Messages

1

General / Re: Errors alignment images Mavic 2 PRO (mission planning: parallel to main path)

« on: August 25, 2020, 12:06:21 PM »

Hi  Dieter,
thanks for your support and cooperation.
Yes I have GCPs and the model seems to work pretty well.
I'm just having trouble understanding some Metashape settings and I'm doing other tests on different datasets.
I will ask for some more suggestions and I will pay more attention in the acquiring images.
Thanks in advance
LSR

2

General / Re: Errors alignment images Mavic 2 PRO (mission planning: parallel to main path)

« on: August 25, 2020, 11:55:12 AM »

Hi Paulo,
thanks for your support and cooperation.
I didn't answer earlier because I did some tests following your suggestions and it took a long time.
The dataset you processed was successful but I have applied the same processing  parameters  to other datasets and I have had other problems (alignment, placing GCPs, optimization, camera calibration), that I am trying to solve using your suggestions.
I don't understand if the problem is the images acquired with Mavic2 or the Metashape 1.6.4 settings.
If I don't solve the problem I will ask for your support again...if possible.
Thanks in advance
LSR

3

General / Re: Errors alignment images Mavic 2 PRO (mission planning: parallel to main path)

« on: August 20, 2020, 06:40:02 PM »

Thanks a lot for your support, let me know if you can process the images.
Thanks thanks thanks
LSR

4

General / Re: Errors alignment images Mavic 2 PRO (mission planning: parallel to main path)

« on: August 20, 2020, 05:27:05 PM »

Yes , sure.
You can download the photo set from this link: https://we.tl/t-oFZXBrckau .
Thanks in advance.
LSR

5

General / Re: Errors alignment images Mavic 2 PRO (mission planning: parallel to main path)

« on: August 20, 2020, 03:43:43 PM »

I have unchecked the GPS coordinates in the Reference-pane and changed the Key and Tie Point as you suggested, but it didn't work. The alignement failed.
I think that the problem is the type of flight I have done, parallel to main path. This means that camera had always the same orientation in global space, regardless of the flight direction.
Thanks in advance.
LSR

6

General / Errors alignment images Mavic 2 PRO (mission planning: parallel to main path)

« on: August 20, 2020, 12:43:37 PM »

Hi all,
I have problems with alignment of images acquired with Mavic 2 PRO. After alignment process the images appear tilted and shifted (see IMM.1).
Mission has been planned with GS PRO (DJI) with settings (parallel to main path), see IMM.2 .
The images alignment was processed with Metashape v. 1.6.0 and the following settings (see IMM.3):
-Accuracy: HIGH
-Generic preselection: YES
-Reference preselection: SOURCE
-Key point limit: 50000
-Tie point limit: 5000
-Guided image matching: NO
-Adaptive camera model fitting: YES

The rolling shutter option has been unchecked, because the result was worse (see IMM.4).

Can someone help me to solve the images alignment problem?

Best regards,
LSR