Title :
Stereoscopic vehicle speed measurement - System calibration and synchronization errors analysis
Author :
Lukic, Vojislav ; Vujic, Sasa ; Makarov, A. ; Popovic, Zoya
Author_Institution :
Vlatacom Resaearch & Dev. Center, Belgrade, Serbia
Abstract :
This paper presents a system and an algorithm for the estimation of translational speed of moving objects. The speed estimation is based on stereoscopic analysis of displacements of a region of interest on a moving object. The system is applied to vehicle speed measurement. A legacy automatic license plate recognition (ALPR) algorithm is used for license plate segmentation. The license plate is used as region of interest (RoI) and is tracked throughout a video stream. The RoI displacement and the elapsed time are measured in order to provide the vehicle average speed estimate. The system calibration is described in detail, as well as its simplifying effect on displacement measurement. The analysis of possible errors and artifacts is given and illustrated by experimental results.
Keywords :
calibration; displacement measurement; error analysis; image recognition; image segmentation; stereo image processing; velocity measurement; video streaming; RoI displacement; displacement measurement; displacement stereoscopic analysis; legacy ALPR algorithm; legacy automatic license plate recognition algorithm; license plate segmentation; moving object translational speed estimation; region of interest; stereoscopic vehicle speed measurement; synchronization errors analysis; system calibration; video stream; Calibration; Cameras; Equations; Licenses; Measurement uncertainty; Synchronization; Vehicles; ALPR; Stereoscopy; speed estimation;
Conference_Titel :
3D Imaging (IC3D), 2011 International Conference on
Conference_Location :
Liege
Print_ISBN :
978-1-4799-1577-4
DOI :
10.1109/IC3D.2011.6584390
