SAR图像海岸线检测的区域距离正则化几何主动轮廓模型

doi:10.11947/j.AGCS.2016.20160039

测绘学报 ›› 2016, Vol. 45 ›› Issue (9): 1096-1103.doi: 10.11947/j.AGCS.2016.20160039

SAR图像海岸线检测的区域距离正则化几何主动轮廓模型

姜大伟^1,2, 范剑超², 黄凤荣¹

1. 辽宁师范大学城市与环境学院, 辽宁大连 116029;
2. 国家海洋环境监测中心海域资源环境动态监管中心, 辽宁大连 116023

收稿日期:2016-02-24 修回日期:2016-06-16 出版日期:2016-09-20 发布日期:2016-09-29
通讯作者: 范剑超 E-mail:jcfan@nmemc.org.cn
作者简介:姜大伟(1991-),男,硕士生,研究方向为海洋遥感SAR图像处理、海域使用动态监测.E-mail:18840817436@163.com
基金资助:
国家自然科学基金（61273307）；中国博士后面上基金（2014M551082）；高分辨率对地观测系统重大专项（41-Y30B12-9001-14/16）

SAR Image Coastline Detection Based on Regional Distance Regularized Geometric Active Contour Models

JIANG Dawei^1,2, FAN Jianchao², HUANG Fengrong¹

1. School of Urban Environment, Liaoning Normal University, Dalian 116029, China;
2. Marine Resources and Environment Monitoring Center, National Marine Environmental Monitoring Center, Dalian 116023, China

Received:2016-02-24 Revised:2016-06-16 Online:2016-09-20 Published:2016-09-29
Supported by:
The National Natural Science Foundation of China (No.61273307);The China Postdoctoral Science Foundation (No.2014M551082);High Resolution Special Research (No.41-Y30B12-9001-14/16).

摘要/Abstract

摘要： 合成孔径雷达（SAR）卫星遥感图像可以极大地提高全国海岸线覆盖频率，然而受到海洋波浪所引起的随机海水表面粗糙度的影响，海岸目标与海水背景边界易混淆不清，因此本文提出了基于区域距离正则化几何主动轮廓模型（RDRGAC），引入距离正则项，解决重复初始化水平集函数为符号距离函数的问题，提高了算法收敛速度。此外，将区域面积项系数与SAR图像等效视数（ENL）建立非线性拟合关系，实现RDRGAC模型根据不同SAR遥感图像的自适应调整，改善海岸线自动提取精度。通过河北省北戴河和大连市金州湾SAR数据海岸线提取对比试验，验证了所提方法的有效性。

关键词: 相干斑噪声, 合成孔径雷达, 非线性拟合, 几何主动轮廓模型, 等效视数

Abstract: Synthetic aperture radar (SAR) satellite remote sensing images can greatly increase the frequency of the coastline coverage all over the country. However, due to the influence of the random sea surface roughness caused by waves, it's a challenge to distinguish the coastline and sea boundary. To solve this problem, this paper proposes regional distance regularized geometric active contour models (RDRGAC), in which the distance regularized term is introduced to avoid periodically initializing the degraded function with a signed distance function, accelerating the speed of convergence. Besides, it establishes the nonlinear regression relationship between the regional term parameters and equivalent number of looks (ENL) in SAR images, leading to the adaptive setting of RDRGAC model with different SAR images, which could improve the accuracy of coastline automatic detection in return. In the experiments, SAR images in Beidaihe and Dalian Jinzhou Bay respectively are adopted to detect the coastline, verifying the effective of the proposed method.

Key words: speckle noise, synthetic aperture radar, nonlinear regression relationship, geometric active contour model, equivalent number of looks

中图分类号:

P237

姜大伟, 范剑超, 黄凤荣. SAR图像海岸线检测的区域距离正则化几何主动轮廓模型[J]. 测绘学报, 2016, 45(9): 1096-1103.

JIANG Dawei, FAN Jianchao, HUANG Fengrong. SAR Image Coastline Detection Based on Regional Distance Regularized Geometric Active Contour Models[J]. Acta Geodaetica et Cartographica Sinica, 2016, 45(9): 1096-1103.

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SAR图像海岸线检测的区域距离正则化几何主动轮廓模型

SAR Image Coastline Detection Based on Regional Distance Regularized Geometric Active Contour Models

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