The number of skyscrapers over 600 metres high – known as "megatalls" – is set to more than double in the next few years, say experts.

据有关专家预测，在未来几年中，超过600米的超高层建筑的数量将会成倍增加。

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While making concrete slabs double as displays may prove useful when dressing up those otherwise drab skyscrapers, creating 3D-like images from real objects throws in a much-needed dash of geekiness.

ENGADGET: NICT and Kobe University team up to form "floating visual" 3D display