基于Canny与RANSAC算法的边缘直线检测改进方法  

Improved edge straight-line detection using Canny and RANSAC algorithms

作　　者：苏伟君 江吉彬 吕鑫平 SU Weijun;JIANG Jibin;LYU Xinping(School of Aviation,Liming Vocational University,Quanzhou 362000,China;School of Mechanical and Automotive Engineering,Fujian University of Technology,Fuzhou 350118,China;Ruijie Networks Co.,Ltd.,Fuzhou 350118,China)

机构地区：[1]黎明职业大学航空学院,福建泉州362000 [2]福建理工大学机械与汽车工程学院,福建福州350118 [3]锐捷网络股份有限公司,福建福州350118

出　　处：《福建理工大学学报》2025年第1期64-70,共7页JOURNAL OF FUJILAN UNIVERSITY OF TECHNOLOGY

基　　金：福建省中青年教师教育科研项目(科技类)(JAT201303)。

摘　　要：为了提高触摸屏直线检测的精度和实时性,提出了基于Canny算法与RANSAC算法相结合的边缘直线检测方法。引入自适应Canny边缘检测算法,通过双边滤波、综合应用Sobel算子和Scharr算子计算图像梯度。利用最大类间方差法去除噪声、抑制伪边缘并确定阈值,实现了高精度的触摸屏边缘检测并提取了最优的边缘直线。通过改进的RANSAC算法对触摸屏边缘点进行直线拟合,在保证直线检测精度的前提下,满足了系统的实时性要求。在触摸屏贴合系统实验平台上的测试结果表明,该方法的边缘直线检测准确性高、实时响应良好,可以满足预期检测要求。To enhance the precision and real-time performance of straight-line detection in touchscreens,an edge straight-line detection method combining the Canny algorithm with the RANSAC algorithm is proposed.The adaptive Canny edge detection algorithm is introduced,which calculates image gradients through bilateral filtering and the comprehensive application of Sobel and Scharr operators.By employing the maximum inter-class variance method to remove noise,suppress false edges,and determine thresholds,high-precision touchscreen edge detection is achieved,along with the extraction of optimal edge lines.The improved RANSAC algorithm is utilized for straight-line fitting of touchscreen edge points,satisfying real-time system requirements while ensuring detection accuracy.Experimental results on the touchscreen alignment system platform demonstrate that this method exhibits high accuracy in edge straight-line detection and excellent real-time responsiveness,meeting expected detection requirements.

关 键 词：CANNY算法 边缘直线检测 RANSAC算法 直线拟合 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]