New Morphological Features for Grading Pancreatic Ductal Adenocarcinomas

Algorithm 1

Selection_Epithelial_Nuclei (𝓝).

Input: A set of nuclei 𝓝, A original lumen boundary 𝐁^𝐎

Output: A set of epithelial nuclei 𝓝^𝓔

Method:

(1)  𝓝^𝓔← {}

(2) for all point 𝑝  in  𝐁^𝐎  do

(3) n ← getNearestNuclus (p, 𝓝)

(4) 𝓝^𝓔← 𝓝^𝓔∪ n

(5)   end for

(6)   return   𝓝^𝓔