Affine invariant image comparison under repetitive structures

Full Title: “Affine invariant image comparison under repetitive structures”

Authors: Mariano Rodríguez and Rafael Grompone von Gioi

Conference: ICIP 18

Abstract: We focus on the problem of affine invariant image comparison in the presence of noise and repetitive structures. The classic scheme of keypoints, descriptors and matcher is used. A local field of image gradient orientation is used as descriptor and two matchers are proposed, based on the a-contrario theory, for handling repetitive structures. The affine invariance is obtained by affine simulations. The proposed methods achieve state-of-the-art performances under repetitive structures.

Read / Download this article Source code (on Github) Tester source code (on Github)

Estimating tilt tolerances

In order to estimate the tilt tolerance of AC-Q, AC-W, SIFT, and RootSIFT, under repetitive structures, a MATLAB function in our Tester source code was used. The github repository already comes with the image data base proposed in this paper. They are called upon by “tolerance_test_ICIP.m” .

Use the this guide to reproduce our tests !