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Two problems in calibration : Accurate extraction of feature points

Accurate Feature Extraction and Control Point Correction for Camera Calibration with a Mono-Plane Target. Y. Xiao, R.B. Fisher, University of Edinburgh. Control point correction: Laser printing is NOT 100% accurate; Printing errors produce systematic bias in calibration

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Two problems in calibration : Accurate extraction of feature points

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  1. Accurate Feature Extraction and Control Point Correction for Camera Calibration with a Mono-Plane Target Y. Xiao, R.B. Fisher, University of Edinburgh • Control point correction: • Laser printing is NOT 100% accurate; • Printing errors produce systematic bias in calibration • Quite often ignored in vision community Two problems in calibration : • Accurate extraction of feature points • Accurate estimate of 3D calibration points Our algorithms improve both! Blob Detection Raw Calibration Ellipse Parameter Estimate Ellipse Parameter Optimization Multi-view of a calibration chart Results Synthetic data Real data: evaluation with 3 stereo vision systems MOID: Maximize Outside-Inside Difference

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