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Geomatics, Volume 5, Issue 2

2025 June - 11 articles

Cover Story: Accurate geospatial data are fundamental for secure land rights and effective land administration. However, many systems struggle with spatial inaccuracies, especially when integrating diverse data sources such as modern surveys and historical maps. This study introduces a novel, AI-driven method using unsupervised clustering to automatically detect these complex errors. Analyzing two real-world Greek datasets, our approach successfully identified and characterized distinct error patterns: a systematic error across a large, ring-shaped area in the first and localized gross errors from historical map digitization in the second. This automated identification provides actionable insights for targeted, cost-effective cadastral renewal, offering a powerful tool for building smarter, more efficient systems aligned with fit-for-purpose principles. View this paper
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Articles (11)

  • Article
  • Open Access
1,774 Views
25 Pages

Horizontal dilution of precision (HDOP) is a widely used quality indicator of Global Navigation Satellite System (GNSS) positioning, considering only satellite geometry. In this study, HDOP was simulated using GNSS almanacs and high-resolution digita...

  • Article
  • Open Access
4 Citations
8,008 Views
23 Pages

The automation in image acquisition and processing using UAV drones has the potential to acquire terrain data that can be utilized for the accurate production of 2D and 3D digital data. In this study, the DJI Phantom 4 drone was employed for large-sc...

  • Review
  • Open Access
2,324 Views
11 Pages

Review of the Problem of the Earth Shape

  • Petr Vaníček,
  • Pavel Novák and
  • Marcelo Santos

The determination of the shape of the Earth has been one of the fundamental problems geodesy was supposed to solve; it has been and possibly still is the main geodetic problem. It is thus appropriate for geodesists to look at this problem periodicall...

  • Hypothesis
  • Open Access
1,939 Views
14 Pages

The pursuit of mergers and acquisitions (M&A) is often an acclaimed strategy for firm growth, resource sharing, and extended reach into new market segments. However, in the healthcare marketplace, there are two very different perspectives related...

  • Article
  • Open Access
1,726 Views
27 Pages

This article presents a comprehensive evaluation of image segmentation methods for monitoring morphological changes in refugee camps, comparing five distinct approaches: ESRI Landviewer clustering, K-means clustering, U-Net segmentation, Meta’s...

  • Article
  • Open Access
1,441 Views
21 Pages

Higher education institutions have played a central role in building sustainability awareness. However, current models only show an effect on students’ knowledge about sustainable development, with a large gap in transformative solutions that s...

  • Technical Note
  • Open Access
1,901 Views
14 Pages

Analysis of Resampling Methods for the Red Edge Band of MSI/Sentinel-2A for Coffee Cultivation Monitoring

  • Rozymario Fagundes,
  • Luiz Patric Kayser,
  • Lúcio de Paula Amaral,
  • Ana Caroline Benedetti,
  • Édson Luis Bolfe,
  • Taya Cristo Parreiras,
  • Manuela Ramos-Ospina and
  • Alejandro Marulanda-Tobón

Spectral indices such as NDRE (Normalized Difference Red Edge Index), CCCI (Canopy Chlorophyll Content Index), and IRECI (Inverted Red Edge Chlorophyll Index), derived from the Red Edge band of MSI/Sentinel-2A (B05, B06, B07), are critical for coffee...

  • Article
  • Open Access
1 Citations
1,118 Views
12 Pages

The cultivation of Moringa oleifera Lam. (M. oleifera) has steadily increased over the past few decades, and interest in the crop continues to rise due to its unique multi-purpose properties. However, knowledge pertaining to its water use to guide de...

  • Article
  • Open Access
2 Citations
2,409 Views
21 Pages

The Cape Floristic Region (CFR) boasts rich biodiversity but faces threats from invasive species and land-use changes. Fynbos wetland vegetation within the CFR is under-mapped despite its crucial role in supporting biodiversity and maintaining hydrol...

  • Article
  • Open Access
3 Citations
3,146 Views
28 Pages

Positional accuracy in cadastral data is fundamental for secure land tenure and efficient land administration. However, many land administration systems (LASs) experience difficulties to meet accuracy standards, particularly when data come from vario...

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Geomatics - ISSN 2673-7418