Messages

16

General / Re: ArcGIS integration

« on: September 12, 2018, 05:35:34 PM »

I would be very interested in this also. My organization is heavily invested in ESRI and it would be a pretty huge deal to me to be able to better integrate our PhotoScan products into the ESRI ecosystem of products such as ArcScene.  So far I have been pretty frustrated trying to get my models to into ArcGIS in any way.

17

General / Digital elevation model - why does the scale have negative numbers?

« on: August 15, 2018, 11:42:06 PM »

I have been working on a project to map out a coral reef plot. In the plot we have ground control points with known distances which were recorded into PhotoScan. So the scale in the DEM that PhotoScan created goes from -1.03 meters to 1.22 meters (see attached pdf of the DEM).

I am wondering why the negative baseline? 

My wild guess is that since I could not tell PhotoScan what the lowest point is, then PhotoScan just arbitrarily picks a starting point and measures everything up or down relative to that point? Is that correct or is something else going on?

If anyone could shed some light on this I would greatly appreciate it!

--Chris

18

General / Re: Better to add lat/long for GCP before or after Align Photos step?

« on: July 12, 2018, 07:52:21 PM »

Thank you SAV! That makes sense now, I have noticed the blue flags showing up when adding markers after the alignment. Its a little bit of a pain to go and check them all, but it found some I may have missed otherwise too.

Cheers!

Chris

19

General / Better to add lat/long for GCP before or after Align Photos step?

« on: July 08, 2018, 08:58:02 PM »

My photos do not have EXIF data, but I do have four ground control points with known lat/longs.  So should I do the Photo Align step first and then add in Markers with lat/long info, or should I add the Markers and lat/longs to the photos first before I do the initial alignment? 

I am new at this so please any help appreciated! Thanks.