export points and marker's image coordinates

[JMR]

I guess there is no way of import/export pixel/image coordinates for feature points nor for markers. Am I wrong?
I think it could be an interesting addition as it would allow us test different feature extraction algorithms or use third party tools to place markers

[Alexey Pasumansky]

Hello LFA,

It is possible to export marker projection on any (or every) image using Python scripts.

And saving sparse point cloud in bundler format (using Tools -> Export cameras command) will give you the set of feature points with their coordinates and projections.

[Oli63]

Thank you, good to know this.

What's interesting to me is, what precision do you guys achieve with your models? My own errors range between 1 and 10 cm horizontally and around 20 cm vertically. Currently I am thinking about ways how to improve these values, especially vertically.

Oliver

[fpbv]

Oliver

Are you talking about aerial photos?
If so I think you are good enough, otherwise you should see your makers positions and even about the camera resolution/lens.