DTM generated not using the edited ground and road layers

PIX4Dmapper
1

My goal is to generate a DTM. Since Pix4d is not doing a perfect job on classifying the points I have to edit the point cloud and reassign points to layers.
On my example I have reassigned points from the ground layer to other layers ( building …) . After editing I have re-run step 3 for DTM. Issue is that the DTM is still using the old original ground and road surface layers.

I tried to save and re-open the file after editing to see if Pix 4d remembers the re-assignment of the points. The answer is not a straight yes or no .
Upon re-opening , after turning off all the layers except ground and roads I see the original point cloud without edits .
However when I activate the edit cloud function I see the layers updated with all my previous editing .I deactivate edit point cloud and the layers keeps the edited data.

I have re-run step 3 and new DTM file ignored my editing.

Anyone experienced this issue before ?Please advise

Dorin

2

Hi Dorin,

Thank you for your request and welcome to the Pix4D Community.

Could you please share with us some screenshots of PIX4Dmapper showing the different steps and the non-updated point cloud classification?
When you run step 3, did you disable step 1 and 2? These steps need to be disabled otherwise will be computed again.

If you can’t or don’t want to share screenshots of your project(s) on a public forum, feel free to open a support ticket with us. The data will then not be visible to other users or visitors.

You can find additional information here: