A point cloud system having two separate sets of points, each of these sets having different points of view, creating data with potentially occluded points in the point cloud. An accelerated approach of close sister points is used to determine which occluded points can be removed by looking out from an assumed non-occluded point, then finding the closest point in the next set of points, then looking back into the first set of points, or jumping to the closest not occluded point and looking back, and if this second sister is close to initial point, it is a close sister.