1. Method for object recognition applied to a digital image called the query and to a digital image called the target in which: a) simulating from each digital image a plurality of digital rotations and at least two digital tilts different from 1 in order to develop a simulated image for each rotation-tilt pair; and b) applying an algorithm generating values that are invariant in translation, rotation and zoom onto the simulated images in order to determine local characteristics, called SIF (scale invariant features), used for recognising similar or identical objects between the query and the target.