Create your own HDR images
posted Jun 30th 2008 11:59pm by Will O'Brienfiled under: digital cameras hacks

Hack-A-Day friend [Nathan] showed us some of his results creating his own High Dynamic Range images. Three normal Low Dynamic Range photos. One is under exposed, one is normal and the third is over exposed to capture the information needed. Then all three are used to create a single HDR image. Technically, the HDR image contains too much information to properly display, but even this limited version looks damn impressive.
You’ll need a tripod, a camera that allows you to adjust your exposure value and a decent CPU to do the processing. (This pic took a couple of minutes to render on a quad core cpu) You can check out the full HDR photo here and one of the original frames here. For the software side, you can use pfstools on the command line or QtpfsGUI for the graphics side - both are free and open source. [Nathan] suggests a camera with bracket mode and a remote shutter release for best results. If you’re all about theory, you can grab a white paper on the process here.

Any Canon camera can have bracket mode if you install the Canon Hacker’s Development Kit (http://chdk.wikia.com/wiki/Main_Page)
With updated firmware from the above site, you can set your cheap Canon to bracket, taking multiple photos with different exposures to create the base images for HDR rendering. You can use Gimp to manually create HDR images or the above references software.
Posted at 12:34 am on Jul 1st, 2008 by Lordhedgie