Title :
A pixel range gated imaging system for underwater viewing and range finding
Author :
Yin, Zhuoyu ; Zhang, S. ; Guo, X. ; Zhu, Y. ; Yi, B.Q.
Author_Institution :
Dept. of Appl. Phys., Jiao Tong Univ., Shanghai, China
Abstract :
A scheme called a pixel range-gated imaging system, used as underwater viewing and range finding equipment in an autonomous underwater vehicle, is presented. In this system an underwater object is lit by a pulsed blue-green laser beam performing flying spot scanning, and a particular receiver is used to implement the range gating to each light pulse returned from each of the pixels on the objects. The receiver is a light-light-electric converter. Its output signal, after analog-digital conversion is fed to a computer, which performs necessary image processing, and the signal is then displayed on a cathode ray tube or stored on tape
Keywords :
computer vision; computerised picture processing; distance measurement; laser beam applications; marine systems; mobile robots; transport computer control; analog-digital conversion; autonomous underwater vehicle; flying spot scanning; image processing; light-light-electric converter; pixel range gated imaging system; pulsed blue-green laser beam; range finding; underwater viewing; Backscatter; Displays; Laser beams; Laser modes; Laser theory; Object detection; Optical pulses; Pixel; Power lasers; Underwater vehicles;
Conference_Titel :
Autonomous Underwater Vehicle Technology, 1990. AUV '90., Proceedings of the (1990) Symposium on
Conference_Location :
Washington, DC
DOI :
10.1109/AUV.1990.110469
