How accurate is POSIT estimation?

Question

Consider I have a imaging system of X-ray, the image has no distortion and the resolution of the image obtained is of 2048*2048

1) How accurate will the POSIT algorithm provide me when i estimate with respect to a defined object?

2) Would comparing two different POSIT values(by changing the orientation of defined object) with respect to one other gives me a measure of POSE error in rotational and translational values respective to the object?

Thanks in advance....

Answer 1

I assume that by "no distortion" you mean that the source is well approximate as a point one.

The accuracy will be limited by how well you can detect and match point features on the object (or rather, "in" the object, as your images are integrals of opacity), and by how well separated in depth the feature themselves are.