3D computer graphics , 3D modeling is the process of developing a representation of any three - dimensional surface of the object or objects through a special software . This product is called a 3D model . It can be displayed as a two -dimensional image through a process called 3D rendering or used in a computer simulation of physical phenomena . This model can also be physically created using 3D Printing devices . Models can be created automatically or manually . Manual process modeling using geometric data for 3D computer graphics is similar to plastic arts such as sculpting . New techniques in 3D modeling has begun to emerge . New technology departs from traditional techniques began to appear , such as Curve Modeling Controlled movement that emphasizes modeling 3D objects instead of traditional modeling static shape . 3D models are widely used anywhere in 3D graphics industry . The use of 3D graphics on computers continues to grow in the world of TV , Game , Movie 3D , Desi