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In this category you will find render ready 3D models.
Rendering or image synthesis is the automatic process of generating a photorealistic or non-photorealistic image from a 2D or 3D model (or models in what collectively could be called a scene file) by means of computer programs.
The model here is a representation of any objects or phenomena in a strictly defined language or in the form of a data structure. Such a description may contain geometric data, the position of the observer’s point of view, information about the illumination, the degree of the presence of some substance, the intensity of the physical field,
Often in computer graphics (artistic and technical) rendering (3D rendering) means – creating a flat image – digital bitmap image – on the developed 3D-scene. Synonym in this context is visualization.
Visualization is one of the most important sections in computer graphics, and in practice it is closely related to the others. Usually, 3D modeling and animation software packages are also includes a rendering function. There are separate software products that perform rendering.
Depending on the purpose, pre-rendering is distinguished as a rather slow visualization process, which is mainly used in video creation, and real-time rendering, for example, in video games.
A computer program that produces a rendering is called a render or renderer.
Nowadays many visualization algorithms have been developed. Existing software can use several algorithms to obtain the final image.
The tracing of each ray of light in a scene is impractical and takes an unacceptably long time. Even tracing a small number of rays, sufficient to get an image, takes an extremely long time, if sampling is applied.
Because of this, four groups of methods were developed, they are more effective than simulation of all the light rays in the scene: