We overview our recently published multi-dimensional integral imaging-based system for underwater optical signal detection. For robust signal detection, an optical signal propagating through the turbid water is encoded using multiple light sources and coded with spread spectrum techniques. An array of optical sensors captures video sequences of elemental images, which are reconstructed using multi-dimensional integral imaging followed by a 4D correlation to detect the transmitted signal. The area under the curve (AUC) and the number of detection errors were used as metrics to assess the performance of the system. The overviewed system successfully detects an optical signal under higher turbidity conditions than possible using conventional sensing and detection approaches.
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