When I switched the mapping in cpfind to logarithmic in the source code, the results became much better and
more control points were found.
Is this a known issue, or am I doing something wrong?
here is the patch of the changes I made.
I think it is reasonable to activate the logarithm mapping for all hdr images (currently filetype double/float and linear response type) automatically instead of an additional switch.
So I committed this modification. I hope this works for you also.
> images (currently filetype double/float and linear response type)
Do 16-bit TIFF files count as HDR for this? Or is it just EXR? I use
TIFF, not EXR.