The technique of creating a photorealistic or non-photorealistic image from a 2D or 3D model using a computer programme is known as rendering or image synthesis. The render is the name given to the final image. The scene file contains geometry, viewpoint, texture, lighting, and shading information describing the virtual scene.. The scene file includes details on the virtual scene's geometry, viewpoint, texture, lighting, and shading. After that, a rendering programme processes the data in the scene file and outputs the results as a digital image or raster graphics image file. The process of computing effects in a video editing programme to create the final video output is referred to as "Rendering" in this context.
Rendering is used in a variety of contexts, including architecture, video games, simulators, movie and TV visual effects. Each of these uses strikes a unique balance between features and methods. There are many different renderers that can be used. Some are stand-alone, some are free open-source projects, and some are integrated into more comprehensive modelling and animation systems. A renderer is an intricately designed programme that draws from many fields, including light physics, visual perception, mathematics, and software development.
There are several distinguishable features that can be used to understand a rendered image. Finding effective ways to simulate them has been a major driving force behind rendering research and developement. Others are created collectively, while some are directly related to specific algorithms and procedures.