Texture mapping is a method, invented by Ed Catmull, of adding detail, surface texture, or colour to a computer-generated graphic or 3D model. A texture map is applied (mapped) to the surface of a shape. This process is akin to applying gift wrapping paper to a plain white box.
Multitexturing is the use of more than one texture at a time on a shape. This has various uses, sometimes as a way of applying a light map to a surface, which is faster than requiring the graphics hardware to do lighting calculation for that surface on the fly, or more recently bump mapping has become popular, which allows a texture to directly control the lighting calculations, allowing the surface to not only have detailed colouring, but detailed contours as well.
Stock photography consists of existing photographs that can be licensed for specific uses. Book publishers, specialty publishers, magazines, advertising agencies, filmmakers,
web designers, graphic artists, interior decor firms, corporate creative groups, and other entities utilize stock photography to fulfill the needs of their creative assignments. By using stock photography instead of hiring a photographer to perform on location shooting, customers can save valuable time and stay on budget. With a wealth of images, stock photography databases that may be searched online save photo researchers valuable time when they are looking for just the right image. With today's digital delivery methods, images may be purchased online and delivered via email or downloaded right away.