基于Canny算子的南通江海岸线研究

doi:10.13474/j.cnki.11-2246.2019.0323

测绘通报 ›› 2019, Vol. 0 ›› Issue (10): 83-88.doi: 10.13474/j.cnki.11-2246.2019.0323

基于Canny算子的南通江海岸线研究

蒋科迪¹, 殷勇¹, 范开桂², 张凌¹

1. 南京大学地理与海洋科学学院海岸与海岛开发教育部重点实验室, 江苏南京 210046;
2. 河海大学海洋学院, 江苏南京 210098

收稿日期:2018-12-17 出版日期:2019-10-25 发布日期:2019-10-26
通讯作者: 殷勇。E-mail:yinyong@nju.edu.cn E-mail:yinyong@nju.edu.cn
作者简介:蒋科迪(1996-),男,硕士生,从事海岸海洋科学研究工作。E-mail:3024725176@qq.com
基金资助:
国家自然科学基金（40776023）

Study on Nantong coastlines based on Canny operator

JIANG Kedi¹, YIN Yong¹, FAN Kaigui², ZHANG Ling¹

1. The Key Laboratory of Coast and Island Development of Ministry of Education, School of Geography and Ocean Science, Nanjing University, Nanjing 210046, China;
2. College of Oceanography, Hohai University, Nanjing 210098, China

Received:2018-12-17 Online:2019-10-25 Published:2019-10-26

摘要/Abstract

摘要： 基于RS、GIS、Matlab等技术与平台提取遥感影像岸线是当前实现海岸动态监测和分析各类型海岸动力地貌演化的重要技术方法。本文选取江苏南通江海岸带为研究区，对多期预处理后的MSS、TM和OLI影像进行卷积滤波、图像分割等处理；然后使用Matlab，基于Canny算子检测图像边缘，提取了多期影像的瞬时水边线。与此同时，结合不同类型海岸目视解译标志和吕四港近5 a潮汐数据矫正提取瞬时水边线，最后提取南通市4期江海岸线并分析了近45 a来南通江海岸线演变特性。

关键词: 遥感岸线提取, 瞬时水边线, Canny算子, 蚀淤变化

Abstract: Based on RS, GIS, Matlab and other platforms, the extraction of shoreline from remote sensing images is an important technical method to realize dynamic monitoring and analysis of various types of coastal dynamic geomorphological evolution. In this study, the coastal zone of Nantong, Jiangsu province is selected as the research area. Based on RS platform, the images of MSS, TM and OLI after multi-stage preprocessing are processed by convolution filtering and image segmentation. Then, using Canny operator to detect the image edge and extract the instantaneous water line of these multi-stage images. At the same time, the instantaneous water boundary is extracted combining with different types of coastal visual interpretation signs and tidal data correction over the past five years in Lvsi Port. Based on GIS platform, this study finally extracts four times coastlines and analyses the erosion and deposit evolution of them in recent 45 years in Nantong.

Key words: remote sensing coastline extraction, instantaneous waterline, Canny operator, erosion and deposit evolution

中图分类号:

P237
P229

蒋科迪, 殷勇, 范开桂, 张凌. 基于Canny算子的南通江海岸线研究[J]. 测绘通报, 2019, 0(10): 83-88.

JIANG Kedi, YIN Yong, FAN Kaigui, ZHANG Ling. Study on Nantong coastlines based on Canny operator[J]. 测绘通报, 2019, 0(10): 83-88.

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基于Canny算子的南通江海岸线研究

Study on Nantong coastlines based on Canny operator

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