No calibrated cameras and no path from reference camera

PIX4Dmapper PIX4Dmapper Questions/Troubleshooting
1

Hello,
I’m having these errors/warnings:
[Warning]: No path from reference camera to 8882

[Warning]: No path from reference camera to 9042

Processing: Write matches.

Processing: Substep Camera calibration finished.

[Error]: No calibrated cameras.

Processing: Substep Report generation started.

Processing: Read keypoints.

Processing: Substep Report generation finished.

[Error]: Error e0046: Processing failed. No calibrated cameras.

[Error]: Error building pointcloud structure

Flight parameters:

  • Matrice 300 RTK with the Micasense P-DUAL
  • Flight over tree plantation
  • Flight at 45 meters
  • 80% front and side overlap
  • 5 m/s
  • 1 picture every 3s

Best regards,
Léa

2

Hi Léa,

There can be many reasons why there are no calibrated cameras. For example, image quality is poor (blurry images, overexposed, etc.), or there is too little overlap between the images.
Or the image content is not appropriate for photogrammetry due to low texture (water, glass, sky, etc.).

I see that you flew with one picture every three seconds. This might not be the best acquisition method. Are you able to fly an automated mission with preset image overlap settings? This is much better than a timed interval as it ensures proper overlap for every image.

3

Hi,
I can fly with an automated mission with preset image overlap settings but I don’t know how well it’s going to work between the camera settings and the flight mission settings of the drone. My camera is not directly connected to the drone, so while the drone is going to do the terrain follow, if I set my camera to do an overlap of 85% and set my mission with an overlap of 85% with the drone I don’t know if its going to be done properly.

4

However, the decision on how to fly the mission is yours. The project will likely benefit from better and more consistent overlap.