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Author Topic: Transformation in AGISOFT (WGS84 --> ETRS89 --> DB_REF)  (Read 1577 times)

alexwinz

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Transformation in AGISOFT (WGS84 --> ETRS89 --> DB_REF)
« on: March 15, 2019, 01:00:48 PM »
Hi everyone, :)

we have right now a problem using Agisoft with the perfect exports in the coordinatesystem "DB-REF", which is based on Bessel.
Actually we fly in WGS84 and usually we, and also others like ESRI, transform the WGS84 data with a transformation path from WGS84 --> ETRS89 --> DB-REF (WGS84 -> GR80 --> Bessel). So is there any option to implementate our transformation in our python script before generating the massive point cloud. Otherwise we have to do it afterwards, which I would not recommend, cause of the size.

So my first question: Do you have DB_REF?
Is it possible to transform WGS84 to DB-Ref using ETRS89?
How can we do it? Can we do it in python, too?

Thank you very much?

Alex

Alexey Pasumansky

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Re: Transformation in AGISOFT (WGS84 --> ETRS89 --> DB_REF)
« Reply #1 on: March 15, 2019, 02:52:29 PM »
Hello Alex,

You can convert to DB-REF coordinate system directly from WGS84, providing that target system has TOWGS84 parameters defined. You can include them either to the PRJ file, if the coordinate system is loaded from it, or modify manually via Datum Transformation Settings dialog.

For Python approach, the import of external PRJ file that has been configured in advance, might be a better way.
Best regards,
Alexey Pasumansky,
Agisoft LLC