need code for weight median filter for de-noising of a gray scale image

here is an image but i couldn't get a valid code on net the code that i found iy didnt give me back a gray scale image with removed noise but the output of those code is too dark so hope i'll get some help here

so attaching the image here and waiting for response

Answer 1

[Image Analyst]

Did you try

filteredImage = medfilt2(grayImage, [9, 9]);

??? Exactly what code did you find or not find, or run? Did it give you an output image at all (even if it was dark) or not? Your statement is not clear.

[Filza Ashraf]

i have been using this code

I = imread('p1.png');

I = double (I);

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

a = double(Z);

b = a;

W = [1,1,1; 1,1,1; 1,1,1]/9;

[row col] = size(a);

for x = 2:1:row-1

for y = 2:1:col-1

a1 = [W(1)*a(x-1,y-1) W(2)*a(x-1,y) W(3)*a(x-1,y+1) ... W(4)*a(x,y-1) W(5)*a(x,y) W(6)*a(x,y+1)... W(7)*a(x+1,y-1) W(8)*a(x+1,y) W(9)*a(x+1,y+1)];

a2 = sort(a1);

med = a2(5);

b(x,y) = med;

end

end

figure(3); imshow(uint8(b)); figure(4); imshow(uint8(Z));

[Image Analyst]

Try

imshow(uint8(b), []);

Answer 2

[sairahul thota]

sir i need code for the removal of salt and pepper noise in image using adaptive median filter

[Image Analyst]

See attached.