Title :
High accuracy laser scanned 3-D range sensor
Author :
Matsumoto, Mitsuo
Author_Institution :
Toshiba Corp., Tokyo, Japan
Abstract :
The principle of operation of a high-accuracy three-dimensional range sensor that relies on a laser-beam modulated at dual frequency of 1 GHz is described. An optical system that keeps the receiving optical power of the photodetector constant, despite substantial variations in the measurement range, is discussed. A theoretical equation for determining range errors for this instrument is developed, and it is verified that the values derived from this equation agree with test results. Finally, 3-D computer graphics of a test scene obtained with this sensor are represented
Keywords :
computer graphics; distance measurement; optical radar; 1 GHz; 3-D computer graphics; dual frequency; high-accuracy laser scanned 3D range sensor; high-accuracy three-dimensional range sensor; laser-beam; measurement range; optical system; photodetector; range errors; receiving optical power; test scene; theoretical equation; Computer errors; Equations; Frequency modulation; Laser theory; Optical modulation; Optical sensors; Photodetectors; Power measurement; Sensor phenomena and characterization; Testing;
Conference_Titel :
Industrial Applications of Machine Intelligence and Vision, 1989., International Workshop on
Conference_Location :
Tokyo
DOI :
10.1109/MIV.1989.40542
