I’m getting the following warning during step 3 processing:
Warning w9020: GDAL Warning <1> RowsPerStrip not defined … assuming all one strip.
The error multiplies a few hundred times and step 3 does not finish processing. I’m trying to create a reflectance map using NDVI Images taken by a Parrot Sequoia. The other steps process just fine and tiles for the different colour bands have been created but not merged.
The warnings shouldn’t cause any problem. I suspect it might be due to oblique images (maybe the area had slopes or the flight wasn’t nadir). Ag template uses alternative calibration which assumes that the images are nadir. I would suggest you use standard calibration and re-process. If that does not solve your issue, you can file a support ticket to us.
I managed to get an NDVI image by selecting “generate NDVI image” (if I recall correctly) on the right hand side after processing the last step (and getting those warnings).
The reultingimage looked perfect and I thought the matter was resolved. However, this week my colleague tried to analyse the image in ArcGIS and we noticed that the image seemed to lack the actual index values. Any idea how this happened?
What values does ArcGIS show? They should have the same values that were displayed in Pix4D. If some pixels have missing values, it is because those pixels were overexposed.
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