i have problem in dataset in neural network

hi , i have dataset that consist of 20 image of two different cars, i want to enter this image into neural network how can do that??? i resize the image into 200x200 ...i want to enter the images into neural network from my database....how to do that ,,, I asked http://www.mathworks.com/matlabcentral/answers/129790-what-the-different-between-edge-detection-and-morphologic-operations-of-erosion-and-dilation...but no one help me....can you help me please????I need your help...thank you very much