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We use a Mycin-like uncertainty management but we include a factor imp
which defines a relative importance
of expert knowledge information source and grey levels image information
source:
0 means that the expert knowledge is not even taken into account and The algorithm is described below:
IF ( 
AND 
) THEN
ELSE IF (
ELSE IF (
ELSE |
This algorithm is summarized by the following figure :
(for 
values -1, 
, 
, +1, giving 
for all possible three values imp, 
, 
).
If more than one production rule can be activated for an identical conclusion (on class i for example), the conclusion will be assigned a combined certainty factor computed by the following commutative and associative operation.
For example :
Application of rule 1 gives class i ( 
) and application of rule 2 gives class i ( 
)
then the combined certainty factor
will be :
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At the end of the process, each point is classified in each class with updated certainty factors, so the final classification can take place.
IRIT-UPS
AND 
) THEN
AND 
) THEN
