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Author Topic: GCP Precision : difference between 1.2.6 vs 1.4 5650  (Read 2142 times)

pastouf

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GCP Precision : difference between 1.2.6 vs 1.4 5650
« on: January 29, 2018, 08:37:32 PM »
Hello,

On my last project. Markers are bad précision ( > 10cm)
812 photos, 12 markers
On 1.4 : 0.119 cm of précision
On 1.2.6 : 0.012 cm of précision

Why this différence?

Coordinate systeme : 3949

I have not tested version 1.3.x

Align is mode Medium or high, and without Geotag on photo.
After insert Marker position, and optimisation, precision is very different between this 2 versions.

An idea?

Alexey Pasumansky

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Re: GCP Precision : difference between 1.2.6 vs 1.4 5650
« Reply #1 on: January 29, 2018, 09:01:35 PM »
Hello pastouf,

Do you compare the results for alignment performed in the same accuracy? Also what are the settings in the Reference pane settings dialog?
Best regards,
Alexey Pasumansky,
Agisoft LLC

pastouf

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Re: GCP Precision : difference between 1.2.6 vs 1.4 5650
« Reply #2 on: January 29, 2018, 11:49:04 PM »
in attach view of setting for each version
only différence on camera accuracy in deg
« Last Edit: January 30, 2018, 12:55:42 AM by pastouf »

pastouf

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Re: GCP Precision : difference between 1.2.6 vs 1.4 5650
« Reply #3 on: January 29, 2018, 11:56:47 PM »
I found...
On last version and not on beta. system and marker

system and marker was not in the same coordinate system

When i re-install last version it was not 5650 but 5076...

i dont understand why system coordinate was in 3945 and not in 3949 ???

More test and comparaison tomorrow, but it's my fault...

Very very sorry.
I stop coffe...

pastouf

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Re: GCP Precision : difference between 1.2.6 vs 1.4 5650
« Reply #4 on: January 30, 2018, 12:07:36 AM »
finally, it's not good.
Project alignement with 1.2.6 and add marker is good after in 1.2.6 or 1.4
But Projet Alignement with 1.4  and add marker , so precision is more than 11cm ???