Training data selection (SCP)
(→Defining land cover classes) |
(→Defining land cover classes) |
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| Line 21: | Line 21: | ||
| 1 | | 1 | ||
| Artificial surfaces | | Artificial surfaces | ||
| − | | | + | | 11 |
| Built-up | | Built-up | ||
| 230-77-0 | | 230-77-0 | ||
| Line 27: | Line 27: | ||
| 2 | | 2 | ||
| Agricultural | | Agricultural | ||
| − | | | + | | 21 |
| Arable land | | Arable land | ||
| 255-255-168 | | 255-255-168 | ||
| Line 33: | Line 33: | ||
| 2 | | 2 | ||
| Agricultural | | Agricultural | ||
| − | | | + | | 22 |
| Bare soil | | Bare soil | ||
| 253-191-111 | | 253-191-111 | ||
| Line 39: | Line 39: | ||
| 2 | | 2 | ||
| Agricultural | | Agricultural | ||
| − | | | + | | 23 |
| Pasture | | Pasture | ||
| 230-230-77 | | 230-230-77 | ||
| Line 45: | Line 45: | ||
| 3 | | 3 | ||
| Natural and semi-natural areas | | Natural and semi-natural areas | ||
| − | | | + | | 31 |
| Broad leaved tree cover | | Broad leaved tree cover | ||
| 128-255-0 | | 128-255-0 | ||
| Line 51: | Line 51: | ||
| 3 | | 3 | ||
| Natural and semi-natural areas | | Natural and semi-natural areas | ||
| − | | | + | | 32 |
| Coniferous tree cover | | Coniferous tree cover | ||
| 128-255-0 | | 128-255-0 | ||
| Line 57: | Line 57: | ||
| 4 | | 4 | ||
| Wetlands | | Wetlands | ||
| − | | | + | | 41 |
| Reed | | Reed | ||
| 128-255-0 | | 128-255-0 | ||
| Line 63: | Line 63: | ||
| 5 | | 5 | ||
| Water | | Water | ||
| − | | | + | | 51 |
| Water | | Water | ||
| 128-242-230 | | 128-242-230 | ||
| Line 69: | Line 69: | ||
| 9 | | 9 | ||
| Miscellaneous | | Miscellaneous | ||
| − | | | + | | 91 |
| No data (cloud and shadow) | | No data (cloud and shadow) | ||
| 255-255-255 | | 255-255-255 | ||
|- | |- | ||
| − | |||
| 9 | | 9 | ||
| Miscellaneous | | Miscellaneous | ||
| − | | | + | | 92 |
| No data (missing imagery) | | No data (missing imagery) | ||
| 0-0-0 | | 0-0-0 | ||
| − | |||
|} | |} | ||
[[category:QGIS Tutorial]] | [[category:QGIS Tutorial]] | ||
Revision as of 13:04, 19 April 2018
Defining land cover classes
Before starting to map land cover classes using Sentinel-2 satellite images we need clear definitions and a classification scheme. An example for a hierarchical land use and land cover (LUC) classification scheme is the European Urban Atlas. The scheme defines 5 main meta-classes where the class 1. Artificial surfaces has many sub classes as shown in figure A.
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The specification other metaclasses is not as detailed. If we are more interested in forest and open area classes we need to adapt and modify this scheme. On the lowest level not all classes defined in the European Urban Atlas do also appear in the surroundings of Göttingen (figure B). In addition we need to consider the phenolgical development of vegetation at specific acquisiton dates and to specify more classes which can possibly be identified in multispectral feature space of the satellite image. An example of an adapted simplified scheme is shown in the table below.
| MC ID | MC info | C ID | C info | RGB code |
|---|---|---|---|---|
| 1 | Artificial surfaces | 11 | Built-up | 230-77-0 |
| 2 | Agricultural | 21 | Arable land | 255-255-168 |
| 2 | Agricultural | 22 | Bare soil | 253-191-111 |
| 2 | Agricultural | 23 | Pasture | 230-230-77 |
| 3 | Natural and semi-natural areas | 31 | Broad leaved tree cover | 128-255-0 |
| 3 | Natural and semi-natural areas | 32 | Coniferous tree cover | 128-255-0 |
| 4 | Wetlands | 41 | Reed | 128-255-0 |
| 5 | Water | 51 | Water | 128-242-230 |
| 9 | Miscellaneous | 91 | No data (cloud and shadow) | 255-255-255 |
| 9 | Miscellaneous | 92 | No data (missing imagery) | 0-0-0 |
