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[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

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Recognition and Location of Objects <strong>in</strong> the Visual Field of a <strong>UAV</strong> <strong>Vision</strong> System 37<br />

classifier <strong>in</strong> the extended 1-dimensional features space is constructed,<br />

where for each of 1 of tra<strong>in</strong><strong>in</strong>g vectors is placed on the “positive” side of<br />

the hyperplane. This is the algorithm that is named the Kesler construction.<br />

5 Experimental Researches<br />

In the tests related to the classification that were carried out, four groups of objects<br />

form<strong>in</strong>g for classes consist<strong>in</strong>g of 15, 1, … 4 tra<strong>in</strong><strong>in</strong>g vectors <strong>in</strong> each of<br />

class. Picture 4 shows the analyzed pictorial scenes conta<strong>in</strong><strong>in</strong>g objects, , on the<br />

basis of which a tra<strong>in</strong><strong>in</strong>g set of 60 abundance was created.<br />

a. b.<br />

c. d.<br />

Fig. 4. Pictures conta<strong>in</strong><strong>in</strong>g the objects creat<strong>in</strong>g the tra<strong>in</strong><strong>in</strong>g set of the classified: a. class -<br />

squares, b. class -circles, c. class triangles, d. -crosses<br />

Multiple tests carried out on the tra<strong>in</strong><strong>in</strong>g set constructed <strong>in</strong> such a way, did not<br />

resulted <strong>in</strong> a fully satisfactory outcome. In the iterative Rosenblatt algorithms for<br />

the problem of the 4 <strong>in</strong>dependent perceptrons and for the Kesler construction<br />

a correct solution was not obta<strong>in</strong>ed. Regardless of the choice of the start<strong>in</strong>g po<strong>in</strong>t<br />

0 and the value of the tra<strong>in</strong><strong>in</strong>g factor , the algorithms did not f<strong>in</strong>d the<br />

hyperplane (-y), for which all of the tra<strong>in</strong><strong>in</strong>g actors of the set were correctly<br />

classified. This problem is probably the outcome of the assumptions failure, which<br />

were required <strong>in</strong> the construction of the perceptron, and which relate to the l<strong>in</strong>ear<br />

separation of the classes <strong>in</strong> the features dimension. Further <strong>in</strong>vestigation <strong>in</strong>to the<br />

<strong>auth</strong>enticity of such an assumption is pretty difficult due to the large dimension of<br />

the features’ space l 22.

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