Abstract
In order to extract accurately wetland information of Tianjin Binhai New Area from electronic sensing images, the paper summarized and analyzed several water extraction methods, including Gray-level Threshold Method, Spectrum-photometric Method, Band Ratio Method and Modified Normalized Difference Water Index (MNDWI). Water information of the TM data was extracted using ENVI software by these methods, respectively. Finally, the above-mentioned results were analyzed and compared. The results show that Gray-level Threshold Method is the easiest and the least accurate, it is not appropriate for the extraction work of small water bodies. Spectrum-photometric Method is more accurate and gets clear water boundary. MNDWI is the most accurate, suitable for all kinds of water, but the boundary definition is not as good as the formers. Therefore, no one is accurate completely, but if we combine the method reasonably according to the characteristics of data, we can achieve better results.
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© 2013 Springer-Verlag Berlin Heidelberg
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Li, X., Liu, X., Liu, L., Xue, K. (2013). Comparative Study of Water-Body Information Extraction Methods Based on Electronic Sensing Image. In: Jin, D., Lin, S. (eds) Advances in Mechanical and Electronic Engineering. Lecture Notes in Electrical Engineering, vol 178. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-31528-2_52
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DOI: https://doi.org/10.1007/978-3-642-31528-2_52
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-31527-5
Online ISBN: 978-3-642-31528-2
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