I’ve been trying to use 2.5.0 to do some real processing, but have failed completely.
The requirements are simple:
- Create a HDR file using bracketed input images so it does not contain artifacts or color casts.
- Compress the dynamic range of the scene to not lose any highlight or shadow detail.
- The result should encompass a higher dynamic range than any of the input images alone.
- The result should not have more noise than any of the input images.
I already ran into a wall at the first point - the HDR files have artifacts in the highlights. Tried all formats, all profiles, using source images both raw and TIFF, with both sRGB and linear encoding. Opened an issue https://github.com/LuminanceHDR/LuminanceHDR/issues/43
Ignoring the artifacts, I was eager to see the dynamic range being compressed. Not so. A 5-image bracketed set, tone mapped, had as much clipping as the 4th image alone. Opened an issue https://github.com/LuminanceHDR/LuminanceHDR/issues/44
The last point also turned out to be a problem, but I found that using Profile 6 lead to a noiseless HDR file.
Here are two sets of bracketed photos:
(alternate download): 2015-12-04_karin_library.zip (93.9 MB)
Have a go at it. I’m eager to find out that I’m doing something wrong.
One of these two images is a tone-mapped HDR made from 5 images created in LHDR and then I applied only one simple curve in RT to fix the tones (because LHDR lacks curves and the levels tool is stone age). The other is a single image from the set I uploaded above.
Which one has more dynamic range, less clipped highlights, less noise, i.e. which one is the HDR?