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Viewing
the actor within the virtual scene Before filming the actor, all the scenery had to be built in the 3D software and rendered out as a still picture.
These images were then used as 'digital' backdrops, so that whilst filming we could view the actor in his correct position within the scene. This was done by videoing the actor with a blue background and combining him via a vision mixer with the computer image. All areas of blue within the frame become transparent when viewed on a video monitor.
Note: this method was only used for viewing the actor on the day of filming. He was still recorded onto tape with the blue background and was integrated into the scenes accurately at a later stage (see Combing the Actor into the Scene).
Filming
for wide screen cinema One method was to video the actor against the 16:9 central section of the virtual backdrop.
The problem with this method was that the actor was filmed at a reduced size, and so would have to be scaled up at a later stage. This is not very good for keeping the quality of the video image.
Therefore to get the largest possible image of the actor, we used a 4:3 cropped section of the 16:9 backdrop to video the actor against.
In most cases, this approach worked well since the actor in our film was usually stationary. But in the few cases when for example he walks across the complete scene, we had to resort to the first method. [ back ] Introduction | Film Imagery | Film Links | Film Credits | Film Awards A
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Production
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