Use of archival Landsat imagery to monitor urban spatial growth - Urban Remote Sensing: Monitoring, Synthesis and Modeling in the Urban Environment - page 19

TABLE 2.2 Results of thematic accuracy assessment for the land use/cover maps produced with three different types of Landsat data.

Land Map from MSS Data (1988) Map from TM Data (1997/1998) Map from ETM + Data (1999)

use/cover a Producer's User's Conditional Producer's User's Conditional Producer's User's Conditional

accuracy accuracy K index accuracy accuracy K index accuracy accuracy K index

(%) (%) (%) (%) (%) (%)

High-density
urban

93.24 87.34 0.86 96.43 83.31 0.81 88.00 84.62 0.82

Low-density
urban

81.63 85.71 0.81 93.44 78.08 0.75 81.33 87.14 0.84

Cultivated/
exposed
land

95.38 83.78 0.82 85.42 82.00 0.80 86.84 82.50 0.80

Cropland/
grassland

85.92 77.22 0.74 81.36 96.00 0.95 86.79 82.14 0.79

Forest land 85.88 91.25 0.85 94.23 98.00 0.98 90.29 93.00 0.90

Water 94.74 94.74 0.95 100 98.00 0.98 95.12 92.85 0.92

Overall 87.00 0.83 90.10 0.88 87.78 0.85

a At least 50 sample points for each class were used in the thematic accuracy assessment.

FIGURE 2.3 Land use/cover maps in the Atlanta metropolitan area, produced from Landsat images. The boundary of 13
counties in Atlanta is also shown.