基于变结构元与参数映射的石英摆片参数测量
Keywords: 石英摆片 Zernike矩 参数映射 变结构元 亚像素边缘定位
Abstract:
为了满足诸如民用领域和国防技术领域中对挠性器件石英摆片参数高精度测量的要求,提出一种利用视觉图像对石英摆片参数进行高精度测量的非接触方法.该方法通过视觉测量系统对石英摆片图像进行摄取,利用变结构元广义形态学边缘检测算法进行初始边缘定位,充分提取图像边缘细节信息的同时抑制图像噪声的影响.在亚像素图像处理中,提出了对圆形曲线进行亚像素边缘定位的边缘检测算法,建立了曲线边缘点与边缘参数之间的映射关系.利用检测出的曲线边缘点数据,通过定义一个新的误差函数并最小化,可以计算出石英摆片参数.实验结果表明,该方法稳定性好且实时性强,定位不确定度优于0.03像素,可实现石英摆片参数的精密测量.
| [1] | 1. NOBEL J A Form inspection to process understanding and monitoring:a view on computer vision in manufacturing 1995(13)
|
| [2] | 2. GUERRA E.VILLALOBOS J R A three-dimensional automated visual inspection system for STM assembly 2001(40)
|
| [3] | 3. DWORKIN S B.NYE T J Image processing for machine vision measurement of hot formed parts 2006(174)
|
| [4] | 4. HEATH M.SUDEEP S.THOMAS S Comparison of edge detectors:a methodology and initial study 1998(1)
|
| [5] | 5. CHEN T.WU Q H.RAHMANI T A pseudo top-hat mathematical morphological approach to edge detection in dark regions 2002(35)
|
| [6] | 6. TRUCHETET F.LALIGANT O Subpixel edge detection for dimensional control by artificial vision 2001(1)
|
| [7] | 7. LYVERS P.MITHELL R.AKEY L Subpixel measurements using a moment-based edge operator 1989(12)
|
| [8] | 8. GHOSAL S.MEHROTEA R Orthogonal moment operators for subpixel edge detection 1993(2)
|
| [9] | 9. DAVIES E R A modified hough scheme for general circle location 1987
|
| [10] | 10. PEI S C.CHENG C M Color image processing by using binary quaternion-moment-preserving thresholding technique 1999(5)
|
Full-Text
