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This article is a summary of chapter 11 of the Manual Sediment Transport Measurements in Rivers, Estuaries and Coastal Seas[1]. This summary provides a short introduction of the Argus video monitoring system.

Introduction of Argus video

Using digital imaging technology, shore-based video systems now provide the additional capability of automated data collection, encompassing a much greater range of time and spatial scales than were previously possible.

An ARGUS monitoring system typically consists of four to five video cameras, spanning a 180º view, and allowing full coverage of about four to six kilometres of beach. The cameras are mounted on a high location along the coast and connected to an ordinary PC on site, which in turn communicates to the outside world using conventional techniques such as analogue modems, ISDN, DSL, or a wireless LAN (see also video technology and underwater video systems). Data sampling is usually hourly (although any schedule can be specified) and continues during rough weather conditions. As the process of data collection is fully automated, the marginal operating costs are virtually zero.

Each standard hourly collection usually consists of three types of images:

  1. snapshot images,
  2. time exposure images averaging out natural modulations in wave breaking to reveal a smooth pattern of bright image intensities, which are an excellent proxy for the underlying, submerged sand bar topography and
  3. variance images helping to identify regions which are changing in time (like the sea surface).

For more information on images, see also Argus image types and conventions and Argus standard image processing.

See also

Summaries of the manual

Other internal links

External links

References

  1. Rijn, L. C. van (1986). Manual sediment transport measurements. Delft, The Netherlands: Delft Hydraulics Laboratory
The main author of this article is Rijn, Leo van
Please note that others may also have edited the contents of this article.


The main author of this article is Roberti, Hans
Please note that others may also have edited the contents of this article.