a bug fix release, addressing issues in Octave interface, newer compilers and with some HDR file formats.