apply sobel filter to image

sobel operator is used for edge detection using first derivative.Horizontal and vertical components used .Gradient is the square root it taken for the sum of two components .

Code:

    clc;
   
    %% create a new figure to show the image . 
    newImg = imread('Water lilies.jpg');
    figure(1);
    %% show the loaded image.
    imshow(newImg);
    
  
    figure(2);
    %% convert RGB to gray scale.
    I = rgb2gray(newImg)
    imshow(I);
    %% apply sobel filter.
    size(I)
    BW = edge(I,'sobel',0.1) ;
    imshow(BW);
 

Attachments:

sobel.GIF [ 54.99 KiB | Viewed 25982 times ]

_________________
M. S. Rakha, Ph.D.
Queen's University
Canada

Author: DrRakha
Mastermind

Posts: 2715
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