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Normalised difference vegetation index threshold values used in urban studies in Poland_
| NDVI Threshold for vegetation | Image data used | Research area | References |
|---|---|---|---|
| 0.3 | Landsat TM, GSD 30 m, 3 Jul. 2006 | Warsaw | Tomaszewska et al. (2011) |
| 0.1 | MODIS, GSD 250 m, 3 Jul. 2006 | Warsaw | Tomaszewska et al. (2011) |
| 0.1 | Digital orthophoto, GSD 0.1 m, May 2014 | Wroclaw | Kubalska and Preuss (2014) |
| 0.2 | IKONOS-2, GSD 1(4) m, 18 Aug. 2005 | Lublin | Krukowski et al. (2016) |
| 0.2 | Landsat 8, GSD 30 m, 3 Jul. 2015 | Łódź | Będkowski and Bielecki (2017) |
| 0.1 | Pléiades 1A, GSD 0.5 m, May 2012 | Warsaw | Pyra and Adamczyk (2018) |
| 0.1 | CIR-orthophoto, GSD 0.25 m, 2015 | Łódź | Pluto-Kossakowska et al. (2018) |
| 0.2 | IKONOS-2, GSD 1(4) m, 18 Aug. 2011 | Lublin | Krukowski (2018) |
| 0.1 | CIR aerial orthophoto, GSD 0.25 m, 2015 | Łódź | Worm et al. (2019) |
| 0.6 | Sentinel 2, GSD 10 m, summer 2018, 2019 | Poland | Łachowski and Łęczek (2020) |
| 0.2 | IKONOS-2, June 2005, GSD = 0.8 m PAN (3.2 m MS) | Poland | Zięba-Kulawik and Wężyk (2022) |
Test set evaluation metrics_
| SSIM | PSNR | RSME | |
|---|---|---|---|
| AVG | 0.7569 | 26.6459 | 0.0504 |
| STD | 0.1083 | 3.6577 | 0.0193 |
| MIN | 0.3589 | 16.3343 | 0.0026 |
| MAX | 0.9987 | 51.7674 | 0.1525 |
Structure of land use in Łódź [km2]_
| Total | Agricultural land | Forest, woody, and bushy land | Residential areas | Industrial areas | Transport areas | Groundwater | Other |
|---|---|---|---|---|---|---|---|
| 293.25 | 113.76 | 24.67 | 47.13 | 13.91 | 42.37 | 1.33 | 1.15 |