by Jeff Hecht @ New Scientist
A single-pixel camera that captures complete images by taking many snaps with an array of micro-mirrors could consume less power and produce more compact image files than conventional imaging devices, researchers say.
A conventional digital camera focuses light onto a rectangular array of sensing elements, called pixels, which measure light.
The single-pixel camera developed by researchers Richard Baraniuk and Kevin Kelly at Rice University in Houston, Texas, US, takes a completely different approach. It reflects light from 1024 x 768 micro-mirrors onto a single photodiode. Then it changes the arrangement of micro-mirrors and repeats the process – all in a split second.