Wiktionary
previsualization
n. (context film English) Any technique that attempts to visualize a scene before the filming begins.
Wikipedia
Previsualization
Previsualization (also known as previs, previz, pre-rendering, preview or wireframe windows) is a function to visualize complex scenes in a movie before filming. It is also a concept in still photography. Previsualization is applied to techniques such as storyboarding, either in the form of charcoal drawn sketches or in digital technology in the planning and conceptualization of movie scenery make up.