Characters which have been designed to be used in a commercial application are found throughout the modern world, on advertisement billboards, murals, graphic marketing within interior spaces and within recent years, as animations on the Internet. A character can appear in two dimension (2D) or as a three-dimensional design (3D) as modelled using a computer or traditionally sculpted. Commercial entities use characters which are designed to embody a brand image or enhance a sales campaign.
3D models are widely used anywhere in 3D graphics and CAD. Actually, their use predates the widespread use of 3D graphics on personal computers. Many computer games used pre-rendered images of 3D models as sprites before computers could render them in real-time. Today, 3D models are used in a wide variety of fields. The medical industry uses detailed models of organs; these may be created with multiple 2-D image slices from an MRI or CT scan. The movie industry uses them as characters and objects for
animated and real-life motion pictures. The video game industry uses them as assets for computer and video games. The science sector uses them as highly detailed models of chemical compounds. The architecture industry uses them to demonstrate proposed buildings and landscapes or physical architectural models.
3D scenes are 3D views or landscapes to describe the natural environment and give a photorealistical view. Scene graphs are useful for modern games using 3D graphics and increasingly large worlds or levels. In such applications, nodes in a scene graph (generally) represent entities or objects in the scene. The result of 3D landscape is convincing and realistic photo effect is obtained by controlling the light and the reflections correctly. In any case, a good textures to achieve a nice result.
