Dr. Divyani Kohli Profile

Dr. Divyani Kohli

at ITC

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Proceedings Article | 4 October 2017 Presentation + Paper

Object-based image analysis for cadastral mapping using satellite images

D. Kohli, S. Crommelinck, R. Bennett, M. Koeva, C. Lemmen

Proceedings Volume 10427, 104270V (2017) https://doi.org/10.1117/12.2280254

KEYWORDS: Image segmentation, Satellites, Satellite imaging, Remote sensing, Image analysis, Image processing, Image resolution

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Cadasters together with land registry form a core ingredient of any land administration system. Cadastral maps comprise of the extent, ownership and value of land which are essential for recording and updating land records. Traditional methods for cadastral surveying and mapping often prove to be labor, cost and time intensive: alternative approaches are thus being researched for creating such maps. With the advent of very high resolution (VHR) imagery, satellite remote sensing offers a tremendous opportunity for (semi)-automation of cadastral boundaries detection. In this paper, we explore the potential of object-based image analysis (OBIA) approach for this purpose by applying two segmentation methods, i.e. MRS (multi-resolution segmentation) and ESP (estimation of scale parameter) to identify visible cadastral boundaries. Results show that a balance between high percentage of completeness and correctness is hard to achieve: a low error of commission often comes with a high error of omission. However, we conclude that the resulting segments/land use polygons can potentially be used as a base for further aggregation into tenure polygons using participatory mapping.

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