Estimating water surface area at different flows using high-resolution multispectral digital imagery

Christopher M.U. Neale, Craig Addley, Raghuveer Vinukollu, Deepak Lal, Daniel Zaccaria

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper describes an application using high-resolution imagery (0.3 meter pixels) to obtain water surface areas at different flow rates on a 3.2 Kilometer long controlled bypass reach of the Catawba River close to Great Falls, South Carolina. The multispectral images were acquired using the USU airborne multispectral digital system during a 5-day period in November of 2004. Each flight was conducted at a different flow rate, once the flow reached steady state after adjustment of the control gates. The imagery from each flight was processed forming rectified mosaics of the entire reach that were cut using an overlay polygon covering the extent of the river channel and immediate banks. The imagery was classified using supervised classification techniques in order to extract the water surface area from the rectified mosaic. The water area totals were plotted against the steady state flow rates obtaining a very good relationship with a coefficient of determination of over 99%. This project showed the usefulness and cost effectiveness of airborne digital imagery taken under difficult lighting and sun-angle conditions.

Original languageEnglish (US)
Title of host publicationAmerican Society for Photogrammetry and Remote Sensing - 20th Biennial Workshop on Aerial Photography, Videography, and High Resolution Digital Imagery for Resource Assessment 2005
Pages436-442
Number of pages7
StatePublished - 2006
Externally publishedYes
Event20th Biennial Workshop on Aerial Photography, Videography, and High Resolution Digital Imagery for Resource Assessment 2005 - Weslaco, TX, United States
Duration: Oct 4 2005Oct 5 2005

Publication series

NameAmerican Society for Photogrammetry and Remote Sensing - 20th Biennial Workshop on Aerial Photography, Videography, and High Resolution Digital Imagery for Resource Assessment 2005

Conference

Conference20th Biennial Workshop on Aerial Photography, Videography, and High Resolution Digital Imagery for Resource Assessment 2005
Country/TerritoryUnited States
CityWeslaco, TX
Period10/4/0510/5/05

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition
  • Information Systems

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