[OpenDroneMap-users] Tips and tricks for model re-runs

[Alex Mandel]

I added a full gcp list to the copr data set. It runs but I have yet to
verify how well it did in real world terms.

Feel free to test with that.

Thanks,
Alex

On 03/05/2015 07:11 PM, Stephen Mather wrote:
> Hi Ivan,
> 
> Boruszyn now has GCPs associated with it:
> 
> https://github.com/merkato/odm_boruszyn_kap
> 
> PUWG1992
> 340577 547925 70 691 3498 img_4851.jpg
> 340610 548131 71 1248 2921 img_4854.jpg
> 340649 548176 70 1078 2312 img_4912.jpg
> 
> And all these GCPs are valid when processed. Boruszyn does not make ideal
> orthos, due to the geometry difficulties of a KAP flight, but it's such an
> amazing dataset.
> 
> Somewhere I have a couple more GCPs for Langley, but I can't find them... .
> I know Aaron Racicot, the originator of that dataset, is working both on
> GCPs and EXIF camera positions for that dataset. He's nearly done with
> that, so stay tuned.
> 
> Also, there's a new graceful-exit branch (thanks to Spotscale) to test:
> 
> https://github.com/OpenDroneMap/OpenDroneMap/tree/graceful-exit-gcp
> 
> Please give this a test on datasets that have no EXIF and no GCPs.
> 
> Thanks,
> Best,
> Steve
> 
> 
> 
> 
> On Wed, Mar 4, 2015 at 8:03 AM, Ivan Lizarazo <ivan.lizarazo at gmail.com>
> wrote:
> 
>> Nice work, Steve. It's really helpful.
>>
>> I ran ODM with the Langley dataset using this gcp_list.txt (taken from the
>> wiki):
>>
>> *WGS84 UTM 10N*
>> *544256.7 5320919.9 5 3044 2622 img_0525.jpg*
>> *544157.7 5320899.2 5 4193 1552 img_0585.jpg*
>> *544033.4 5320876.0 5 1606 2763 img_0690.jpg*
>>
>> After a while, ODM quit the georeferencing job.  This is the last part of
>> the odm_georeferencing_log.txt:
>>
>> *Reading following GCPs from file:*
>> *x_: 544257 y_: 5.32092e+06 z_: 5 pixelX_: 2622 pixelY_: 3044 image:
>> img_0525.jpg*
>> *x_: 544158 y_: 5.3209e+06 z_: 5 pixelX_: 1552 pixelY_: 4193 image:
>> img_0585.jpg*
>> *x_: 544033 y_: 5.32088e+06 z_: 5 pixelX_: 2763 pixelY_: 1606 image:
>> img_0690.jpg*
>>
>> *The calculated easting offset for the georeferenced system: 544149*
>> *The calculated northing offset for the georeferenced system: 5.3209e+06*
>>
>> *Recalculated GCPs with offset:*
>> *x_: 107.7 y_: 21.9 z_: 5*
>> *x_: 8.7 y_: 1.2 z_: 5*
>> *x_: -115.6 y_: -22 z_: 5*
>>
>> *Reading mesh file
>> /home/ivan/odm_data/langley/reconstruction-with-image-size-2400-results/odm_texturing/odm_textured_model.obj*
>>
>> *Successfully loaded
>> /home/ivan/odm_data/langley/reconstruction-with-image-size-2400-results/odm_texturing/odm_textured_model.obj.*
>> *Position in model for gcp 3: x=13.1883 y=-2.29253 z=-15.2447*
>> *Error in Georef:*
>> *Less than 3 GCPs have correspondences in the generated model.*
>>
>> I understand that more than 3 GCP are needed to succeed.  Do you  have
>> more GCP available for the  Landley dataset?
>>
>> Could anybody provide a GCP list for any of the ODM sample datasets?
>>
>> Best regards,
>>
>> Ivan
>>
>> On Sun, Mar 1, 2015 at 8:32 PM, Stephen Mather <stephen at smathermather.com>
>> wrote:
>>
>>> Hi All,
>>>
>>> I was playing today with the Langley dataset, working on the
>>> georeferencing / orthophoto tests, and hadn't loaded enough (useable)
>>> points in my gcp file for the georeferencing / orthophoto generation.
>>>
>>> So, I added some more ground control points to odm_georeferencing_log.txt
>>> and wanted to rerun, but not everything. Since the latest step we can start
>>> from (at this time) is pmvs, here was the command I ran so that I wouldn't
>>> have to rerun all the matching and bundler:
>>>
>>> run.pl --resize-to 3000 --start-with pmvs
>>>
>>> It completed in 30 minutes instead of 8 hours, which was refreshingly
>>> short, and reran PMVS (point cloud model creation), meshing, mesh
>>> texturing, and orthophoto generation.
>>>
>>> Hope this helps,
>>> Best,
>>> Steve
>>>
>>> _______________________________________________
>>> OpenDroneMap-users mailing list
>>> OpenDroneMap-users at lists.osgeo.org
>>> http://lists.osgeo.org/cgi-bin/mailman/listinfo/opendronemap-users
>>>
>>>
>>
> 
> 
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