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Wrong Height measurements


I flew a mission at 40 meters ground height with about 16 GCP at a measured altitude of about 52 meters over the sea level, but when processing the images in Pix4d it shows an altitude of -25m in the images which doesn’t make any sense not even in the case it was measured below the sea level. Any ideas why I am getting this values?

Hi Martin, 

We observed this behavior before and I would recommend checking the following post for more information: Negative Altitude Values

I encourage you to post any additional questions there so we avoid duplicate posts.