Topics

1

Feature Requests / Export Mesh as XML ?

« on: May 06, 2017, 04:26:06 PM »

Hi,

is there a possibility to export the mesh as an XML for AutoDesk Civil 3D?


Thanks

2

General / Rolling Shuter - How do you check the accuracy and reliability of your models?

« on: May 06, 2017, 04:18:36 PM »

Hi, I have a question about rolling shutter. We work with Phantom 3pro and you advise to use a fit rolling shutter but the results do not seem right to me. I have an object - a landfill in the embankment, scanned with ScanStationC10 and P3p.
The results are attached in the picture1.
Gray is scanned.
Blue is a version on PS1.26 and camera adaptive camera model fitting and all parameters f cx cy k1 k2 k3 k4 b1 b2 p1 p2 p3 p4 - so we have run it.
Green is processing with version PS1.31 like: Align Photos – no camera model fitting/ /50 000/0; optimize - rolling shutter-OFF; F cx cy k1 k2 k3 b1 b2 p1 p2
Purple is processing with PS1.31 like: Align Photos – no camera model fitting/50 000/0; optimize - rolling shutter-ON; F cx cy k1 k2 k3 b1 b2 p1 p2
As can be seen, the difference between ONrSh and OFFrollSh is 10 cm. But OFFrSh is closer to the scanned, which I think is true. The difference between the scanned and the OFFrollSh  is 1-3 cm.
Interestingly, the ONrollSh  is lower. I have another depot that is in the excavation and there a rolling shooter ON is 10 cm higher from rolling shutter OFF.
Help me to optimize my projects.  When object is in excavation or ditches - the results is higher, and when embankments or convex elements the model is lower.
How do you check the accuracy and reliability of your models?
The height of flying both objects is 45 m. I have an each project of 10 GCP.
Thanks