Dawn of the Dead (2004 film)
Visual effects and title sequence
#### Visual effects and title sequence

[thumb\|The scene in which the mall's parking lot is packed with tens of thousands of zombies was achieved with motion\-control passes, and actor [Ving Rhames](/wiki/Ving_Rhames "Ving Rhames") being filmed over a cluster of 200 extras that were shot against [green screen](/wiki/Chroma_key "Chroma key") at various spots.](/wiki/File:Dawn_of_the_dead_parking_lot_zombies.gif "Dawn of the dead parking lot zombies.gif")
The [visual effects](/wiki/Visual_effect "Visual effect") for the film were provided by Canadian VFX studio Mr. X Inc., with its president Dennis Berardi serving as the film's co\-[VFX supervisor](/wiki/Visual_effects_supervisor "Visual effects supervisor").

The production shot scenes for which Snyder wanted as many as 4,000 live\-action zombies, which Berardi created rather as a combination of [practical](/wiki/Practical_effect "Practical effect") zombies and [CG](/wiki/Computer-generated_imagery "Computer-generated imagery") zombies which he built as 3D models with [Autodesk Maya](/wiki/Autodesk_Maya "Autodesk Maya"). One such scene involved tens of thousands of zombies at the mall's parking lot, which was shot with motion\-control passes whose [green screen](/wiki/Chroma_key "Chroma key") elements of 200 extras, combined with the CG zombies, were later [composited](/wiki/Digital_compositing "Digital compositing") to create a "digital crowd simulation that looks realistic".

[Kyle Cooper](/wiki/Kyle_Cooper "Kyle Cooper") designed the [title sequence](/wiki/Title_sequence "Title sequence") for the film, using real human blood.


What is meant by 'digital crowd simulation'?