Use retouching software to adjust the size, color and resolution of the picture. Generally speaking, the pictures cited in the paper need to be adjusted in gray scale.

Position of pictures in the text: All kinds of pictures inserted in the text should be centered and resized according to the needs of typesetting, but the width of the pictures should not exceed the width of the text. Color: In addition to special-purpose pictures, illustrations should try not to use color pictures, but should be adjusted to grayscale.