Messages

1

General / Networking ?

« on: February 25, 2019, 01:40:04 PM »

Hello,
I would like to use a second computer to fasten the processes with Metashape.
I’m using apple computers. Where I can find a step by step setting tutorial ?
Do I need a extra licence for the 2nd computer ?
Thanks.

2

General / Re: Export DEM to Litchi

« on: January 07, 2019, 06:45:52 PM »

So what WGS84 co-ordinates do you expect to see? i.e. what is the position of the Lower Left corner of your DEM?

Dave

Thanks I've got some evolution with my problem.
I have now the datas in degres so until there it is ok.
Now Litchi support send me a file as a example with this information at the first lines when opened with text editor :
ncols         420
nrows         441
xllcorner     10.2004062543
yllcorner     59.7391018596
cellsize      0.00008978907956077
nodata_value  -9999.0

In the file generated with Photoscan I have this lines :
ncols        5769
nrows        5782
xllcorner    3.69843179636208
yllcorner    43.9510287132494
dx           2.460120000000039e-06
dy           1.777149999999827e-06
NODATA_value -32767.000

If I replace the dx           2.460120000000039e-06, dy           1.777149999999827e-06 lines by the value of the send file by cellsize      0.00008978907956077 I have a result when importing to Litchi but an erratic one.
So my question is how to get the cellsize line (with) correct value corresponding to my Photoscan generated DEM. BTW this value is in °.

3

General / Re: Export DEM to Litchi

« on: January 04, 2019, 08:01:38 PM »

Hello Xero,

Have you tried to select "Arc/Info ASCII Grid (*.acs)" file format when exporting DEM from PhotoScan?

I tried but still not good.

I contacted Litchi support and they answer me that :
"This DEM file isn’t in the correct format. xllcorner, yllcorner and cellsize must be in degrees (WGS-84 coordinate system)"

When I open the DEM file generated by Photoscan with excel
the xllcorner value is : 10.2004062543
the yllcorner value is : 59.7391018596

Any idea what are this values and how to convert them in degrees ?

4

General / Export DEM to Litchi

« on: December 30, 2018, 05:46:17 PM »

Hello every one.
For the people who know litchi (the drone way app) there is a possibility to import a DEM in the mission HUB but only to one format, which is : "WGS-84 Esri ASCII Grid".
What I would like to do it is to create such formated file with or from an DEM generated by Photoscan.
If any one know how to do so... big hugs and thanks 

5

General / Orthomosaic not correct

« on: February 15, 2018, 07:34:54 PM »

Hello,
When I export an Orthomosaic I get a bad result. (cf attachment)

Any idea to get a correct one?

6

General / DJI exif

« on: February 15, 2018, 05:53:43 PM »

Hello before photo alignement I would like to use the Dji DNG pictures Exif data for the process, in the Chunk this data do not appears, I just have this columns with data : Long, Lat, Altitude, Accuracy, and Error.

Please see exif data sample I'm interested to include and be usable, below:

<drone-dji:AbsoluteAltitude>+267.23</drone-dji:AbsoluteAltitude>
         <drone-dji:RelativeAltitude>+32.60</drone-dji:RelativeAltitude>
         <drone-dji:GimbalRollDegree>+0.00</drone-dji:GimbalRollDegree>
         <drone-dji:GimbalYawDegree>-72.00</drone-dji:GimbalYawDegree>
         <drone-dji:GimbalPitchDegree>-90.00</drone-dji:GimbalPitchDegree>
         <drone-dji:FlightRollDegree>+0.00</drone-dji:FlightRollDegree>
         <drone-dji:FlightYawDegree>-71.90</drone-dji:FlightYawDegree>
         <drone-dji:FlightPitchDegree>-1.40</drone-dji:FlightPitchDegree>