Enblend encountered degenerate image/mask geometry

[Benjamin Schnieders]

Dear mailing list,

sorry for being a pest, but this issue is blocking more and more of my panoramas.

(See also "enblend oddity" thread.)

I keep running into the issue that enblend determines that my seam lines are defective, triggering the check in mask.h:969. What exactly is causing isolated points in images?

I included a minimal example again, 2 images which can be found here: https://airesearch.de/files/staticimgs/enblendProb/example.zip

enblending them gives the following output:

$ enblend -o result.tif --compression=DEFLATE  -f101957x17605+4588+1257 image0.tif image1.tif 

enblend: info: loading next image: image0.tif 1/1

enblend: info: loading next image: image1.tif 1/1

enblend: encountered degenerate image/mask geometry; too high risk of defective seam line

Now, it could be my input images, as some other panoramas work fine. How can I set the black-alpha-mask-check-isolated-points-threshold parameter? I'd like to see the masks generated, which I obviously can't, as no output is created.

Or, it could be a bug somewhere. If you reverse the order of the two images, everything works. Doesn't that indicate a bug?

Help me, hugin mailing list, you're my only hope.

Best,

Benjamin