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

fYear

2011

fDate

7-8 Dec. 2011

Firstpage

1

Lastpage

6

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;

fLanguage

English

Publisher

ieee

Conference_Titel

3D Imaging (IC3D), 2011 International Conference on

Conference_Location

Liege

Print_ISBN

978-1-4799-1577-4

Type

conf

DOI

10.1109/IC3D.2011.6584390

Filename

6584390