NameError: name 'wgs84' is not defined in 1c-make-pix4d.py

Hi again! I’ve been trying to use this project on a custom aerial dataset (crop_field). I tried running 1c-make-pix4d.py with

python3 1c-make-pix4d.py crop_field

and it yielded

Traceback (most recent call last):
  File "/Users/ImageAnalysis/scripts/1c-make-pix4d.py", line 26, in <module>
    pose.make_pix4d(image_dir, args.force_altitude, args.force_heading, args.yaw_from_groundtrack)
  File "/Users/ImageAnalysis/scripts/lib/pose.py", line 229, in make_pix4d
    wgs84.geo_inverse( cur[1], cur[2], next[1], next[2] )
NameError: name 'wgs84' is not defined

Am I missing a package or dependency? I’ve tried looking for a workaround but didn’t come across anything related

[clolsonus]

Ok, there is an issue there, the message is coming from the aura-props code when overlaying one tree on top of another. Likely the whole “mount” subtree is lost which means the project won’t default to the proper camera mounting (straight down.) I don’t fully understand why I haven’t seen this before and why this case isn’t accounted for in the aura-props code. I need to dig deeper and try to understand and refresh my memory on that, but I probably don’t have time today. For now I woudl recommend adding the following snippet to your ImageAnalysis/config.json file right after camera make, model lines (and before width):

    "mount": {
        "pitch_deg": -90.0,
        "roll_deg": 0.0,
        "yaw_deg": 0.0
    },

The sequoia meta data for roll, pitch, and yaw is for the aircraft (and yaw is completely wrong all the time.) So you need to trigger the code --yaw-from-flighttrack and tell the system the mount offset of the camera when creating the pix4d.csv file.

[ArunLukeDsouza]

My bad I should’ve been more clear about it. I meant the DJI dataset yields similar errors to the Sensefly dataset when I deleted the configuration files that came with them keeping only the images, to see if I could reproduce your results from scratch

When I run

python3 1b-set-camera-config.py phantom-23-20190731

It yields

Camera: ../cameras/DJI_FC6310S.json
Unknown child type: mount <class 'props.PropertyNode'>

And when I run

python3 3a-matching.py phantom-23-20190731

It yields this massive error

Loading keypoint (pair) matches:
  0%|                                                   | 0/648 [00:00<?, ?it/s]phantom-23-20190731/ImageAnalysis/meta/DJI_1012.match:
  matches load error: <class 'FileNotFoundError'>: [Errno 2] No such file or directory: 'phantom-23-20190731/ImageAnalysis/meta/DJI_1012.match'
phantom-23-20190731/ImageAnalysis/meta/DJI_1013.match:
  matches load error: <class 'FileNotFoundError'>: [Errno 2] No such file or directory: 'phantom-23-20190731/ImageAnalysis/meta/DJI_1013.match'

Which goes on until the last image

phantom-23-20190731/ImageAnalysis/meta/DJI_1659.match:
  matches load error: <class 'FileNotFoundError'>: [Errno 2] No such file or directory: 'phantom-23-20190731/ImageAnalysis/meta/DJI_1659.match'
100%|██████████████████████████████████████| 648/648 [00:00<00:00, 19809.98it/s]
NED reference location: [43.92207759004631, -95.90702347586672, 0.0]
Initializing the SRTM interpolator
SRTM: loading DEM tiles
SRTM: parsing .hgt file: /var/tmp/N43W096.hgt.zip
SRTM: constructing LLA interpolator
SRTM: constructing NED area interpolator
Traceback (most recent call last):
  File "/Users/arun/Downloads/AERO2ASTRO/Project GIS/ImageAnalysis/scripts/3a-matching.py", line 102, in <module>
    surface.update_srtm_elevations(proj)
NameError: name 'surface' is not defined