Study on the extraction method of tidal flat

Yuanyuan Zhang; Zhiqiang Gao; Maosi Chen

doi:10.1117/12.2319559

18 September 2018 Study on the extraction method of tidal flat

Yuanyuan Zhang, Zhiqiang Gao, Maosi Chen

Proceedings Volume 10767, Remote Sensing and Modeling of Ecosystems for Sustainability XV; 107670M (2018) https://doi.org/10.1117/12.2319559
Event: SPIE Optical Engineering + Applications, 2018, San Diego, California, United States

Abstract

Tidal flats in Rudong county, located at the end of Jiandsu Radail Sand Ridges Area. Plentiful quantities of tidal flat makes this area an important land reserve resource. However, traditional field measurement technology encounters difficult due to special form of geomorphology in Rudong tidal flat, resulting the lack of data support in rational exploitation. In order to obtain the extent of tidal flat with volatile coastal evolution, we proposed a modified method, which based on the previous studies, to map tidal flat area with rare manual intervention. Firstly, a confident low tide image generated under the method of pixel-based NDWI average composite. Then, OSTU method was used to compute threshold, which used to segment image into two value. followed by tideline extraction. Subsequently, the extent of tidal flat in Rudong county was obtained. The study shows that the method can realize the extraction of the tidal flat extent in complex landform quickly and accurately. The research data can be obtained free of charge, which makes the method generalized.

Citation Download Citation

Yuanyuan Zhang, Zhiqiang Gao, and Maosi Chen "Study on the extraction method of tidal flat", Proc. SPIE 10767, Remote Sensing and Modeling of Ecosystems for Sustainability XV, 107670M (18 September 2018); https://doi.org/10.1117/12.2319559

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