Digital holographic sensor network and image analyses for distributed potable water monitoring

Water-related diseases affect societies in all parts of the world. On-line sensors are considered as a solution to the problems of low sampling density and time-consuming culturing methods associated with laboratory testing for microbiological content in potable water. Digital holographic microscopy (DHM) has been shown to be well suited to image microscopic objects, especially in laboratory environments, and has the potential to rival state-of-the-art techniques such as advanced turbidity measurement. In this paper, we provide a solution that permits DHM to be applied to a whole class of on-line remote sensor networks, of which potable water analysis is one example