頁籤選單縮合
題 名 | Using Spectral and Spatial Information for Oil Spill Detection in Multi-spectral Imagery=使用多光譜影像結合光譜及空間資訊偵測海洋油污 |
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作 者 | 高宏明; 曹伶伶; 李昭興; 任玄; | 書刊名 | 航測及遙測學刊 |
卷 期 | 13:4 2008.12[民97.12] |
頁 次 | 頁285-294 |
分類號 | 440.98 |
關鍵詞 | 溢油污染; 異常物偵測; RX演算法; 空間資訊特徵; Oil spill; Anomaly detection; RX detector; RXD; Spatial feature; |
語 文 | 英文(English) |
中文摘要 | 海洋溢油污染伴隨而來的是嚴重的生態浩劫災害。如何偵測、監測及追蹤油污的分佈,一直以來都是重要的課題。在廣闊的海洋裡要能監測油污的分佈使用遙測影像是最有效率的方法。但是海面上的油污通常只佔有遙測影像中很小的區域,如何使用遙測技術偵測油污的分佈將是一項挑戰。本研究主要的目地是發展一套能運用光學衛星影像來偵測油污的技術。由於油污在海上的分佈經常只佔較小的面積,所以油污的分佈可以看成是影像裡的異常物。在本研究裡運用了異常物偵測的演算法,將油污的份佈大致偵測出來。但是面對海面上的許多干擾,異常物演算法經常會有許多誤判。為了將油污分佈從其他的干擾中區分出來,我們將空間特徵資訊加入異常物偵測的計算。我們所提供的方法可利用海面上油污分佈特有的空間特徵及油污的光譜特性,將在海面上的油汙分佈精準的估計出來。 |
英文摘要 | Oil spill on the sea surface produced by human activities is disastrous to the ecological environment. How to detect, monitor and track the oil spill are always very important tasks. Due to oil spill often occur in open sea, remotely sensed image provides an effective technology to monitor the sea area. But the oil spill only occur in a very small are in the image, therefore, to detect the oil spill on the sea surface is a challenge problem. This study focuses on the detection of oil slick on sea surface using both spectral and spatial information of the remotely sensed images. Since the oil spill area usually only occupies a few pixels in the image scene, it can be considered as anomaly. By applying anomaly detection algorithm with only spectral information, the oil spill area can be extracted along with other marine phenomena as interference. In order to eliminate the interferences, spatial features are introduced. The experimental result shows the proposed method combining the spatial features of oil spill with spectral information improves the oil spill detection performance. |
本系統中英文摘要資訊取自各篇刊載內容。