High-definition visualization method of pipe magnetic leakage data

Abstract

The invention relates to a high-definition visualization method of pipe magnetic leakage data. The method comprises the steps that magnetic leakage data is collected and preprocessed to obtain pre-processed magnetic leakage detection data H; the magnetic leakage detection data H is classified to obtain classification labels of the magnetic leakage data; the classification labels C0 of the magneticleakage data are used to correct classification of the magnetic leakage data and display a sampling curve, and corrected classification labels Cnew are obtained; grayscale mapping is carried out on the magnetic leakage data locally, and an enhanced magnetic leakage data grayscale map Gnew is displayed; and pseudo color conversion is carried out on the magnetic leakage data, the grayscale values,converted from the magnetic leakage data, in different labels are converted into an RGB color space according to the corrected classification labels Cnew through the grayscale level-color transformation method by taking the different classification labels as grayscale value division intervals, and a pseudo color image of the magnetic leakage data is displayed. The curve map display effect is improved, the visualization effect of the magnetic leakage data is improved, characteristic information of magnetic leakage signals is reserved completely, the data display efficiency is improved, and thememory burden is alleviated.

Description

technical field [0001] The invention relates to a pipeline non-destructive testing and data visualization technology, in particular to a high-definition visualization method for pipeline magnetic flux leakage data. Background technique [0002] Deep-sea oil and gas pipelines are in the harsh seabed environment all year round, and are easily affected by complex environments such as high pressure, high corrosion, etc. Once leakage occurs, it will cause great ecological pollution and energy waste, so non-destructive testing of pipelines is particularly necessary. [0003] Magnetic flux leakage detection technology is one of the commonly used technologies for defect detection of pipelines. With the improvement of hardware technology and sensor manufacturing process, long-distance pipeline inspection has become a reality, and the number and sensitivity of the sensors arranged have been greatly improved, which can more accurately detect subtle defects or other pipeline status info...

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