Water Built & Bare Fields and grass Herbaceous & reed Forest Shrubs
Water 18 3 5 7 0 2 51%
Built & Bare 0 201 5 6 6 5 90%
Fields and grass 0 6 188 9 3 1 91%
Herbaceous & reed 0 9 7 177 1 11 86%
Forest 0 2 3 6 195 15 88%
Shrubs 0 9 2 10 20 125 75%
100% 87% 90% 82% 87% 79% 86%

A special case is confusion of water pixels with other land cover classes. As river water tables vary in time and the reference ground truth data does not, most water class errors seemed attributable to this. Figure 5 shows a day-classification result based on a single image. Clearly around some floodplain water bodies (in red circle) bare soil can be observed, when comparing these to the fixed legal map (Figure 6) this base soil comes out as change (red) because is it seen as water to ‘build and bare’ change.