first i picked a picture than i also made a matlab code. Than copyed the picture in jpg form in the matlab bin. in this code, i only gave 3 stage or color of the car.
CODE:
file_name = 'G:\Study materials\matlab\edited\mc-3.jpg';
X = imread(file_name);
figure(1) imshow(X)
I = rgb2gray(X)
figure(2) imshow(I)
BW1 = edge(I,'sobel');
figure(3) imshow(BW1)
BW2 = edge(I,'prewitt');
figure(4) imshow(BW2)
BW3 = edge(I,'roberts');
figure(5) imshow(BW3) ;
that's a simple image processing .....if you have any question please comment me about matlab and image processing .