Hollywood Going Digital and 3D

teutonic_leech writes "Last weekend the Directors Guild of America hosted its annual Digital Day event, which gives filmmakers a look at revolutionary new movie-making gear. Judging from a Wired article reporting on the gathering, Hollywood's future not only seems to be digital - there are also indications that stereoscopic 3D has caught the attention of filmmakers in and outside tinseltown. One Indie filmmaker even went so far as to build his own homebrew stereolens attachment enabling him to film in 3D."

Comments

I once saw a stereoscopic aerial photo

[ReformedExCon]

Once, when I was little, I saw a stereoscopic spy photograph at the Smithsonian. They had a viewing port through which two images would be superimposed on each other giving the resulting image a 3 dimensional quality.

I don't know how well they can bring that sort of 3 dimensionality to a film without requiring strange and uncomfortable glasses (remember Jaws 3D?). The closest I've seen is in plays where the actors and props are all in three dimensions (naturally).

But the improvement in 3 dimensional rendering in digital filmmaking has been absolutely outstanding in recent years. Just compare old movies like Tron and Dungeons and Dragons with their blocky and obviously computer-rendered scenes to today's Toy Story 2, Incredibles, even Star Wars. The difference is night and day.

I hope that digital film making becomes more than just special effects, though. The medium allows for such a broad range of uses that it is virtually limitless. Take the anime film Grave of the Fireflies as an example of pushing a medium to its limits. Who could have thought a cartoon could have such an emotional impact? Now figure that whatever was done there is only scratching the surface in what can be done with digital films and a whole universe of possibilities opens up.

Head tilt & viewing comfort

[G4from128k]

The core challenge for 3-D is creating a system that works when a person tilts their head. Current 3-D filming and multi-person viewing systems assume that the viewers left eye is a fixed horizontal distance to the left of the right eye with no vertical displacement between the eyes' pupils. This assumption is only true when everyone is sitting upright in their chairs. If the viewer tilts their head, then the parallax of the scene appears unnaturally displaced and gives the viewer eyestrain, headache, or a sensation of double-images. With 3-D, you can't rest your head on your partner's shoulder, tilt your head to see around the person in front of your, or lie on the couch and watch it without some visual discomfort. I'd imagine that most people won't consciously notice the problem but might subconsciously become aware that they get eyestrain, neck-pains, headaches, or a vaguely nauseous disoriented feeling when they see a 3D movie -- not a recipe for repeat business.

One nearterm solution to the problem is constructing tilt-dependent parallax for each viewer. The person with their head tilted to the right needs to see a different pair of images than the person who is sitting up straight or who has tilted their head to the left. This pushes 3D into the realm of more awkward and more expensive personal viewing headsets and the need for tracking head tilt and recomputing/rerendering the scene parallax in realtime.

The longterm solution is holographic or volumetric systems that create/reconstruct an optical 3-D field. This solves the head tilt problem, although adds the minor cinematic problem that the people on the left side of the theatre may have an obstructed view (relative to the people in the center or right-side) if, for example, the main character's hand covers some important object from some angles.