Inspec keywords: geophysical image processing; rivers; cameras; embedded systems; level measurement; light reflection

Other keywords: camera; light reflection; binary image histogram; river; image-based water-level measurement system; embedded system

Subjects: Optical, image and video signal processing; Geophysics computing; Spatial variables measurement; Instrumentation and techniques for geophysical, hydrospheric and lower atmosphere research; Rivers, runoff, and streamflow; Computer vision and image processing techniques; Oceanographic and hydrological techniques and equipment; Level, flow and volume measurement