  We develop novel compressive coded rotating mirror (CCRM) camera to capture
events at high frame rates in passive mode with a compact instrument design at
the fraction of the cost compared to other high-speed imaging cameras.
Operation of CCRM camera is based on the amplitude optical encoding (grey
scale) and a continuous frame sweep across a low-cost detector using a
motorized rotating mirror system which can achieve single pixel shift between
adjacent frames. Amplitude encoding and continuous frame overlapping enable the
CCRM camera to achieve high number of captured frames and high temporal
resolution without making sacrifices in the spatial resolution. Two sets of
dynamic scenes have been captured at up to 120 Kfps frame rate in both
monochrome and colored scales in the experimental demonstrations. The obtained
heavily compressed data from the experiment are reconstructed using the
optimization algorithm under the compressive sensing (CS) paradigm and the
highest sequence depth of 1400 captured frames in single exposure has been
achieved with the highest compression ratio of 368 compared to other CS-based
high-speed imaging technologies. Under similar conditions CCRM camera is
700$\times$ faster than conventional rotating mirror based imaging devices and
could reach frame rate of up to 20 Gfps.
