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A new correlation-based method for evaluation of the degree of localized corrosion damage on rough surface using video inspection data signal is proposed. The possibility to evaluate very low values of corrosion degree in the presence of high-level noises, typical of water/underwater inspection of constructions is a key advantage of the proposed method. Results of the correla tion measurement system calibration and evaluation of its accuracy are presented. Parameters of signals models are obtained from laboratory experiments for pitting corrosion testing of steel samples.

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