My DSM and DTM have about 11 cm of GSD. DTM = 5 x GSD (2.24 …). To find plant height I do DSM-DTM but the resulting raster containing plants height has negative values in various places. How can I correct this problem and increase the accuracy of pixel height values? I have used the parameters be…

DSM - DTM showing negative values

Mike_K September 16, 2022, 2:55pm 21

I would reprocess with new GCPs to ensure you get the correct outputs.

Topic		Replies	Views
Why the Pix4Dmapper-derived DSM values are negative?asking for more help PIX4Dmapper Questions/Troubleshooting	14	1680	March 12, 2024
Negative DSM Values PIX4Dmapper Questions/Troubleshooting	3	449	July 9, 2021
Improving the accuracy of DTM and DSM PIX4Dmapper Questions/Troubleshooting	1	1115	December 8, 2017
DSM giving Negative values even with GCP's PIX4Dmapper	1	387	November 11, 2021
DTM and altituted PIX4Dmapper Questions/Troubleshooting	6	1635	March 19, 2020