基于像素邻域的传动轴亚像素边缘检测

详细信息

Sub-pixel Edge Detection of Transmission Shaft Based on the Neighboring Pixels

School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China

摘要: 针对由于传动轴表面品质不高或者存在毛刺造成的图像噪声问题，提出了一种改进的基于像素邻域的多次迭代滤波求亚像素边缘的方法，阐述了该算法的原理和实现方法。该方法应用于齿轮轴径的测量试验中，能够将测量相对误差控制在0.2%以内，定位精度高于未改进算法的定位精度。结果表明，该算法能够在噪声图像中检测到更平滑和连贯的边缘，从而获得准确的亚像素边缘坐标。
- 亚像素边缘检测 /
- 迭代滤波 /
- 传动轴
Abstract: Aiming at the problem of image noise due to the low surface quality of the workpiece or the presence of burr, an improved method of sub-pixel edge detection based on the neighborhood of the pixel using multiple iterative filtering methods is proposed. The principle and implementation method of this algorithm are described. The method is applied to the measurement of diameter of the gear shaft, and it is found that the relative error of measurement can be controlled within 0.2%, and the positioning accuracy is higher than that of the unimproved algorithm. The experiment proves that the algorithm can give out more smooth and coherent edges from the noise image, thus obtaining accurate sub-pixel edge coordinates.
- sub-pixel edge detection /
- iterative filtering /
- transmission shaft

[1]	高敏杰,卜雄洙,孙斌,等.荧光磁粉表面缺陷检测系统[J].无损检测,2017,39(2):67-70.
[2]	王正成,卜雄洙,韩伟,等.轴表面荧光磁粉检测缺陷图像的快速展开拼接[J].无损检测,2018, 40(1):1-5.
[3]	孙秋成,孙维健,徐中宇,等. 基于反正切函数拟合的亚像素边缘检测方法[J].控制工程, 2017,24(4):905-908.
[4]	范清兰,张云峰,包芳勋,等.基于NSCT的区域自适应图像插值算法[J].计算机研究与发展,2018, 55(3):629-642.
[5]	GHOSAL S, MEHROTRA R. Orthogonal moment operators for sub-pixel edge detection[J]. Pattern Recognition, 1993, 26(2):295-306.
[6]	陈静,尚雅层,田军委.快速多项式拟合亚像素边缘检测算法的研究[J].应用光学,2011, 32(1):91-95.
[7]	HERMOSILLA T, BERMEJO E, BALAGUER A, et al. Non-linear fourth-order image interpolation for sub-pixel edge detection and localization[J]. Image & Vision Computing, 2008, 26(9):1240-1248.
[8]	TRUJILLO-PINO A, KRISSIAN K, ALEMAN-FLORES M, et al. Accurate sub-pixel edge location based on partial area effect[J]. Image & Vision Computing, 2013, 31(1):72-90.
[9]	梁光明,孙即祥,马琦,等.Otsu算法在Canny算子中的应用[J].国防科技大学学报,2003, 25(5):36-39.