I am trying to use images taken with a DJI mini 2 to  create an orthomosaic in ArcGIS Pro. The Ortho Mapping workflow in  ArcGIS requires camera parameters for the photogrammetric correction. I  have found a post with such parameters for the Mavic 2 Pro in the DJI Forum (https://forum.dji.com/thread-206289-1-1.html). I'd be grateful if someone could share the respective camera parameters for the DJI mini 2.

  
  

The parameters required by the Ortho Mapping workflow in ArcGIS Pro are:

  
  

Camera Maker (here, 'DJI' was pre-selected after loading images taken with the DJI mini 2)

  

Camera  Model ('FC7303' is shown in this field, but I haven't been able to  confirm whether this is the correct number for the DJI mini 2)

  

Focal length (mm) ('4.49' is shown, but I haven't been able to confirm whether this is the correct value for the DJI mini 2)

  

Pixel  Size on the Sensor (in mm)  ('0.00176509' is shown, but I haven't been  able to confirm whether this is the correct value for the DJI mini 2)

  

Columns ('4000' is shown, but I haven't been able to confirm whether this is the correct value for the DJI mini 2)

  

Rows ('2250' is shown, but I haven't been able to confirm whether this is the correct value for the DJI mini 2)

  

Principal Point X0 (mm) Y0 (mm) (both fields are empty)

  

Radial Coefficients K1  K2  K3 (all three fields are empty)

  

Tangential Coefficients P1  P2 (both fields are empty)

  
  

There  is also a field called 'Camera File' with a button next to it that  opens a window to locate a file on the local hard drive, suggesting that  there may be files available that contain the set of camera parameters  listed above. The information concerning possible file formats lists  CAM, CSV and TXT as options.

  
  

Any help would be much appreciated.

  

I gave up and started using mapsmadeeasy.com.

blue_canyon21 Posted at 10-29 19:22
I gave up and started using mapsmadeeasy.com.

https://www.youtube.com/watch?v=UdqMAfBXxC4

Thanks a lot! I'm still hoping to get the data for the lens and the sensor in the DJI mini 2, but it's good to know that there are applications that have the data for photogrammetric correction built in.

blue_canyon21 Posted at 10-29 19:22
I gave up and started using mapsmadeeasy.com.

That looks pretty good.  I bet you could use their app to capture the images and then WebODM to process them for free offline.

I personally prefer DroneLink + WebODM locally or DroneLink + MapsMadeEasy (for image processing) if I need to share result.

DAFlys Posted at 10-30 00:26
That looks pretty good.  I bet you could use their app to capture the images and then WebODM to process them for free offline.

You don't need a third party to process the pictures. Mapsmadeeasy.com will process it for you for free as long as the final result is less than 3 gigapixels.

I've done residential properties, farm equipment lots, farmers' fields, solar farms, reservoirs, and city parks using this and haven't had to pay a dime yet.

blue_canyon21 Posted at 10-30 08:46
You don't need a third party to process the pictures. Mapsmadeeasy.com will process it for you for free as long as the final result is less than 3 gigapixels.

I've done residential properties, farm equipment lots, farmers' fields, solar farms, reservoirs, and city parks using this and haven't had to pay a dime yet.

oooh,,   Even more reason to try it.