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+//Ex3_16
+// Image Sharpning using Un-Sharp Masking and High-Boost Filtering 
+// Version : Scilab 5.4.1
+// Operating System : Window-xp, Window-7
+//Toolbox: Image Processing Design 8.3.1-1
+//Toolbox: SIVP 0.5.3.1-2
+//Reference book name : Digital Image Processing
+//book author: Rafael C. Gonzalez and Richard E. Woods
+
+
+
+clc;
+close;
+clear;
+xdel(winsid())//to close all currently open figure(s).
+a=imread('Ex3_16.tif');
+[M N]=size(a);
+figure,ShowImage(a,'Original Image');
+title('Original Image','color','blue','fontsize',4);
+
+/////////////////////////// Laplacian Filtering /////////////////////////
+F=fspecial('gaussian',5,3);
+Image1=imfilter(a,F);
+figure,ShowImage(Image1,'Original Image');
+title('Filtered Image with gaussian Filter(3*3)','color','blue','fontsize',4);
+
+Unsharp_Mask=a-Image1;
+figure,ShowImage(Unsharp_Mask,'Original Image');
+title('Unsharp Mask Image','color','blue','fontsize',4);
+
+/////////////////////////// Un-Sharp Filtering /////////////////////////
+k=1;
+Unsharp=a+(k.*Image1);
+figure,ShowImage(Unsharp,'Original Image');
+title('Unsharp Filtered Image','color','blue','fontsize',4);
+
+/////////////////////////// High-Boost Filtering /////////////////////////
+k=4.5;
+High_Boost=a+(k.*Image1);
+figure,ShowImage(High_Boost,'Original Image');
+title('High_Boost Filtered Image','color','blue','fontsize',4);