Sensibility, relative error and error probability of projective invariants of planar surfaces of 3D objects

Presents the study of the sensibility, relative error and error probability of projective invariants of planar objects. The study is applied to configurations of groups of five points which define a planar object. The results are general for any type of projective invariant. The paper shows that given the precision (or tolerance) and the maximum allowed error probability, the sensibility and relative error can be used to decide the correct configurations for the matching procedure between the model and the projective view of a physical object. The last result is general for any type of geometric invariant.<>