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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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Object Track<strong>in</strong>g for Rapid Camera Movements <strong>in</strong> 3D Space 67<br />

This way we obta<strong>in</strong> correct measurement of the object position. We measure it<br />

only if the object is <strong>in</strong> the center of the picture. However, the control signal<br />

changes the camera position only if the object is out of the center of the picture.<br />

4 Examples of Track<strong>in</strong>g Algorithms Operation <strong>in</strong> the<br />

Presence of Disturbances<br />

In 3D space the possibilities of various disturbances occurrence are significantly<br />

<strong>in</strong>creased. These changes of helicopter position <strong>in</strong> the horizontal and vertical plane<br />

impact on the camera position. What is more, distortion <strong>in</strong> the form of the helicopter<br />

rotation has an impact on the camera rotation <strong>in</strong> two rotation axes ((x, y) and S<br />

planes).<br />

Figure 10 represents the situation after distortion when the helicopter changes<br />

its position only <strong>in</strong> the (x, y) plane where . The helicopter with the<br />

camera moves between the po<strong>in</strong>ts, <strong>in</strong> projection on the (x. y) plane, and at the<br />

same time it goes around the object.<br />

Fig. 10. The camera position dur<strong>in</strong>g disturbance <strong>in</strong> the form of the helicopter position<br />

changes <strong>in</strong> the (x,y) plane

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