2x3D lets viewers watch 2D or 3D movies on the same screen

“This system has several applications. One that’s easy to understand is multilingual viewing. For example, I’m giving this presentation in Japanese, but the pictures themselves could be in English. What’s important is that everyone looks at the same screen, and the information delivered is different for people who are wearing the glasses and people who aren’t.”


“Regarding the hardware, there are two ordinary projectors used concurrently, almost the same as a 3D set-up. If you project two pictures, usually, you see both pictures, like this. If you pass them through a filter, you can see one picture. As for the other picture, we want to make it like this. Firstly, to cancel the other picture, we superpose, say, a blue picture on the orange parts, to make them white. Then, we combine the canceled parts with the pictures we want to add, and ultimately, we achieve this kind of hidden picture. I said we simply use complementary colors, but it can’t be done that simply. That’s where the technology comes in.”

“Superposing pictures leads to lower contrast. The contrast is halved, and that’s the weak point here. But compared with the shutter method, the picture quality isn’t reduced, nor is the resolution. Regarding color, current cinema projectors support 12-bit, so progress is fast. You can use deep color, or quality can be improved, right away, by using more projectors. So, I think that’s a promising method.”

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