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Messages - Domingo

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1
General / Re: Systematic Z Error in Proportion to Altitude (Phantom 4 RTK)
« on: February 23, 2019, 11:17:27 PM »
Hello Paulo,

I have had a busy few days! However I got a chance to collect another dataset yesterday. It includes obliques. This seems to have fixed most of the problem, however there is still some error there. The error seems to be just a vertical shift though. I'm not quite sure where this is coming from yet. I will PM you a link to the data for you to take a look at.

The control points are in EPSG: 26734. I just use the Agisoft coordinate calculator to convert the photo locations to this system.

Dragline,

I was wondering if you sent me a PM regarding your last data set... Would like to have a look if possible,,,,


Hello Paulo
I just bought a Phantom 4 RTK + D-RTK 2 unit.
If you want I can send you a set of data measured on February 20, are taken with the latest activation of DJI, released that same day.
I can provide you with the photographs and all the files generated by the Phantom 4 RTK.
I can also send you the data measured by the base D-RTK 2, "RTCM data" and "User Log"
and the Rinex data (1 second) from a nearby refence station (10 km)

Greetings.

2
General / Re: Workflow to process the Photography of "PHANTOM 4 RTK"
« on: November 29, 2018, 08:01:34 AM »
I had problems uploading the photographs.
Attachment 2 more.
Greetings.

3
General / Re: Workflow to process the Photography of "PHANTOM 4 RTK"
« on: November 29, 2018, 07:49:48 AM »
Hello
Attached 4 photographs of information provided by the DJI technical service.

4
General / Re: Workflow to process the Photography of "PHANTOM 4 RTK"
« on: November 14, 2018, 07:52:16 PM »
Is it possible to send an example of such image from DJI with the accuracy values embed to the XMP meta data? It seems that the namespace where the values are written to is not supported, but it should be possible to implement the support for it quickly.

Attached link to download the file with 18 photographs taken with the Phantom 4 RTK, as well as, all the files generated by the drone.
https://www.dropbox.com/s/b38by1vpj68n0g4/Phantom%204%20RTK.rar?dl=0

5
General / Re: Workflow to process the Photography of "PHANTOM 4 RTK"
« on: November 10, 2018, 05:47:14 PM »
Hi Domingo,

Try to write the EXIF information of your imagery into an external CSV file using EXIFTOOL.
Follow this instruction: https://medium.com/@hunchly/bulk-extracting-exif-metadata-with-hunchly-and-exiftool-164d67c8d7e2

When you have generated the exif.csv file, open PhotoScan, load your images and click on the IMPORT icon in the reference pane (first icon from left). It will allow you to import camera locations (and orientations), not just GCP/marker information. Just make sure that the name in the label column matches the filename of your images.

If you can share your imagery again then I'll test it for you.

All the best.

Regards,
SAV


Thank you very much for your answer SAV

I'm doing the same as you, but from the file with extension * .RMK, generated by the Phantom 4 RTK.

In that file are the EXIF data of all the photographs, I edit it to keep only the data I need and import it following the same method.

My intention is to make PhotoScan automatically read the data of the accuracy of the coordinates as the Pix4d mapper does.
To avoid having to do a previous process before adding the photos in PhotoScan.

I would also like to know if to process some photographs with precision of 1 or 2 cm photocenters, taken with a Phantom 4 RTK, it would be necessary to modify the type parameters that I am using to process the photographs of a Phantom 4 PRO

Receives a warm greeting.

6
General / Re: Workflow to process the Photography of "PHANTOM 4 RTK"
« on: October 31, 2018, 06:03:31 PM »
Can you post your configured import window?

If I remember correctly, there is also a an option in the Preferences for loading the accuracy from file.

7
General / Re: Workflow to process the Photography of "PHANTOM 4 RTK"
« on: October 31, 2018, 04:28:43 PM »
I can give it also a try, If you can share the fotos.
Be sure that you have checked (under PhotoScan settings) "load xmp Data..."

Yes, I have the "load xmp Data ..." option activated
But when I add the photos, the precision it gives me is 10 meters, the standard configuration of Photoscan (attached image)

8
General / Re: Workflow to process the Photography of "PHANTOM 4 RTK"
« on: October 31, 2018, 04:15:49 PM »
Where can I download photos taken by phantom 4 rtk?

Attached link to download the file with 18 photographs taken with the Phantom 4 RTK, as well as, all the files generated by the drone.

https://we.tl/t-fQ3g2XPNRG

9
General / Workflow to process the Photography of "PHANTOM 4 RTK"
« on: October 30, 2018, 06:11:04 PM »
Hello partners:
I am trying to process a set of photographs taken with the Phantom 4 RTK.
The photographs have in their metadata the precisions in XYZ with which they were made.
When I upload the photos in the PhotoScan 1.4.3 does not recognize that data, it gives me the precision that PhotoScan has by default. 10 meters.
I have tried to load the same photos in Pix4D, if you load the precisions of XYZ (attached photograph).
Can someone tell me the workflow to process the photos taken with the Phantom 4 RTK?
Thank you very much for your cooperation and sorry for my English.
Greetings.

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