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Messages - dronesurveyconsultancy

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16
General / Re: flat model
« on: June 27, 2020, 10:52:27 AM »
See attachments,

Greetings

17
General / flat model
« on: June 26, 2020, 08:08:30 PM »
Hello All,

I have this problem, i flew a mission, my pictures look super sharp, but when aligning a part does not align. I can align them in a new chunk but when creating a model, everything is flat.

See attachment.

Anyone has an idea?

Greetins

18
General / Re: Bad results with newest version
« on: April 21, 2020, 02:45:01 PM »
I splitted the project up and only used the pictures i needed for that part thats why

19
General / Re: Bad results with newest version
« on: April 21, 2020, 01:56:29 PM »
Alexey,

I have aligned my project on high, 120000 keypo limit.

After the alignment i filtered the pointcloud:
-first i optimised cameras with: FIt F k1 k2 k3 cxcy p1 p2
-uncertainty = 10 + optimize camera
-projection accuracy: 2.5 + optimize cameras

then i optimezed all cameras with all corrections and added my gcp's + marked them in all pictures

i filtered 1 more time : reprojection error:0.35

Then i deselected all cameras and run optimezed with all corrections and only gcp.

The result was huge errors on all GCP's see attached marker result.

When i processed the same project on the older version i had errors of 0.02 cm on all markers.

The accuracy was checked only in metashape.

Accuracy of pictures is on standard 10 m and of gcp =0.005

Using coordinate system: 31370 lambert 72 belgium

Greetings


20
General / Bad results with newest version
« on: April 21, 2020, 12:58:46 AM »
Hello,

I recreated a 3d model with the newest version today (1.62)
Now i have errors of more than 50 cm on my gcps, is there a problem with this new version?

Greetings

21
General / Re: Way to remove shadows of the orthomosaic
« on: February 19, 2020, 07:53:03 PM »
How do you mean? You can draw polygons around errors on the ortho and choose different images to use to repair.

22
General / Re: DSM accuracy
« on: February 19, 2020, 07:49:48 PM »
Loading the DEM into landsurvey software and looking at difference between DEM and measured points

23
Is this fixed in 1.6.1?

24
General / Marker errors compared to model
« on: December 24, 2019, 06:34:41 PM »
Hello everyone,

I was wondering why in the reference panel my markers are displaying very small errors.
When i import my pointcloud into autocad and checking my point cloud to my measured points i have errors much bigger than agisoft is telling me in the Z axis.  Using 1.5.5.

Anyone have an opinion or ideas?

Greetings and best of wishes

25
General / DSM accuracy
« on: December 24, 2019, 02:04:05 PM »
Hello everyone,
I noticed a difference of 10 cm between the DSM created from metashape and the real height of a point measured in the raw pointcloud.
Is there a explanation to this?

Greetings

26
General / Re: Poor Dense Cloud Generation - Metashape Pro 1.5.1
« on: October 28, 2019, 02:18:08 PM »
Is there any new news or setting to aply on this topic, i have a big project, processed in 1.5.5 and have still the same problems.
Attached a screenshot, i spended already several hours cleaning. No tweaks are being used.

Greetings




27
General / Re: Help reconstruction Castle
« on: October 13, 2019, 12:47:03 PM »
Hello,
I'm not using the latest version of metashape pro because i have to much accuracy isues.
How do i send this report + overview?

28
General / Re: Help reconstruction Castle
« on: October 11, 2019, 11:52:55 AM »
Anyone?

29
General / Help reconstruction Castle
« on: October 10, 2019, 02:23:47 PM »
hello!

I have some problems reconstructing a castle, going for a high resolution high accuracy 3D model and ortho.

Flight was with my phantom 4 pro and gcp with a topcon hyper sr.

1 set of flights was a double cross grid 90° down at 41 m height.  (overlap 85/80)

--> problem, my GCP were not measured accurate (only 4cm accuracy) because there are a lot of trees on site.

2 set of flights was a double grid 75° down at 45 m height. (overlap: 85 / 80)

GCPS are ok, i can generate a decent cloud but my ortho looks crappy and overal there is a lot of noise in the pointcloud.

because of different lighting during recording my ortho looks like there a spots everywhere, is there a way to fix this?

Greetings


30
General / Re: Noisy point cloud - less detail compared to PIX4D
« on: September 05, 2019, 09:49:45 AM »
Unfortunately, i can not share the dataset. If i process the Nadir dataset seperately from the oblique dataset i dont have the noise. Is this normal?

Greetings

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