This document discusses single-pixel imaging via compressive sampling. It introduces compressive sampling which allows recovering a signal even if it is under-sampled by exploiting sparsity and incoherence. A single-pixel camera architecture is presented that uses a photo detector and modulated light sources to sample an image in a compressive manner, allowing reconstruction of the full image from far fewer samples than required by traditional pixel arrays. This technique could enable higher quality cameras at lower costs by needing just one photo detector instead of many.