Supervised methods of image segmentation accuracy assessment in land cover mapping
Land cover mapping via image classification is sometimes realized through object-based image analysis. Objects are typically constructed by partitioning imagery into spatially contiguous groups of pixels through image segmentation and used as the basic spatial unit of analysis. As it is typically de...
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| Format: | Article |
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Elsevier
2018
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| Online Access: | https://eprints.nottingham.ac.uk/48969/ |
| _version_ | 1848797891143925760 |
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| author | Costa, Hugo Foody, Giles M. Boyd, Doreen S. |
| author_facet | Costa, Hugo Foody, Giles M. Boyd, Doreen S. |
| author_sort | Costa, Hugo |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Land cover mapping via image classification is sometimes realized through object-based image analysis. Objects are typically constructed by partitioning imagery into spatially contiguous groups of pixels through image segmentation and used as the basic spatial unit of analysis. As it is typically desirable to know the accuracy with which the objects have been delimited prior to undertaking the classification, numerous methods have been used for accuracy assessment. This paper reviews the state-of-the-art of image segmentation accuracy assessment in land cover mapping applications. First the literature published in three major remote sensing journals during 2014–2015 is reviewed to provide an overview of the field. This revealed that qualitative assessment based on visual interpretation was a widely-used method, but a range of quantitative approaches is available. In particular, the empirical discrepancy or supervised methods that use reference data for assessment are thoroughly reviewed as they were the most frequently used approach in the literature surveyed. Supervised methods are grouped into two main categories, geometric and non-geometric, and are translated here to a common notation which enables them to be coherently and unambiguously described. Some key considerations on method selection for land cover mapping applications are provided, and some research needs are discussed. |
| first_indexed | 2025-11-14T20:11:04Z |
| format | Article |
| id | nottingham-48969 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:11:04Z |
| publishDate | 2018 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-489692020-05-04T19:29:56Z https://eprints.nottingham.ac.uk/48969/ Supervised methods of image segmentation accuracy assessment in land cover mapping Costa, Hugo Foody, Giles M. Boyd, Doreen S. Land cover mapping via image classification is sometimes realized through object-based image analysis. Objects are typically constructed by partitioning imagery into spatially contiguous groups of pixels through image segmentation and used as the basic spatial unit of analysis. As it is typically desirable to know the accuracy with which the objects have been delimited prior to undertaking the classification, numerous methods have been used for accuracy assessment. This paper reviews the state-of-the-art of image segmentation accuracy assessment in land cover mapping applications. First the literature published in three major remote sensing journals during 2014–2015 is reviewed to provide an overview of the field. This revealed that qualitative assessment based on visual interpretation was a widely-used method, but a range of quantitative approaches is available. In particular, the empirical discrepancy or supervised methods that use reference data for assessment are thoroughly reviewed as they were the most frequently used approach in the literature surveyed. Supervised methods are grouped into two main categories, geometric and non-geometric, and are translated here to a common notation which enables them to be coherently and unambiguously described. Some key considerations on method selection for land cover mapping applications are provided, and some research needs are discussed. Elsevier 2018-02-01 Article PeerReviewed Costa, Hugo, Foody, Giles M. and Boyd, Doreen S. (2018) Supervised methods of image segmentation accuracy assessment in land cover mapping. Remote Sensing of Environment, 205 . pp. 338-351. ISSN 0034-4257 OBIA; GEOBIA; Empirical goodness methods; Quality; Classification https://doi.org/10.1016/j.rse.2017.11.024 doi:10.1016/j.rse.2017.11.024 doi:10.1016/j.rse.2017.11.024 |
| spellingShingle | OBIA; GEOBIA; Empirical goodness methods; Quality; Classification Costa, Hugo Foody, Giles M. Boyd, Doreen S. Supervised methods of image segmentation accuracy assessment in land cover mapping |
| title | Supervised methods of image segmentation accuracy assessment in land cover mapping |
| title_full | Supervised methods of image segmentation accuracy assessment in land cover mapping |
| title_fullStr | Supervised methods of image segmentation accuracy assessment in land cover mapping |
| title_full_unstemmed | Supervised methods of image segmentation accuracy assessment in land cover mapping |
| title_short | Supervised methods of image segmentation accuracy assessment in land cover mapping |
| title_sort | supervised methods of image segmentation accuracy assessment in land cover mapping |
| topic | OBIA; GEOBIA; Empirical goodness methods; Quality; Classification |
| url | https://eprints.nottingham.ac.uk/48969/ https://eprints.nottingham.ac.uk/48969/ https://eprints.nottingham.ac.uk/48969/ |