UTILIZATION OF MULTITEMPORAL LANDSAT DATA FOR COASTLINE CHANGE ANALYSIS USING CANNY EDGE DETECTOR

Jurnal Kelautan: Indonesian Journal of Marine Science and Technology Pub Date : 2021-08-31 DOI:10.21107/JK.V14I2.8924

Luhur Moekti Prayogo, Z. Hidayah

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引用次数: 1

Abstract

ABSTRACT The development of remote sensing technology has experienced significant progress. This progress is marked by the availability of images of various resolutions with complete channels, open-source, and their development in various image classification techniques such as edge detection techniques. This study aims to examine changes in the coastline in Banmaleng Village, Gili Raja Island, Sumenep Regency using the Canny edge detection algorithm on multitemporal Landsat 7 and 8 imagery in 2005 - 2020. The edging process includes (a) minimize noise by applying a Gaussian filter, (b) determine the image intensity gradient, (c) apply non-maximum emphasis to eliminate spurious responses to objects, (d) define multiple thresholds for determining potential image edges, (e) Track edge hysteresis by pressing all other weak edges that are not connected to firm edges. Canny edge detection produces sharp edges to analyze coast line changes quite well. Every five years, the coastline of Banmaleng Village experienced shifting from 0 , 4 to 2 , 3 meters in several areas. Keywords : Edge Detection, Landsat, Coastline, Canny Algorithm, Gili Raja

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基于canny边缘检测器的多时相陆地卫星数据海岸线变化分析

遥感技术的发展取得了重大进展。这一进步的标志是具有完整通道的各种分辨率图像的可用性，以及它们在各种图像分类技术(如边缘检测技术)中的发展。本研究旨在利用Canny边缘检测算法对2005 - 2020年多时相Landsat 7和8图像进行研究，研究Sumenep Regency Gili Raja岛Banmaleng村的海岸线变化。边缘处理包括(a)通过应用高斯滤波器最小化噪声，(b)确定图像强度梯度，(c)应用非最大强调来消除对对象的伪响应，(d)定义多个阈值来确定潜在的图像边缘，(e)通过按压所有其他未连接到坚固边缘的弱边缘来跟踪边缘滞后。精明的边缘检测产生锐利的边缘，可以很好地分析海岸线的变化。每隔五年，班麻楞村的海岸线就会在几个地方从0.4米移动到2.3米。关键词:边缘检测，陆地卫星，海岸线，Canny算法，Gili Raja

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Jurnal Kelautan: Indonesian Journal of Marine Science and Technology

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