I don’t have your ‘car’ and ‘road’ images, so I made a little green ‘plus’ sign appear in the centre of a yellow pepper. You assign the inserted image just as you would address any other matrix, remembering that in an image, the y-axis is the reverse of a plot y-axis. (I’m attaching the green plus sign image.) Perhaps this will help get you started:
I = imread('peppers.png');
p = imread('dndCopy.png');
I(200+[0:15],260+[0:15],:) = p; % Define ‘I’ Where You Want The ‘car’ (Or ‘+’) To Appear
figure(1)
image(I)
