Stitching drone mapping images

[Garry Lawson]

Hello, I am trying to determine if PTGUI can be made to correctly process drone mapping images.  As you likely know, drone mapping images are not shot from a single location, but rather numerous (hundreds) overlapping downward facing images from evenly spaced locations throughout the specified area.  I have tried with the PTGUI PRO trial version, and some parts are acceptable, and some are a mess. If this should be working, can you supply whatever settings would be needed?  After 4 1/2 hours of trial and error, I'm not getting anywhere.  Thanks.

[John Houghton]

Please see the FAQ at https://www.ptgui.com/support.html#6_4 .

John

[Garry Lawson]

John, I followed the stitch mosaics instructions exactly, but get an immediate error when I click RUN OPTIMIZER:

The photos were taken with a DJI Mavic Air 2 drone flying at 200 feet with the camera pointed straight down.  The camera model/type is DJI FC3170.

The 123 photos are located at https://drive.google.com/drive/folders/15DBWuxsqkJ5PXgNnZ2c_-Uh3XzNnwiOG?usp=sharing if you wish to try for yourself.

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Garry Lawson

[John Houghton]

Garry,  I got a decent stitch, but the rather low altitude inevitably results in visible parallax errors on features poking up from the ground.  For the mosaic method I disabled some options on the Project Settings tab: unchecked "Roughly arrange images first" in the Align Images behaviour section, and several entries in the Miscellaneous section including "Position images automatically using metadata...".  Then I loaded in the images and set the lens focal lengthg to a small value of 0.5 degrees on the Lens sttings tab.  Running Align Images then gave a goodish result:

Download the PTGui Pro V12 project file and full size panorama from https://we.tl/t-lZjVyyWlVC .

John

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