New Morphological Features for Grading Pancreatic Ductal Adenocarcinomas

Algorithm 5

Post_Porocessing_PIPs  (pip_list).

Input: Pip list pip_list,

Method:

(1) trend1 ← NIL

(2) trend2 ← NIL

(3) for   i ←1 to (pip_list .length − 2) do

(4)  pip1 ← pip _ list.get (i)

(5)  pip2 ← pip _ list.get (𝑖+1)

(6)  pip3 ← pip _ list.get (𝑖+2)

(7)  if pip2.y > pip1.y then trend1 ← up

(8)  if pip2.y < pip1.y then trend1 ← down

(9)  if pip3.y > pip2.y then trend2 ← up

(10) if pip3.y < pip2.y then trend2 ← down

(11)  if trend1 = trend2 then

(12)   pip _ list.del (𝑖+1)

(13)   𝑖← 𝑖−1

(14)  end if

(15) end for