scholarly journals A Novel Method for Waterline Extraction from Remote Sensing Image Based on Quad-Tree and Multiple Active Contour Model

2017 ◽  
Author(s):  
Zhang Baoming ◽  
Guo Haitao ◽  
Lu Jun ◽  
Yu Jintao
Keyword(s):  
Remote Sensing ◽  
Active Contour ◽  
Active Contour Model ◽  
Remote Sensing Image ◽  
Quad Tree ◽  
Contour Model ◽  
Novel Method

scholarly journals Shoreline Extraction in SAR Image Based on Advanced Geometric Active Contour Model

2021 ◽  
Vol 13 (4) ◽  
pp. 642
Author(s):  
Xueyun Wei ◽  
Wei Zheng ◽  
Caiping Xi ◽  
Shang Shang
Keyword(s):  
Remote Sensing ◽  
Active Contour ◽  
Active Contour Model ◽  
Convergence Condition ◽  
Detection Methods ◽  
Visual Interpretation ◽  
Sar Images ◽  
Contour Model ◽  
Geometric Active Contour ◽  
Sea Area

Rapid and accurate extraction of shoreline is of great significance for the use and management of sea area. Remote sensing has a strong ability to obtain data and has obvious advantages in shoreline survey. Compared with visible-light remote sensing, synthetic aperture radar (SAR) has the characteristics of all-weather and all-day working. It has been well-applied in shoreline extraction. However, due to the influence of natural conditions there is a problem of weak boundary in extracting shoreline from SAR images. In addition, the complex micro topography near the shoreline makes it difficult for traditional visual interpretation and image edge detection methods based on edge information to obtain a continuous and complete shoreline in SAR images. In order to solve these problems, this paper proposes a method to detect the land–sea boundary based on a geometric active contour model. In this method, a new symbolic pressure function is used to improve the geometric active-contour model, and the global regional smooth information is used as the convergence condition of curve evolution. Then, the influence of different initial contours on the number and time of iterations is studied. The experimental results show that this method has the advantages of fewer iteration times, good stability and high accuracy.

scholarly journals Active Contour Model with Adaptive weighted function for Robust Image Segmentation under Biased Conditions

2021 ◽  
pp. 114811
Author(s):  
Aditi Joshi ◽  
Mohammed Saquib Khan ◽  
Asim Niaz ◽  
Farhan Akram ◽  
Hyun Chul Song ◽  
...  
Keyword(s):  
Image Segmentation ◽  
Active Contour ◽  
Active Contour Model ◽  
Weighted Function ◽  
Contour Model ◽  
Robust Image
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