A new scene matching algorithm during optical aided navigation of aircraft

The Affine Scale-Invariant-Feature-Transform (ASIFT) algorithm extends the SIFT method to the fully affine invariant. ASIFT matched the real-time images and reference images that are usually obtained in different scales, different viewpoints, and different imaging condition; even different CCD had a good robustness. The classical algorithms of image matching hardly get correct matches in these disadvantageous conditions. Affine-SIFT (ASIFT) as compared with the classical SIFT and MSER, which consider the best algorithm at the aspect of the affine invariant. The simulation results show that the ASIFT method provides robust image matching during optical aided navigation and is more robust than traditional methods.