sharp.m

Some image filtering functions in matlab. Includes: Laplace Sharpening, UnsharpMask, Median filter

close all;
clear all;
clc;

filename = 'peppers2_512x512';
ext = 'png';

img = imread([filename , '.', ext]);

img_um7 = imgUnsharpMask (img, load_mask('average'), 0.7);
img_um4 = imgUnsharpMask (img, load_mask('average'), 0.4);
img_lap1 = imgLaplaceSharp (img, load_mask('laplace'),0.1);
img_lap2 = imgLaplaceSharp (img, load_mask('laplace'),0.2);
imshow(img);
title('Original image');
WriteToFile(img_um7, filename, 'UnsharpMask[0.7]', ext);
title('UnsharpMask using average filter, k=0.7');
WriteToFile(img_um4, filename, 'UnsharpMask[0.4]', ext);
title('UnsharpMask using average filter, k=0.4');
WriteToFile(img_lap1, filename, 'Laplacian[0.1]', ext);
title('Laplacian filter, k=0.1');
WriteToFile(img_lap2, filename, 'Laplacian[0.2]', ext);
title('Laplacian filter, k=0.2');