Title :
Underwater object recognition technique using ultrasonics
Author :
Ashraf, M. ; Lucas, J.
Author_Institution :
Dept. of Electr. Eng. & Electron., Liverpool Univ., UK
Abstract :
An ultrasonic camera is being developed consisting of multiple transmitters, an acoustic lens and a distributed receiver. The camera uses 1 MHz ultrasonic beams to produce both intensity and range images of the objects being viewed. Techniques are described for multiple object detection and an estimation of object size and shape. A practical implementation of the technique is given and experimental results obtained in a laboratory tank are reported. Preliminary results have been presented. The system will be used as an ultrasonic 3-D camera for an underwater remotely operated vehicles for the purpose of obstacle avoidance, guidance and position control
Keywords :
cameras; object detection; object recognition; oceanographic equipment; sonar imaging; ultrasonic applications; ultrasonic imaging; underwater sound; 1 MHz; acoustic lens; distributed receiver; guidance; intensity; laboratory tank; multiple object detection; multiple transmitters; object shape; object size; obstacle avoidance; position control; range; ultrasonic 3D camera; ultrasonic beams; underwater object recognition technique; underwater remotely operated vehicles; Acoustic beams; Cameras; Laboratories; Lenses; Object detection; Object recognition; Remotely operated vehicles; Shape; Transmitters; Underwater acoustics;
Conference_Titel :
OCEANS '94. 'Oceans Engineering for Today's Technology and Tomorrow's Preservation.' Proceedings
Conference_Location :
Brest
Print_ISBN :
0-7803-2056-5
DOI :
10.1109/OCEANS.1994.363974
