An object-based image analysis in QGIS for image classification and assessment of coastal spatial planning
Article
Article Title | An object-based image analysis in QGIS for image classification and assessment of coastal spatial planning |
---|---|
Article Category | Article |
Authors | Zaki, Abdurrahman, Buchori, Imam, Sejati, Anang Wahyu and Liu, Yan |
Journal Title | Egyptian Journal of Remote Sensing and Space Sciences |
Journal Citation | 25 (2), pp. 349-359 |
Number of Pages | 11 |
Year | Aug 2022 |
Place of Publication | Egypt |
ISSN | 1110-9823 |
2090-2476 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.ejrs.2022.03.002 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S111098232200031X |
Abstract | In practice, urban and regional planners often use a pixel-based method for image classification. Unfortunately, it produces lower accuracy than an Object-Based Image Analysis (OBIA) method, especially for the high-resolution images. To assess spatial planning, scholars rarely used the OBIA method in open-source software. This paper aims to develop a method for classifying land cover and assessing coastal spatial planning. We used Sentinel-2A in 2015 and 2020 as the basic data. For image classification, we used the OBIA method in Quantum GIS (QGIS) 3.10.6 and Orfeo ToolBox 7.1.0. Furthermore, we used Artificial Neural Network (ANN) and Cellular Automata (CA) algorithms in QGIS 2.18.20 for projecting future land cover change, and then used the projected land cover map to assess the spatial planning in 2031. The results show that the OBIA method is useful for image classification, achieving 94.50 and 90.98 percent of the overall accuracy for the imageries in 2015 and 2020, respectively. Our coastal spatial planning assessment shows that the plan has not considered adequately the rapid land cover change of the region, especially the increase in waterbodies. We advocate that the local government should consider this issue when evaluating the spatial planning. The methodology using an open-source software such as QGIS in a developing country context also provides a promising exemplar that other local governments can use for assessing their spatial planning. |
Keywords | QGIS; OBIA; Image classification; Coastal areas; Spatial planning; Assessment methodology |
Byline Affiliations | Diponegoro University, Indonesia |
University of Queensland | |
Library Services |
https://research.usq.edu.au/item/w8w7x/an-object-based-image-analysis-in-qgis-for-image-classification-and-assessment-of-coastal-spatial-planning
Download files
Published Version
An object-based image analysis in QGIS.pdf | ||
License: CC BY 4.0 | ||
File access level: Anyone |
64
total views341
total downloads2
views this month5
downloads this month