Three-dimensional sources have two kinds: one is the choice of grating, the other is the choice of source image. The basic requirements to do three-dimensional diagram is to choose grating of good quality and the original images or material need be as large as possible,such as, types of photos should use good scanner to scan and scan accuracy should be in accrodance with frame size. Compositionof apicture should have a strong sense of hierarchy; The motif is outstanding, the color is bright and beautiful and the contrast is strongly sharp.