3d modelling (alt. spelling; 3d modeling) in computers is the process of taking data and representing it in a 3d format; Often this means using 3d modelling software and using it to create mathematical 3d representations in an intuitive manner. The term is equally valid for automated data collection that is then presented in a 3d form; For example, from stereography or 3d scanning. Has applications in the fields of entertainment, architecture, scientific analysis and product design.