Figure 6. Examples of two frames of corrected DMSV data.
To determine the validity of the correction, common areas from
overlapping images, were extracted and the means and standard
deviation statistics were compiled. Table 2 is an example of
four common areas that had different illumination in the raw
data and Table 3 shows similar areas after the correction.
Table 2. The means, standard deviation and area summary of four common areas extracted from overlapping areas before
the correction procedure.
Comparison of Means in overlap area of raw images 2b and 2c
[=lzl=l=zl | 1 [| 1111 | |
2b band1 2c band1 2b band2 2c band2 2b band3 2c band3 2b band4 2c band4
Minefloor 65 51.8 37.6 23.3 32.6 19.7 90.7 80.3
Regen 1 33.0 27.3 35.6 23.4 30.2 18.2 69.9 75.1
Native 25.3 19.5 29.0 18.7 22.0 12.2 70.9 59.0
Regen 2 30.9 26.2 34.9 24.2 30.4 19.8 56.0 44.5
Comparison of Standard Deviations in overlap area of raw images 2b and 2c
2b bandl 2c bandl 2b band2 2c band2 2b band3 2c band3 2b band4 2c band4
Minefloor 3.0 3.3 3.4 2.8 30 2.4 5.2 4.9
Regen 1 5.4 5.0 4.1 4.2 3.9 3.6 6.9 7.1
Native 5.1 4.4 6.9 5.5 4.1 3.6 15.4 14.2
Regen 2 4.7 3.9 5.6 54 4.5 4.6 7.5 5.9
Mine floor
eneration 1
Native vegetation
eneration 2
Table 3 The means, standard deviation and area summary of the four common areas extracted from the overlapping areas
after the correction procedure.
Area Summary (number of pixels)
Frame 2b
5233
1626
6443
1428
Frame 2c
Comparison of Means in overlap area of corrected images 2b and 2c
2b bandl 2c bandl 2b band2 2c band2 2b band3 2c band3 2b band4 2c band4
Minefloor 45.2 45.1 51.5 51.5 52.6 52.5 97.2 97.1
Regen 1 38.3 38.3 39.3 40.2 36.1 36.8 75.1 75.6 |
Native 25.3 25.3 33.6 33.7 32.0 32.1 83.0 33.1 |
Regen 2 46.6 46.9 40.5 40.5 36.8 36.8 64.6 64.7 |
286
International Archives of Photogrammetry and Remote Sensing. Vol. XXXI, Part B2. Vienna 1996
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