AB - © 2015 IEEE. Magnetic Flux Leakage (MFL) is a commonly used technology for non destructive evaluation of ferromagnetic materials. MFL in general is used to estimate isolated defect geometry. In this study, a coarse to fine approach is proposed to interpret MFL measurements for continuous defect profiling. The coarse solution is implemented using a Gaussian Processes (GP) model and the fine approach is implemented using an unconstrained non-linear optimiser. This framework was tested on a 100 year old 600mm diameter cast iron pipe line. Some pipe sections were extracted, grit blasted and profiled using a sub millimetre accurate 3 - D laser scanner. The coarse to fine predictions were compared with the laser measured ground truth with just 1.2 mm RMS error. AU - Wijerathna, B AU - Kodagoda, S AU - Miro, JV AU - Dissanayake, G DA - 2015/11/20 DO - 10.1109/ICIEA.2015.7334271 EP - 1104 JO - Proceedings of the 2015 10th IEEE Conference on Industrial Electronics and Applications, ICIEA 2015 PY - 2015/11/20 SP - 1099 TI - Iterative coarse to fine approach for interpretation of defect profiles using MFL measurements Y1 - 2015/11/20 Y2 - 2024/03/28 ER -