13.08.2018 Views

[Studies in Computational Intelligence 481] Artur Babiarz, Robert Bieda, Karol Jędrasiak, Aleksander Nawrat (auth.), Aleksander Nawrat, Zygmunt Kuś (eds.) - Vision Based Systemsfor UAV Applications (2013, Sprin

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

44 R. <strong>Bieda</strong> et al.<br />

where and are respectively the covariance matrix and the mean class vector<br />

, 1,…,4, designated for vectors form<strong>in</strong>g a class after the FLD transformation.<br />

The process of the classification with the use of function (44) processes<br />

as follows : Feature vector belongs to class when:<br />

max , ,…, , (43)<br />

In case, where the zoom ratio will be set on a bit lover level ( for e.g. 96%)<br />

then the dimension of feature vectors after FLD transformation will reduce itself<br />

to the one-dimension space ( 1). The arrangement of the classes can be described<br />

as an outcome of projection of the plane on picture 6b on axis. In<br />

this case, the classification process can be carried out on the basis of the m<strong>in</strong>imiz<strong>in</strong>g<br />

the differences between the feature and the mean value of this feature for<br />

the particular classes:<br />

m<strong>in</strong> | | (44)<br />

,..<br />

The outcome of the activity of the classifier which bases on the above example is<br />

show on Fig 7.<br />

a. b.<br />

Fig. 7. The outcome of the classification <strong>in</strong> the dimension of the features after the FLD<br />

transformation : a. case 2D b. case 1D<br />

As it can be noticed <strong>in</strong> Fig 7 <strong>in</strong> both cases the outcome of the classification is<br />

correct. This gives hope for the construction of a autonomic visual system. Such<br />

system, ‘pre-learned” is able to <strong>in</strong>dependently analyze the image of the surround<strong>in</strong>gs<br />

of the manipulator and send him the data needed to completion of the overrid<strong>in</strong>g<br />

task.<br />

8 Summary<br />

The results obta<strong>in</strong>ed show that the construction of the co-operat<strong>in</strong>g classifier and<br />

the visual system is possible. The obta<strong>in</strong>ed results are promis<strong>in</strong>g and appear to

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!