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OCTOBER 19-20, 2012 - YMCA University of Science & Technology

OCTOBER 19-20, 2012 - YMCA University of Science & Technology

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Proceedings <strong>of</strong> the National Conference on<br />

Trends and Advances in Mechanical Engineering,<br />

<strong>YMCA</strong> <strong>University</strong> <strong>of</strong> <strong>Science</strong> & <strong>Technology</strong>, Faridabad, Haryana, Oct <strong>19</strong>-<strong>20</strong>, <strong>20</strong>12<br />

Fig.5 Top view <strong>of</strong> mobile robot<br />

Fig.6 Front view <strong>of</strong> mobile robot<br />

For capturing images webcamera used is <strong>of</strong> low resolution with 640x480 pixels. Robot is designed to function<br />

according to the type <strong>of</strong> detected colour. Totally three colours are used. System design is such that each colour<br />

attains different functionality. Red, green, blue are used to stop, turn robot towards left and turn right<br />

respectively. Therefore, the values <strong>of</strong> RGB components <strong>of</strong> the images <strong>of</strong> objects are influenced by minimum<br />

light intensity. The minimum light intensity can be easily expressed by colored pictures like Fig. 7. Figs. 7 (a)-<br />

(c) shows the red, blue, green colours as in (a), (b) and (c) respectively.<br />

(a) (b) (c)<br />

Fig. 7 Images captured at minimum light intensity<br />

Since the sensor used is camera, digital signal obtained as a result <strong>of</strong> processed image varies depending on the<br />

light intensity <strong>of</strong> surrounding environment was observed. The higher light intensity can be easily expressed by<br />

colored pictures like Fig. 8. Figs. 8 (a)-(c) shows the red, blue, green colours as in (a), (b) and (c) respectively.<br />

293

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