1. A digital camera comprising: a plurality of arrays of photo detectors disposed upon a substrate, wherein the plurality of arrays of photo detectors includes a first array of photo detectors configured to sample light of a visible spectrum; and a second array of photo detectors configured to sample infrared (IR) radiation; and a processor operatively coupled to the plurality of arrays of photo detectors, wherein the processor includes a first channel processor configured to receive first output data of the first array of photo detectors; a second channel processor configured to receive second output data of the second array of photo detectors; and an image pipeline configured to generate a composite image based at least in part on the first output data and the second output data.