[1]苑玮琦,赵佩瑶.基于 Canny 的自适应换热器板片边缘检测方法[J].计算机技术与发展,2021,31(11):81-85.[doi:10. 3969 / j. issn. 1673-629X. 2021. 11. 014]
　YUAN Wei-qi,ZHAO Pei-yao.An Adaptive Edge Detection Method for Plate of Heat Exchanger Based on Canny[J].,2021,31(11):81-85.[doi:10. 3969 / j. issn. 1673-629X. 2021. 11. 014]
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基于 Canny 的自适应换热器板片边缘检测方法()
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《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

卷:
31
期数:
2021年11期
页码:
81-85
栏目:
图形与图像
出版日期:
2021-11-10

文章信息/Info

Title:
An Adaptive Edge Detection Method for Plate of Heat Exchanger Based on Canny
文章编号:
1673-629X(2021)11-0081-05
作者:
苑玮琦1 ; 赵佩瑶2
1. 沈阳工业大学 视觉检测技术研究所 辽宁省机器视觉重点实验室,辽宁 沈阳 110870;
2. 沈阳工业大学 信息科学与工程学院,辽宁 沈阳 110870
Author(s):
YUAN Wei-qi1 ; ZHAO Pei-yao2
1. Key Laboratory of Machine Vision in Liaoning Province,Visual Inspection Institute of Shenyang University of Technology,Shenyang 110870,China;
2. School of Information Science and Engineering,Shenyang University of Technology,Shenyang 110870,China
关键词:
板式热交换器; 边缘检测; Canny 算法; 自适应阈值; 梯度极大值
Keywords:
plate heat exchanger; edge detection; Canny algorithm; adaptive threshold; gradient magnitude
分类号:
TP302
DOI:
10. 3969 / j. issn. 1673-629X. 2021. 11. 014
摘要:
板式换热器板片型号多达上百种,每种型号的材质与结构也不尽相同,对不同亮暗不同纹理的区域进行定位,使用固定阈值的边缘检测方法难以保障检测结果。 针对此问题,提出一种基于 Canny 的自适应板式换热器板片边缘检测方法。 该方法根据不同型号的波纹板自动调整边缘检测参数, 其中包括标准差、高低阈值,使其与所处理的波纹结构相适应,以达到最佳的边缘定位效果。 通过数学模型推导出标准差与边缘宽度以及高低阈值与边缘高度之间的关系,利用梯度极大值找出图像中像素值发生跃迁的位置来得到粗略的边缘点信息, 将极大值所获得的灰度过渡带与水平灰度剖面线做交集得到边缘的宽度与高度,就此获得 Canny 边缘检测的理想参数。 实验结果表明,该方法能有效解决不同型号板片对区域定位的影响,为 Canny 算子在钢材边缘检测的应用提供了新的思路和技术参考。
Abstract:
There are as many as hundreds of plate types of plate heat exchanger,with different materials and structures for each type. The edge detection method with fixed threshold is difficult to guarantee the detection results when locating the regions with different light and dark textures. To solve this problem,a Canny adaptive plate heat exchanger plate edge detection method is proposed. The edge detection parameters,such as standard deviation and high and low thresholds,are automatically adjusted according to different types of corrugated plates,so that they could be adapted? to the processed corrugated structure to achieve the best edge positioning effect. First mathematical model is deduced by the standard deviation and edge width,and the relationship between the high and low threshold and edge height,and then the rough edge point information is obtained? by using the gradient maximum value to find the position where the pixel value transitions in the image. The gray transition zone obtained by the maximum value is intersected with the horizontal gray profile line to obtain the width and height of the edge, thus obtaining the ideal parameter of Canny edge detection. The experiment shows that the proposed method can effectively solve the influence of different types of plates on regional positioning, and provides a new idea and technical reference for the application of Canny operator in steel edge detection.

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更新日期/Last Update: 2021-11-10