HDR Processing could be done using open source tools. Here are the tools that could get you started.
used to create a HDR
- Create a HDR image from the input images.
- Tonemap the created HDR image.
It is a process similar to HDR, except that the images are fused with one another. It has its own advantages and disadvantages.
used to finish off the HDR
- Masking . Usually the LDR created from the created from QTPFSGUI, need to be placed on top of the original image, mask out some portions.
- Curves, Levels, Saturation.
- Adjusting RGB channels.