This program takes an exposure series of DNG/CR2/.. RAW files and merges it into a high dynamic-range EXR image. Given a printf-style format expression for the input file names, the program automatically figures out both the number of images and their exposure times. Any metadata (e.g. lens data) present in the input RAW files is also copied over into the output EXR file. The program automatically checks for common mistakes like duplicate exposures, leaving autofocus or auto-ISO turned on by accident, and it can do useful operations like cropping, resampling, and removing vignetting. Used with just a single image, it works a lot like a hypothetical 'dcraw' in floating point mode. OpenMP is used wherever possible to accelerate image processing. Note that this program makes the assumption that the input frames are well- aligned so that no alignment correction is necessary.
To install use the PPA below
sudo add-apt-repository ppa:dhor/myway sudo apt-get update sudo apt-get install hdrmergeTo run use the Terminal to start the GUI hdrmerge