Posts Tagged ‘luminance’
Creating HDR images in Ubuntu with Luminance (QTPFSGUI)
Saturday, February 6th, 2010
Posted in: HDR, luminance, qtpfsgui open source.
For those who are not (yet) posession one of the latest generation digital cameras with build-in HDR capailities and the more experimental folks, there is a fantastic tool to create HDR images by combining multiple shots of the same scene: Its called qtpfsgui.
That is, it used to be called that and is still avaiable in Ubuntu under this name (sudo apt-get install qtpfsgui). However, qtpfsgui is discontinued since mid 2009 and has been replaced by the Luminance HDR project.
Since qtpfsgui crashed under ubuntu 9.10 when attempting to save any HDR image, I downloaded the latest luminance version, compiled and installed it like so:
- Download the luminance source and unpack the folder.
-
Install the dependencies required to compile luminance:
sudo apt-get install qt4-qmake libexiv2-dev libopenexr-dev fftw3-dev libtiff4-dev libqt4-dev g++ libgsl0-dev -
Compile luminance (takes a few minues) and install it. Change to the unpacked luminance folder and do:
qmake
make
sudo make install
That´s it! you now have luminance installed and it should be in your main menu under applications>graphics.
It works perfectly under Karmic.
One of the best things about luminance is that you can play a lot with the algorithms and parameters used to tonemap the HDR into a LDR image. In contrast to many other (commercial) tools, you actually get to know which algorithms are used, who created them and can read a little more on how they work (if you are not to opposed to mathematics) by googling up the corresponding papers on scholar or so. This way, experienced users are able to “squeeze” a lot more out of their HDR’s with this tool than with many commercial ones.