Steel rail surface machining quality quantitative measurement method
The invention discloses a steel rail surface machining quality quantitative measurement method. The steel rail surface machining quality quantitative measurement method is characterized in that: a linear light bar is irradiated to the surface of the steel rail through a laser; a steel rail-light bar...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention discloses a steel rail surface machining quality quantitative measurement method. The steel rail surface machining quality quantitative measurement method is characterized in that: a linear light bar is irradiated to the surface of the steel rail through a laser; a steel rail-light bar image of the steel rail and the light bar is obtained through a camera; the light bar is segmented from the steel rail-light bar image; discrete point-taking is performed on the light bar along the X direction so that a light bar center pixel coordinate of each discrete point is extracted; a light bar center point with a minimum vertical coordinate is searched as a feature point; a minimum value point of second derivatives of a light bar curve is searched from the feature points to the left and right sides separately; the minimum value point of the second derivatives on the left and right sides of the feature points is judged as a steel rail welding seam boundary feature point; and the difference value of the feat |
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