Export Dem...

[dinosaur]

Hello,

I  aligned enough photos and calculated an 3D-Model (of a footprint). Now, I want to "export Dem...", but the button isn't activated (always grey). Why I could not use the export-DEM-function?
Normal "Export Model"-function works...

Are there some special conditions to activate the feature?

Sorry, my english isn't the best.

Thanks for your help!

[Alexey Pasumansky]

Hello dinosaur,

In order to enable DEM exporting you need to set up the coordinate system via Ground Control dialog (Tools Menu) or set the reference distance using markers.

[dinosaur]

Thanks!

But I set up a reference distance between 2 Markers. A third Marker is also integrated. Export DEM isn't activated...

I read something about a Keypoints-file. Is such a Keypoint file really necessary to set up a 3D - coordinate system? Or what's its' task?

[Alexey Pasumansky]

Hello dinosaur,

Export DEM function works for the active chunk if the following conditions are fulfilled:
- chunk have to be referenced (marked by "R" in the Workspace pane) either by setting reference distance or by Ground control
- chunk should contain 3d-model built by Build geometry process

Please check if this is true for your project. If the Export DEM isn't still activated you can send us .psz file to support@agisoft.ru so we could investigate the problem.

Ground  Control dialog is usually used for setting up geographic coordinate systems based on camera or marker locations, but I don't think that this way could be applied for the footprint model.