Rendering is one of the major sub-topics of 3D Computer Graphics. Rendering is used in architecture, video games, simulators, movie or TV visual effects, and design visualization. Rendering is the process of generating an image from a 2D or 3D model by using computer programs.
It is also used to describe the process of calculating effects in a video editing program to produce final video output. We render or picture or model to convert it into high resolution photo-realistic image.