BOMS (Beach Optical Monitoring System)


BOMS (Beach Optical Monitoring System) is an autonomous beach imaging system that can monitor high frequency beach (and shoreline) changes. Through this system, optical information is acquired through sets of synchronised digital video cameras suitably located, calibrated and geo-referenced, processed through custom-made algorithms.

The system is deployed at the pilot experimental sites of Gerakas and Katerini, obtaining beach imagery at hourly 15 min bursts during daylight. These images are processed to provide time lapse images (TIMEX) and variance images (SIGMA) . The TIMEX and SIGMA images provide (hourly) information on the position of the coastline and the nearshore morphological features, whereas processing of the time-stack images generate time series of swash excursions, and wave run-up statistics and spectra. The optical information is also used to assess nearshore bathymetry changes using a wave propagation model and the dispersion relation. The system’s morphological observations are calibrated against data obtained by RTK-DGPS topographical surveys and 3-D laser scanner observations.

General flowchart of the BOMS components:



post_control point calibration post_corections
Control points calibration image cleaning
mosaic3d-sigmarun_2014_07_18_07_00_00 Post_coastclean_globalsigma
3d mosaic creation focusing

Exported image types:

timex sigma real-time
 Timex image Sigma image Real-time image