Multilevel Thresholding for Image Segmentation Using Mean Gradient

Algorithm 2

Preprocessing pseudocode for DIBCO.

(1)	Input: gray scale image , k parameter
(2)	Output: preprocessed gray scaled image
(4)	//median filtering
(5)	//adaptive histogram equalization filtering
(6)	//image complement
(8)	) //opening with structural element 1
(9)	applying equations (8) and (9) on //background and foreground masks
(10)	) //mask estimation with structural element 2
(11)	//first foreground compensation
(12)	//median filtering
(13)	) //second compensation
(14)	//contrast adjustment
(15)	//closing operation