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Adaptive Fusion of Spectral Bands MSS4 to MSS7



The following classification is reached (table 28) with the degree of consensus h computed locally to each pixel.

The adaptive fusion of the four spectral bands MSS4 to MSS7 gives a result almost identical to that obtained by conjunctive fusion (53.68% of pixels correctly classified for adaptive fusion against 53.35% for conjunctive fusion). On the other hand, all the pixels were classified. This is due to the ``disjunctive fusion'' part of the rule which allowed to assign to a class the pixels which had not been classified by conjunctive fusion.

Adaptive fusion does not allow to obtain better results than simple conjunctive fusion on this example (except for unclassified pixels) because the spectral bands have a too strong degree of coherence. There are seldom conflicts to solve, so the ``conjunctive fusion'' part of the adaptive rule is used in 98.79% of the cases. So results are similar to those obtained by simple conjunctive fusion.



  

Table 28: Adaptive fusion of spectral bands MSS4 to MSS7.

Rates of classification obtained
$\mbox{\ }$Class Number of pixels  

correctly classified

(A)             

Number of pixels

in samples     

(B)            

Rate of pixels    

correctly classified

(A/B)         

       1 151 459 32.90%
       2 230 459 50.11%
       3 122 306 39.87%
       4 204 391 52.17%
       5 268 459 58.39%
       6 294 459 64.05%
       7 333 459 72.55%
       8 299 459 65.14%
       9 198 459 43.14%
TOTAL 2099 3910 53.68%


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