Point height different with different way of processing

PIX4Dmapper
1

Good day everyone, I have a question when processing the UAV file.

The problem occurs when I tried processing the file in 2 different ways on same location

  1. A project with 100 photos
  2. The same project, with much bigger location, and over 300 photo.

The end result gave me a height difference of almost double (8m and 18m). Is there any way to solve this issue? Please view the image below, thank you…

FYI: This project has no GCP and also processed using the same setting…Thank you

1b13c973-210f-418e-b225-7ae0b9153008
1b13c973-210f-418e-b225-7ae0b9153008654×890 180 KB

2

112dca2f-b409-4f0a-88a8-d64325a57891
112dca2f-b409-4f0a-88a8-d64325a57891666×846 171 KB

3

Hi @laujitsung,

In my understanding you captured at 2 different moments a specific area and tried to process the 2 projects but there were differences in heights.
Can you please send us the quality reports of these 2 projects you created in a pdf format?

Best,