Resolume Forum

Hello,

We are planning to make a audiovisual-show in 'surround'. This means people are standing/sitting in a huge cilindrical environment (10 meter in diameter). We have several ideas for realising this idea, the visual part at least. We are thinking of using a couple of beamers (5+) and placing them in a circular way. The question now is, how many beamers do you need to achieve a semi-realistic experience, considering the diameter, projection-angle and number of beamers. Any idea would be welcome, go as much off-topic as you like.

Kap

For the number of beamers you simply need to calculate:
that pi thing..: u=pi*d -> 10m*pi= 31,42m
And for example 3m height of the Screen and 4:3 beams:
Height of one Projection 3m, Ratio 4:3 Width 4m
31,42m / 4m = 7,85m...Go on and cut one beamer with a saw
So youre gonna use 8 Beams in the middle of the Circle.
They shoul be equipped with a Reforming Function (Many of the better NEC Beams have something like this called 3D Reform) to compensate the Picture Distortion. Be careful because a litttle piece of the Picture gets lost.
or you use a software solution like Wings Platinum where you have that reforming and softedging for seamless Projection.

For a "Semi"-Panoramic Projection simply mirror every second Beam (Switch from Front to Rearprojection) With only one Video Signal youll get a Kalaidoscopic Effect at the edges. But you ll always see them.

Greets Maze