 Due to the limited accuracy in the matching process of 3D keypoints, the presence of outliers, probably in very large numbers, is common in many real-world applications  .
<clarity>  Due to the limited accuracy in the matching process of 3D keypoints, the presence of outliers, probably in very large numbers, is common in many real-world applications  .
 Due to the limited accuracy in the matching process of 3D keypoints, the presence of outliers, probably in very large numbers, among the putative vector or point correspondences in real-world applications .