apply prewitt filter to image

Sun Mar 27, 2011 9:32 pm

prewitt is one of the well known edge detection filters .it is similar to sobel.It is a first derivative filter.here is a MATLAB example :

Code:: clc; %% create a new figure to show the image . newImg = imread('Water lilies.jpg'); figure(1); %% convert RGB to gray scale. grayImage= rgb2gray(newImg) imshow(grayImage); figure(2); %% apply prewitt filter. afterFilter = edge(grayImage,'prewitt') imshow(afterFilter);

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