[core][components matching] Adds check for similar vectors in sift

darfix/core/componentsMatching.py

@@ -162,7 +162,7 @@ class ComponentsMatching():
 
         elif method == Method.sift_feature_matching:
             keypoints = self._create_sift_keypoints()
-
+            best_v = []
             mp = sift.MatchPlan()
             # Match components with id1 and id2
             for i, kp1 in enumerate(keypoints[id1]):
@@ -174,7 +174,13 @@ class ComponentsMatching():
                                reverse=True):
                 # Only add match if neither x nor y are already in the list.
                 if x not in final_matches.keys() and y not in final_matches.values():
-                    final_matches[x] = y
+                    v = numpy.array([numpy.median(good[(x, y)][:, 1].x - good[(x, y)][:, 0].x),
+                                     numpy.median(good[(x, y)][:, 1].y - good[(x, y)][:, 0].y)])
+                    if not numpy.any(best_v):
+                        best_v = v
+                        final_matches[x] = y
+                    elif numpy.linalg.norm(best_v - v) < tol:
+                        final_matches[x] = y
 
         elif method == Method.euclidean_distance:
             for i, X in enumerate(self.components[id1]):