Method for improving X-ray image quality of steel wire rope core conveyer belt
A steel cord and conveyor belt technology, applied in the image correction and filtering fields to improve the image quality of steel cord conveyor belts, can solve the problems of striped or isolated point noise, image distortion, light and dark, pixel bad track, etc., and achieve simple algorithm , fast speed and small amount of computation
Active Publication Date: 2014-08-20
TIANJIN POLYTECHNIC UNIV +1
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[0016] The purpose of the present invention is to propose a method for improving the quality of X-ray images of steel cord conveyor belts, so as to solve the problems of current image distortion (uneven light and shade, striped or isolated point noise, pixel bad tracks, etc.)
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[0036] The specific implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples.
[0037] The overall operation process of the method proposed by the present invention is as attached figure 1 As shown, the specific implementation is generally divided into two stages, that is, firstly, according to the requirements, determine the intensity of an X-ray source and the correction coefficient G of each pixel i , hereinafter referred to as the parameter acquisition stage; then the application stage, to realize the correction and filtering of the steel cord conveyor belt to be detected.
[0038] The operation process of the parameter acquisition phase is as follows:
[0039] Step 1, turn off the X-ray source, and obtain the output value A of the X-ray array detector under the condition of no X-ray irradiation i , where i represents the i-th pixel of the X-ray array detector;
[0040] Step 2, using the X-ray a...
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The invention discloses a method for improving the X-ray image quality of a steel wire rope core conveyer belt, which belongs to the field of non-destructive detection, and aims at solving the problems that a steel wire rope core conveyer belt X-ray image based on an X-ray array detector is provided with bright middle part and dark two sides, has stripy or isolated point noise, bad pixel tracks are caused, and the like. According to the imaging characteristics of the X-ray array detector, the specification of the steel wire rope core conveyer belt to be detected and the structural characteristics of a steel wire rope core conveyer belt non-destructive detection system based on X ray, appropriate X-ray source intensity is confirmed through experiment, the correction coefficient of each pixel of the X-ray array detector is obtained through calculation, and finally processing result is obtained through 1*3 median filtering. By adopting the method, correction and filtering on the steel wire rope core conveyer belt X-ray image can be rapidly and conveniently achieved, the image quality is greatly improved, and thus good application values in industrial application are achieved.
Description
technical field [0001] The invention belongs to the field of nondestructive testing, and in particular relates to an image correction and filtering method for improving the image quality of a steel cord conveyor belt in X-ray-based nondestructive testing of a steel cord conveyor belt. Background technique [0002] Steel cord conveyor belts are widely used in coal mine production. Faults occur due to various reasons during use. If they are not detected and dealt with in time, safety accidents such as broken belts or longitudinal tearing will occur, which will seriously affect safe production. [1-3] . Therefore, each coal mine has formulated a corresponding inspection system for steel cord conveyor belts. [0003] For the detection of steel cord conveyor belts, in addition to manual detection, researchers have also proposed effective methods such as eddy current detection, magnetic induction detection, shock wave detection and X-ray detection, and have been applied to a certa...
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Login to View More IPC IPC(8): G01N23/18G06F19/00
Inventor 苗长云李现国叶春青仲为亮高长成
Owner TIANJIN POLYTECHNIC UNIV