Improved ACM Algorithm for Poyang Lake Monitoring

LENG Ying; LIU Zhongling; ZHANG Heng; WANG Yu; LI Ning

doi:10.11999/JEIT160870

Volume 39 Issue 5

May 2017

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LENG Ying, LIU Zhongling, ZHANG Heng, WANG Yu, LI Ning. Improved ACM Algorithm for Poyang Lake Monitoring[J]. Journal of Electronics & Information Technology, 2017, 39(5): 1064-1070. doi: 10.11999/JEIT160870

Citation:

LENG Ying, LIU Zhongling, ZHANG Heng, WANG Yu, LI Ning. Improved ACM Algorithm for Poyang Lake Monitoring[J]. Journal of Electronics & Information Technology, 2017, 39(5): 1064-1070. doi: 10.11999/JEIT160870

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Improved ACM Algorithm for Poyang Lake Monitoring

doi: 10.11999/JEIT160870

1.
2.
(Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China)

Funds:

The National Natural Science Fund of China for Excellent Young Scholars (61422113)

Received Date: 2016-08-24
Rev Recd Date: 2017-01-20
Publish Date: 2017-05-19

Abstract

Abstract

Sentinel-1 satellite constellation offers enough Synthetic Aperture Radar (SAR) images for long-term water monitoring, due to its relative large swath, great revisit frequency and high resolution. The middle and upper Yangtze River suffers serious flood disaster in 2016. It is significant to detect water and its changes of Poyang Lake, since it is one of the important flood storage lakes along the Yangtze River mainstream. However, the traditional segmentation algorithm has shortage in edge preservation and the accuracy of water detection, especially in the case of Poyang Lake, which is widely distributed and has more complex background, weak edges and blurred edges. A new Active Contour Model (ACM) algorithm based on local narrowband is proposed to solve these problems, and it is applied to Sentinel-1A observations related to Poyang Lake. First, a cascade two-level Otsu approach is adopted to obtain the initial contour. Second, the local narrowband is built along the initial contour to reduce the calculating time. Finally, a region-based ACM is introduced into the local narrowband to stop the contours at weak or blurred edges. Experiment results show that the new method has advantages in the edge preservation and obtains better segmentation results with respect to other methods.
- Synthetic Aperture Radar (SAR),
- Poyang lake,
- Local narrowband,
- Water detection

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References(19)

References

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