Messages

91

General / Re: DEM error but GCP RMS is very small

« on: March 22, 2017, 02:51:30 PM »

Hello,

Thank you for your reply! The camera parameters I used are all the parameters in reoptimising, and in DEM generation I use dense point cloud and other parameters used default.

Thanks!

92

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.

93

Bug Reports / Re: NAD83 (2011) Prj fail in meta data

« on: December 13, 2016, 02:46:54 AM »

Hello Alexey,

Thank you very much, this solved my question! Thank you!

Best wishes,

94

Bug Reports / Re: NAD83 (2011) Prj fail in meta data

« on: December 06, 2016, 02:13:09 AM »

Does anyone find this is a problem? Any suggestions would be much appreciated!

95

Bug Reports / Re: NAD83 (2011) Prj fail in meta data

« on: November 24, 2016, 01:08:23 AM »

Hi Alexey,

Thank you for the explain, however, I find this issue occurs only when it is NAD83 (2011). If I change the GCS to EPSG:4269 NAD83, then the DEM/Ortho TIF will be readable like:
   GEOGCS["NAD83",
    DATUM["North_American_Datum_1983",
        SPHEROID["GRS 1980",6378137,298.2572221010002,
            AUTHORITY["EPSG","7019"]],
        AUTHORITY["EPSG","6269"]],
    PRIMEM["Greenwich",0],
    UNIT["degree",0.0174532925199433],
    AUTHORITY["EPSG","4269"]]

However, if I process the data in NAD83(2011) or with NAVD88, then it will return:
  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"]]

Would this be a problem only for NAD83 (2011)? Since if I use Compound PRJ it will return the header as Proj_CS as "noname", as well as DATUM "unknown".

Thanks a lot!

96

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.

97

General / Re: combined prj file error

« on: November 09, 2016, 09:36:35 AM »

Hi Yes I 've put the file in. So Nad83 can be converted to NAVD, but if with PROJ then didn't work.

98

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!

99

General / Re: Export Orthophotos in v 1.2

« on: October 31, 2016, 09:42:26 AM »

Hi Alexey,

Thank you, your answer helps! I find the reason and it fixed. Amazing, thanks!

Cheers,
Tim

100

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,