Hi folks,
I'm having difficulties in reduce the marker error (pix) and would like to know if somebody can help me with this.
I used Total Station to get the coordinates and I'm using the marker detect tool (cross non-coded) to project them in the images.
My workflow is:
1. Add images and uncheck the cameras
2. Align the photos (Key point = 120.000 and Tie point limit = 0)
3. Delete the reprojection error points with 0.5 and optimize
4. Take average reprojection error in pixels from the Reference pane and use this value as Tie Point accuracy (in pixels);
5. Optimize the camera alignment
6. Add markers' projections automatically through marker detection
7. Load the coordinates
8. Take reprojection error for markers from the Reference pane and use this value as Marker Accuracy parameter in the Reference pane settings;
9. Optimize the camera alignment.
I repeat the optimization based on markers after refining the Marker Accuracy until the optimization results are no longer significant.
Therefore, my results are not so good. I need a precision of millimetres and I'm getting 4 or 5 centimetres.
Somebody can help me?
All the best!