Semi-automatic system for land cover change detection using Bi-temporal remote sensing images

Zhi Yong Lv, Wen Zhong Shi, Xiao Cheng Zhou, Jón Atli Benediktsson

Research output: Journal article publicationJournal articleAcademic researchpeer-review

21 Citations (Scopus)

Abstract

Change detection is an increasingly important research topic in remote sensing application. Previous studies achieved land cover change detection (LCCD) using bi-temporal remote sensing images. However, many widely used methods detected change depending on a series of parameters, and determining parameters is time-consuming. Furthermore, numerous methods are data-dependent. Therefore, their degree of automation should be improved significantly. Three techniques, which consist of a semi-automatic change detection system, are proposed for LCCD to overcome the abovementioned drawbacks. The three techniques are as follows: (1) change magnitude image (CMI) noise reduction is based on Gaussian filter (GF), which is coupled with OTSU for reducing CMI noise automatically using an iterative optimization strategy; (2) a method based on histogram curve fitting is suggested to predict the threshold range for parameter determination; and (3) a modified region growing algorithm is built for iteratively constructing the final change detection map. The detection accuracies of the proposed system are investigated through four experiments with different bi-temporal image scenes. Compared with several widely used change detection methods, the proposed system can be applied to detect land cover change with high accuracy and flexibility. This work is an attempt to provide a change detection system that is compatible with remote sensing images with high and median-low spatial resolution.

Original languageEnglish
Article number1112
JournalRemote Sensing
Volume9
Issue number11
DOIs
Publication statusPublished - 1 Nov 2017

Keywords

  • Land cover change detection
  • Remote sensing images
  • Semi-automatic change detection system

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)

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