Computer graphics is the science of using mathematical algorithms to convert two-dimensional or three-dimensional graphics into the raster form of a computer display. Simply put, the main research content of computer graphics is to study how to represent the graphics in the computer, and use the computer to carry on the calculation, processing and display of graphics related principles and algorithms.

Also it can be said that the computer graphics is the inverse process of digital image processing and computer vision, computer graphics is to use the computer to draw the image, digital image processing is put outside the image is processed by computer, computer vision is according to obtain image to understand and identify the objects of the three-dimensional information and other information.