Recognition of facial expressions - Knowledge Based Systems ...
Recognition of facial expressions - Knowledge Based Systems ...
Recognition of facial expressions - Knowledge Based Systems ...
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Table 4. The emotion projections <strong>of</strong> each AU combination<br />
Figure 4. BBN used for <strong>facial</strong> expression recognition<br />
For one <strong>of</strong> the conducted experiments, GeNIe Learning Tool was used for doing structure<br />
learning based on the data. The tool was configured so as to take into account the next<br />
learning rules:<br />
- discovery <strong>of</strong> causal relationships had to be done only among the parameters<br />
representing the Action Units and those representing the model parameters<br />
- causal relationships among AU parameters did not exist<br />
- causal relationships among model parameters did not exist<br />
- all the causal relationships among the parameter representing the emotional<br />
<strong>expressions</strong> and the others, representing the model parameters, were given<br />
The structure <strong>of</strong> the resulted Bayesian network is presented in Figure 5.<br />
The associated emotion recognition rate was 63.77 %.<br />
- 28 -