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Moncler Stockists Ireland eliminated This is achieved by carefully
Conventional time-of-flight sonar sensing is widely used within the autonomous mobile robot research community. One of its most severe problems is known as crosstalk. This paper presents experimental results of a new approach which allows one to operate a set of sonar sensors simultaneously. Nevertheless, frequent misreadings caused by crosstalk or external ultrasound sources are eliminated. This is achieved by carefully designing the emitted bursts, i.e. by using appropriate pseudo-random sequences together Moncler Stockists Ireland with a matched filter receiver well known from radar applications. We describe an algorithm for the detection of ellipse shapes in images, using the Randomized Hough Transform. The method is compared with three other Hough-based algorithms. Tests are performed using both noise-free and noisy images, and several real-world images. The algorithm was found to give improvements in accuracy, and a reduction in computation time and the number of false alarms detected. A program allowing the reader to experiment with these algorithms can Moncler Hats For Men be found at the WWW address http://ciips.ee.uwa.edu.au/Papers/Journal_Papers/1998/01/Index.html.