  We present a compact, diffuser-assisted, single-pixel computational camera. A
rotating ground glass diffuser is adopted, in preference to a commonly used
digital micro-mirror device (DMD), to encode a two-dimensional (2D) image into
single-pixel signals. We retrieve images with an 8.8% sampling ratio after the
calibration of the pseudo-random pattern of the diffuser under incoherent
illumination. Furthermore, we demonstrate hyperspectral imaging with line array
detection by adding a diffraction grating. The implementation results in a
cost-effective single-pixel camera for high-dimensional imaging, with potential
for imaging in non-visible wavebands.
