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Topics - Phogi

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31
General / DEM error but GCP RMS is very small
« on: March 22, 2017, 10:43:32 AM »
Hi Alexey,

I met a similar issue as the thread showed before: http://www.agisoft.com/forum/index.php?topic=2151.15
But I tried both uncheck the geotags or set the GCPs to 0.001 etc., the DEM comes out will be varied to about 10 cm at some GCPs.

Could you give some suggestions of how can force the model to match with the GCPs better?

Thanks a lot.


32
Bug Reports / NAD83 (2011) Prj fail in meta data
« on: November 16, 2016, 06:10:40 AM »
Hi,

I'm trying to work my data on NAD83(2011) epsg: 6318, but then when I export the DEM, its metadata will give

GEOGCS["NAD83(2011)",
    DATUM["unknown",
        SPHEROID["GRS 1980",6378137,298.2572221010002,
            AUTHORITY["EPSG","7019"]],
        AUTHORITY["EPSG","1116"]],
    PRIMEM["Greenwich",0],
    UNIT["degree",0.0174532925199433],
    AUTHORITY["EPSG","6318"]]

The prj is defined by PhotoScan. The same issue will happen if I define my prj with geoid definition in it, that the PROJ will be "unknown" in this case.

Is it a bug or I misunderstand the way it should work?

Thanks a lot for any help on this.

33
General / combined prj file error
« on: November 09, 2016, 04:06:42 AM »
Hi,

I'm trying to project the coordinates with adding the geoid 12B file, however, when I combined the prj file PhotoScan gives me error message "vertical datum missing". Can anyone help me to find what's wrong in this prj definition?

The prj file is attached.

Thanks very much!

34
Python and Java API / importDEM python error
« on: October 25, 2016, 10:01:42 AM »
Hi everyone,

I'm new to using Python scripting for PhotoScan, and I found in the manual there is an "importDem" function. I have a geotiff DEM, but when I use the command chunk.importDem('path.tif'), I will get

Finished processing in 0 sec (exit code 0)
and False

Then Error: Empty frame path. I searched this error and tried to use doc.save before this step, but still can't import the DEM file.

Can anyone help me with this problem?

Thanks a lot.

Best regards,

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