基于双边滤波与帧差方差法的微小泄漏点检测
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TP274.5

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安徽省自然科学基金(1808085);国家自然科学基金(61673369)


Device of device micro leakage point based oninfrared image
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    摘要:

    为了对器件的微小泄漏进行检测定位,本文介绍了一种利用红外热像对复杂器件进行微小泄漏点的定位方法,红外相机采集多帧经热气加热并进行差压脉冲操作时被测器件的红外图像。对红外图像进行双边滤波去除噪声后,利用泄漏点的温度场的变化即图像灰度值细微变化,提出了一种帧差方差法,通过增强泄漏点灰度值变化,能够准确定位到泄漏点位置,并对得到的泄漏点进行灰度值帧差概率计算确定是否为真泄漏点。实验证明:与其他方法相比本文方法能够有效去除周围噪声,克服了复杂器件易受红外反射率的影响、微小泄漏点变化幅度小、变化较慢的问题。并得到了较好的ROC(受试者工作曲线),同时可以满足工业生产中对微小泄漏检测的要求。

    Abstract:

    In order to detect and locate the small leakage of the device, this paper introduces a minor leakage point for complex devices to complex devices using infrared thermal images due to traditional leak detection methods. Method, the infrared camera collects the infrared image of the device when the heat gas heating and performs a differential pulse operation. After bilateral filtering of the infrared image, after the change in the temperature field of the leakage point, the image gradation value is subjected to fine changes, and a frame difference method is proposed, and the leakage point grayscale value can be accurately positioned to leakage. Point position, and the resulting leakage point performs grayscale frame difference probability to determine whether it is a true leakage point. The experiment proves that this method can effectively remove the peripheral noise compared to other methods, overcome the influence of complex devices vulnerable to the infrared reflectance, and the micro leakage points have a small change in the variation. And get a better ROC (subject working curve), while meeting the requirements of minute leak detection in industrial production.

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李珊红,刘兴,方薇,等. 基于双边滤波与帧差方差法的微小泄漏点检测[J]. 科学技术与工程, 2022, 22(25): 11084-11090.
Li Shanhong, Liuxing, Fang Wei, et al. Device of device micro leakage point based oninfrared image[J]. Science Technology and Engineering,2022,22(25):11084-11090.

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  • 收稿日期:2022-01-11
  • 最后修改日期:2022-06-16
  • 录用日期:2022-06-01
  • 在线发布日期: 2022-09-29
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