Pulmonary Nodule Detection Based on Multiscale Feature Fusion

Algorithm 1

-means++.

Input:The set of pulmonary nodule external frame , The number of collection centers

Output:Cluster center of pulmonary nodule external frame

1 Choose a cluster center from randomly

2 Repeat

3 Select new cluster center with probability

4 Until Get clustering centers

5 Repeat

6 for eachdo

7 Set the point in to cluster closest to cluster center

8 end for

9 for eachdo

10 Calculate the centroid of cluster :

11 end for

12 Until no longer changes