Open AccessDevelopment of a 3D Vision Range Sensor Using Equiphase Light Section Method
Author(s) -
Michio Kumagai
Publication year - 2005
Publication title -
journal of robotics and mechatronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 19
eISSN - 1883-8049
pISSN - 0915-3942
DOI - 10.20965/jrm.2005.p0110
Subject(s) - computer vision , artificial intelligence , computer science , light source , plane (geometry) , phase (matter) , structured light , cylinder , section (typography) , range (aeronautics) , robot , optics , physics , engineering , mathematics , geometry , mechanical engineering , aerospace engineering , operating system , quantum mechanics
Many autonomous and industrial robots require three-dimensional (3D) environmental sensors. Stereovision or laser range finders are often used to detect distance to obstacles or targets. We propose 3D measurement system using active stereovision based on light section and phase shift. A special light source consisting of a rotating cylinder and a lamp projects planes of lights whose intensities vary sinusoidally over time. Each plane phase differs from those of other planes, so we distinguish which plane sectioned the target from the phase. Images from the video camera are processed into phases of each pixel that indicate distance to measured targets. This needs only simple calculation for phase detection and simultaneously operates multiple systems. The basic principle and expansion for practical use are proposed and experimental results are detailed using a trial, verifying the proposal’s effectiveness.