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A STOCHASTIC POSITION SENSING SYSTEM BASED ON MACHINE VISION AND WHEEL ENCODERS

Date

1992-06

Journal Title

Journal ISSN

Volume Title

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Type

Degree Level

Masters

Abstract

This thesis presents a system to determine the position of a free-roving autonomous robot in an unknown environment. Data from multiple sensors and multiple readings are fused together to increase the sensing accuracy over that available from any one of the sensors. The analysis of the data also provides a means to evaluate the statistical level of uncertainty in the position of the robot. The fused sensor data are used to build a World Model or map; since the fused sensor data are stochastic then the features (parameters, objects) in the World Model are also stochastic. The position is then determined by the relative position of features with respect to the World Model. The sensors used for the analysis are cameras at two locations on the robot, and wheel encoders. Positional accuracy of approximately 9 mm was achieved while the robot moved in an unstructured office environment

Description

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Citation

Degree

Master of Science (M.Sc.)

Department

Electrical Engineering

Program

Committee

Part Of

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DOI

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