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Projection Mapping advice
Hi all,
I’m working on a building projection mapping project and I’m looking for some advice. I have experience with flat surfaces, but this particular building is a castle which has some curved parts. I would usually just take a photo from the projectors perspective and then use that as the template, but I’m worried that any content projected onto the curved parts will look distorted. Has anyone got any advice on how to work on the curved areas? Should I just work as normal and let the projectors do the warping work? I use After Effects for all animating work and a bit of Cinema4D for 3D stuff.
This is the building in question:
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3 Replies
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If you just do a photo map the curve will be distorted. You really need a 3d model of the building if you’re going to be 100% accurate. For this you hire someone with a lidar scanner and they can generate a .obj file for you to use in C4D or AE, with a 3d plugin. This can be quite costly.
The alternative is to have someone use a 3d disto which will give you a rougher model that will need some massaging but will be adequate to make sure that your content doesn’t get all twisted up in projection.
For a project like this we’d use our disguise media servers. https://www.disguise.one
We load the same model into our system and by colocating reference points on the model and the building it does the projector calibration for you.info at icenineproductions dot com if you need help with the project.
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Do you have any 3D skills? You could model that pretty easily in Cinema4D or another 3D software, then texture your image/video onto the model. Then you just project that model onto the castle.
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I meant to reply to this thread. It all worked out fine in the end. I just used the photo reference and adjusted the angle of all the elements to make sure the perspective was correct. We used one our 30K projectors and Christie Twist to make sure the image was lined up correctly. We did a full test the week before so I was able to adjust anything that didn’t look quite right.
Thanks for the help though, I hadn’t heard of lidar scanners so I will do a lot more research on that.
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