Automatic Histogram Specification for Glioma Grading Using Multicenter Data

Algorithm 1

HSASR algorithm pseudocode description.

(i)	Input: Mixed dataset F, data sample number N, number of each sample slice K
(ii)	Output: Optimal reference slice
(1)	Step1: Coarse search
(2)	Function HSBM (n, F1, )//Histogram specification based on brain MRI
(3)	{
(4)	F1 = Random (range (0, N), F  30%)//Random selection of 30% of dataset
(5)	For each do
(6)	For each do
(7)
(8)
(9)	Calculate:
(10)	End for
(11)
(12)	End for
(13)	}
(14)	Sort max()
(15)	= Max(F2)
(16)	For each do
(17)	if then
(18)	Select
(19)	end
(20)	End for
(21)	Select the optimal set F3
(22)	Step 2 Fine search
(23)	Initializes Pointers
(24)	For each //Search both ends
(25)
(26)	For
(27)	HSBM (n, F1, )
(28)	End for
(29)	End for
(30)	For each
(31)
(32)	For
(33)	HSBM (n, F1, )
(34)	End for
(35)	End for
(36)	Output: select the first optimal slice