Found a no-data or NaN pixel in the DEM. Cannot continue. The dem_mosaic tool can be used to fill in holes.

[劳承学]

Dear all,

when I use the scipt,

sfs -i run_full1/run-DEM.tif A.cub -o sfs_ref1/run

I got the error:

Found a no-data or NaN pixel in the DEM. Cannot continue. The dem_mosaic tool can be used to fill in holes.

After run "dem_mosaic run_full1/run-DEM.tif  --hole-fill-length 5000 -o blended.tif",

I still got the same error...

[Alexandrov, Oleg (ARC-TI)[KBR Wyle Services, LLC]]

Can you examine your "blended.tif" in stereo_gui and see if it has holes or missing data at edges? You can use the "View->Hillshade" option to show it as hillshaded.

Then you can pass it to sfs as:

  sfs -i blended.tif  A.cub -o sfs_ref1/run

You can also try to crop out of blended.tif a portion without holes, with gdal_translate -srciwn. The bounds to put there an be found with stereo_gui (https://stereopipeline.readthedocs.io/en/latest/tools/stereo_gui.html#use-as-an-image-viewer).

If no luck, you can regenerate run_full1/run-DEM.tif. For that, you'd do:

point2dem run_full1/run-PC.tif --search-radius-factor 5  --dem-hole-fill-len 100

then you should examine run_full1/run-DEM.tif in stereo_gui as before and crop from it a rectangular clip having valid data everywhere, which can be passed to sfs.

I will suggest reading carefully the SfS examples at https://stereopipeline.readthedocs.io/en/latest/sfs_usage.html. The SfS program needs a lot of attention to be used right.

---

From: ames-stereo-pi...@googlegroups.com <ames-stereo-pi...@googlegroups.com> on behalf of 劳承学 <laoch...@gmail.com>
Sent: Saturday, February 26, 2022 8:43 AM
To: Ames Stereo Pipeline Support <ames-stereo-pi...@googlegroups.com>
Subject: [EXTERNAL] Found a no-data or NaN pixel in the DEM. Cannot continue. The dem_mosaic tool can be used to fill in holes.

 

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