mtf_mapper crash

Status: Beta

Brought to you by: fvdbergh

mtf_mapper crash

Forum: General Discussion

Created: 2026-05-19

Updated: 2026-05-19

dima - 2026-05-19

Hi. I'm observing an mtf_mapper crash. This is mtfmapper 0.7.41-2 (Debian version; the current latest release). I see this:

$ mtf_mapper -t 0.4 --lensprofile --esf-sampler quadratic --lp1 30 frame00104-cam0.png . Warning: No output specified. You probably want to specify at least one of the following flags: [-r -p -a -s -f -q] 8-bit nonlinear grayscale Thresholding image ... Computing gradients ... Component labelling ... zsh: segmentation fault

First off, this warning is a bug, right? I specified --lensprofile. Is something wrong with that?

I haven't tried to debug the crash. It doesn't happen with even small tweaks of the arguments.

Thanks.

frame00104-cam0.png
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- Frans van den Bergh - 2026-05-19
  
  Thanks for reporting this bug!
  
  Pretty straightforward out-of-bounds memory access that happens when very few valid sagittal or meridional edges remain after lensprofile quality filters.
  
  Revision 733 fixes this (and the spurious warning).
  
  Regards,
  Frans
  
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