Change detection of gravel mining on riverbeds from the multi-temporal and high-spatial-resolution formosat-2 imagery

Cheng Chien Liu, Chjeng Lun Shieh, Chiao An Wu, Ming Lin Shieh

研究成果: Article同行評審

15 引文 斯高帕斯(Scopus)

摘要

Gravel mining from river channels is conducted in many countries around the world, yet ground-based monitoring of these activities requires considerable manpower and is not very effective. Therefore, innovative and effective approaches to monitoring gravel mining are urgently required. Deployed as a high spatial resolution sensor in a daily revisit orbit, Formosat-2 has proved to be an ideal satellite for site surveillance. Using one known event of gravel mining in the Tseng-Wen River, Taiwan, between March 2004 and March 2005, we analysed nine Formosat-2 images taken during this period to summarize three characteristics of gravel mining in the images. Based on these characteristics, a standard procedure for processing Formosat-2 imagery to detect gravel mining is proposed. This procedure is validated against ground truthing collected by an unmanned helicopter flying at low altitude. The evolution of this gravel-mining event in the Tseng-Wen River is described by processing all historical Formosat-2 imagery using the proposed procedure. This standard procedure has been successfully incorporated into the Formosat-2 automatic image processing system and has been used to monitor gravel mining on a daily-basis.

原文English
頁(從 - 到)1136-1152
頁數17
期刊River Research and Applications
25
發行號9
DOIs
出版狀態Published - 2009 十一月 1

All Science Journal Classification (ASJC) codes

  • 環境化學
  • 水科學與技術
  • 環境科學 (全部)

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