Alterando a Altitude do Voo - DTM/DSM mostra o ponto mais alto no centro da imagem?

Question

Olá! Eu realizei este levantamento a 197 pés com 80% de sobreposição frontal e lateral. Este é o DTM que obtenho após ajustar a altitude usando a superfície de elevação. Também percebo que as linhas do plano de voo não se deslocam com as imagens, alguém sabe o que posso fazer para corrigir meu DTM/DSM ou o que fiz de errado? <\/P> <\/span><\/P><\/span><\/P>Agradeço qualquer ajuda que puderem fornecer! Obrigado desde já! <\/P> <\/P>

Cody Benkelman · Answer

Hi Sara

Sorry for the delay, I just found your post.  It's a known issue that many drones report incorrect height values.  This is most easily and accurately corrected by using ground control.  I see two green crosses, so it appears you DID use control?  (I know you sent me private message about control points as well)  Are you sure they were referenced to orthometric height, not ellipsoidal height?

I'd also recommend at least one additional point near the center - long narrow projects sometimes curve upward or downward and I see yours did that - adding a 3rd point should make it flatten out

Cody B>

Anonymous User · Answer

I am not a Drone2Map user, but I'd like to hear from other's experience.

What is the problem you're encountering here? It's not clear from your post what is going on with Drone2Map.