Figure 9. Geocoding TIR mosaic over DOF image. 
The quality of geocoding was checked on 52 points on all three 
images and the mean deviations of points on both axes, related 
to DOF are: 
TIR VNIR 
M',=+0.9m M,=1706m 
M",=+11m (1) M',=+ 0.4 m (2) 
The mean deviations of position are: 
M'"tl^m (3) M,=+t07m (4) 
When the TIR mosaic was compared with VNIR mosaic, it 
resulted in the following values: 
1.0 m 
1.1 m 
1.5m 
(5) 
Il 
I 
I+ I+ qu 
M, 
M, 
M, 
The selection of checking points for the quality of geocoding 
stipulates TIR image because the good identical details are more 
difficult to recognise on TIR then on VNIR and DOF. 
146 
Figure 10. Overlapping of DOF, VNIR and TIR images with 
marked identical points for the analysis of deviation. 
   
Figure 11. Comparison of maping contents VNIR (green) and 
TIR (red) details after geocoding. 
4. RADIOMETRY 
Geocoding has improved the quality of geometrical 
relationships between the details on mosaics, but it has to be 
determined what happened with radiometry regarding to 
interpolation during the mosaicking and geocoding. VNIR 
images in mosaic are RGB images (blue, green and infra red 
channel). For analysing radiometric quality of mosaics the 
comperison of histograms of 3 samples from geocoding mosaics 
with histograms of original images which show the same area 
like the samples do, was done. 
  
  
  
  
  
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