Topics

16

Bug Reports / Zooming bug

« on: November 14, 2011, 11:39:00 AM »

Hi,

I'm working with 2 chunks of approx 200 images.  When I register the first chunk to map coordinates, I sometimes have problems with the zoom function.  I often just can't see one of the models, as if I was zoomed out way too much or too little.  Since the scale of the un-registered and registered DEMs is so different, it becomes a nightmare to manage the zooms.  GIS packages and photogrammetry software all have a 'reset view' or 'fit to frame' command.  We need one!  In the meantime, is the a python command I can use in the console?

Patrice

17

General / Using camera external orientation

« on: August 25, 2011, 04:19:56 PM »

Hi, sorry if some of these questions are obvious but I'm new with photoscan.

So I want to use a photo dataset generated by a UAV (usually between 100-300 pics).  The UAV produces camera position and orientation so the obvious thing to do is to use those instead of ground control points.  A few things that weren't clear from the manual:

1- What is the naming convention for the XML files?  How can I produce these in a way that photoscan will easily import a few hundred and correctly link each file to the correct photo?
2-How does photoscan handle error in the external orientation?  Is there a least squares adjustment?  Does it warp the DTM to fit external orientation (EO) or does it adjust the EO and preserve the DTM?
3-Where in the workflow should I import the EO? Before or after the alignment?

Many thanks
Patrice