Forums Matlab Matlab Based Image and Video Processing REMOVING NOISE FROM IMAGE


Link to this post 02 Sep 14


Can you please provide me matlab program to remove noise from image.

Thank you.

Link to this post 04 Sep 14

Kindly go thru this link

the example above will give you some insights to implement in colour image.

I = imread('eight.tif');
J = imnoise(I,'salt & pepper',0.02);
K = medfilt2(J);
figure, imshow(J), figure, imshow(K)

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Link to this post 09 Oct 14

Hi sir, this is Ammahi presently doing my BE. I am doing project on Recursion algorithm for noise removal in images....I thoroughly gone through the ieee paper but getting lot of errors when i wrote the matlab code. Please help me to write the code.
I am providing the link of paper.

A. Intelligent Recursive Algorithm (IRA)
Input – Noisy Image h
Step 1: Compute X
for every pixel repeat steps from 2 to 7
Step 2: Initialize w = 3
Step 3: If X(i,j) ≠ Impulse pixel
goto step 7
Step 4: Δi,j = { h(i1,j1) | i-(w-1)/2 ≤ i1 ≤ i+(w-1)/2,
j-(w-1)/2 ≤ j1 ≤ j+(w-1)/2}
b=no. of black pixels in the window
w=no. of white pixels in the window
Step 5: If Δi,j ≠ NULL
p(i,j) = mean(Δi,j)
d(i,j) = | h(i,j) – p(i,j) |
else if (w < wmax)
goto step 4
if (b>w)
Step 7: Goto next pixel
Step 8: Calculate threshold t, from detailed coefficient
matrix d
for every pixel
Step 9: If (d(i,j)>t)

this is the algorithm please help me with the code sir.

Link to this post 09 Oct 14

Hello ammayai

we could definitely help to debug the code.But you have to start writing the code.

for basic syntax

let me know if i could be of any help

Link to this post 02 Jan 15

can u please provide me matlab code for ezw,spiht compression algorithms for comparison purpose.

Link to this post 06 Jan 15

Both the algorithms could be downloaded form mathworks file exchange