The development of a new approach to the measurement of roof topping means that such deformation no longer has to be measured manually. Detailed comparisons between deviation values calculated on the basis of inspection data gathered with the High Resolution Geometry Tool and actual field measurements show the effectiveness of the hybrid approach to measuring roof topping effects. Not only is the tool able to detect such anomalies, but they can be differentiated and quantified along the long seam on the one hand, and in terms of overall ovality of the pipe circumference on the other. Most importantly, the measured results comply with the detection threshold and quantification accuracy requirements typically used in the industry.
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