Linux script to generate HDR images from bracketed images

A while ago, as I was exploring the world of HDR images and how to create them on Linux, I stumbled across the photoblog of Edu Pérez and was very interested by the workflow he used to create HDR images on Linux.
He even put most of it together in a convenient script.

Based on his work, I created my own script to align more closely to my requirements.
For instance, I happen to shoot in JPG sometimes and needed the script to support this format as well as RAW.
Moreover I also scripted the Gimp part of the workflow so the script actually generates an XCF file containing 3 layers.

• An exposure blended image produced by enfuse as the background
• An HDR image tone-mapped using the mantiuk06 operator in a layer in Soft-Light mode and 50% opacity
• An HDR image tone-mapped using the fattal02 operator in a layer in Overlay mode

The script is invoked from the command-line:

Usage: createHDR.sh [OPTION] DIR
-a Align the pictures first
-g{val} gamma option for RAW conversion (--gamma={val} -- DEFAULT=0.45)
-s{val} saturation option for RAW conversion (--saturation={val} -- DEFAULT=1.0)
-e{val} exposure compensation option for RAW conversion (--exposure={val} -- DEFAULT=0.0)
-l{val} linearity option for RAW conversion (--linearity={val} -- DEFAULT=0.10)
-c{path} Configuration file for ufrraw IDFILE.ufraw
-q Quiet
-h This help

The script will make sure that only one type of file is present in the directory.

If -a is passed as an option, the script will first align the images using align_image_stack command provided by Hugin.

Here are a couple of images produced by this script out of a series of 3 bracketed images:

You can download the script here:


createHDR.sh
6k


Update (23 Sept 2009): updated the script to v1.1. See changelog in the script itself.
Update (29 Sept 2009): updated the script to v1.2. See changelog in the script itself.
Update (2 Nov 2009): updated the script to v1.3. See changelog in the script itself.
Update (12 Nov 2009): updated the script to v1.3.1. See changelog in the script itself.

This software is licensed under the CC-GNU GPL version 2.0 or later.