Matlab Program 4 noise

Human Face Recognition

Matlab Program 4--Noise inserted by function imnoise in same pictures

I = imread('cara1.jpg');

J= imread('cara1.jpg');

Ja = imnoise(I,'salt & pepper',0.02);

%BW1 = im2bw(I,.5);

%BW2= im2bw(J,.5);

BW3 = edge(I,'canny');

BW4 = edge(Ja,'canny');

imshow(BW3);figure;

imshow(BW4);figure;

%cov(count(:,1))

p=corr2(BW3,BW4);

%p=BW1 * BW2;

[X,Y]=meshgrid(-1:.005:1);

Z=peaks(p);

%imshow(p);figure;

%plot(Z,p);

mesh(X,Y,Z);

Z = fspecial('gaussian');

figure, freqz2(Z,[64 64]), axis([-1 1 -1 1 0 1])

Figure1

Figure2

Figure3

Here two same pictures are used but noise is inserted in one of them by using imnoise() function. Three parameters are passed through this function. First one is the variable where the picture is saved in which noise is to be inserted, second one is the type of noise, third one is parameter.

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