apply laplacian filter to image

msi_333 · **Posted:** Sun Mar 27, 2011 9:53 pm

Laplacian filter is a second derivative edge detector operator .Laplacian is more sensitive to noise than sobel and prewitt.Laplacian calculate the difference of center point to the surrounding pixels .

Code:

    clc;
   
    %% create a new figure to show the image . 
    newImg = imread('Water lilies.jpg');
    figure(1);
    imshow(newImg);
    figure(2);
     %% create laplacian filter. 
    H = fspecial('laplacian');
     %% apply laplacian filter. 
    blurred = imfilter(newImg,H);
    imshow(blurred); title('Edge detected Image')

 

shiying · **Posted:** Fri Jun 10, 2011 5:08 am

hi, do u know how to apply 3x3 laplacian filter with 8 at the center?

apply laplacian filter to image

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