  Time-of-flight three dimensional imaging is an important tool for many
applications, such as object recognition and remote sensing. Unlike
conventional imaging approach using pixelated detector array, single-pixel
imaging based on projected patterns, such as Hadamard patterns, utilises an
alternative strategy to acquire information with sampling basis. Here we show a
modified single-pixel camera using a pulsed illumination source and a
high-speed photodiode, capable of reconstructing 128x128 pixel resolution 3D
scenes to an accuracy of ~3 mm at a range of ~5 m. Furthermore, we demonstrate
continuous real-time 3D video with a frame-rate up to 12 Hz. The simplicity of
the system hardware could enable low-cost 3D imaging devices for precision
ranging at wavelengths beyond the visible spectrum.
