Image geometry calibration using multiscale alignment pattern

IMAGE GEOMETRY CALIBRATION USING A MULTISCALE ALIGNMENT A method of decoding a calibration pattern, the method comprising: obtaining an image of the calibration pattern, the calibration pattern having a plurality of concentric rings in a frequency domain, wherein at least two of the plurality of con...

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Hauptverfasser:	Arnison, Matthew Raphael, Fletcher, Peter Alleine
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY MEASURING MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION TARIFF METERING APPARATUS TESTING
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creator	Arnison, Matthew Raphael Fletcher, Peter Alleine
description	IMAGE GEOMETRY CALIBRATION USING A MULTISCALE ALIGNMENT A method of decoding a calibration pattern, the method comprising: obtaining an image of the calibration pattern, the calibration pattern having a plurality of concentric rings in a frequency domain, wherein at least two of the plurality of concentric rings have a different radius; locating, in the obtained image, at least one ring of the plurality of concentric rings in the frequency domain; matching the located at least one ring in the obtained image to a corresponding ring of the plurality of concentric rings in the calibration pattern; determining a scale of the obtained image according to the match of the located at least one ring, and decoding the calibration pattern using the determined scale of the obtained image. Start Fourier transform Angular projection 830 Detect nings Match ring~sr0 Estimate scale Estimate rotation Estimate translation End Fig. 8
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subjects	ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY MEASURING MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION TARIFF METERING APPARATUS TESTING
title	Image geometry calibration using multiscale alignment pattern
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