Paper Title:
Automatic Image Measurement Technology in Endoscopy NDT
  Abstract

Endoscopy is an important non-destructive testing (NDT) method. It plays an important role in damage assessment and fault detection for aeroengine and structure [1,3]. However, the endoscopy usually relies on the operator’s experience to measure the defects manually in the application. Therefore, the current endoscopy method has some shortcomings that the accuracy and the efficiency of its measurement are low. To solve these problems, an automatic image measurement method based on the cubic spline interpolation is proposed in this paper. Firstly, the endoscopy image pre-processing such as gray processing, filtering, sharpening, segmentation and edge extraction are presented. Then, the pixel points in the processed edge image are handled by cubic spline interpolation and the spline function is got. After the starting point, vertex and endpoint of the defect are determined automatically, the width, depth and distance of defects are worked out. Finally, the method is applied in the fault detection for aeroengine’s blade. The experimental results show that this method can detect the width, depth and distance of the aeroengine’s blade defects exactly and quickly.

  Info
Periodical
Key Engineering Materials (Volumes 413-414)
Edited by
F. Chu, H. Ouyang, V. Silberschmidt, L. Garibaldi, C.Surace, W.M. Ostachowicz and D. Jiang
Pages
803-809
DOI
10.4028/www.scientific.net/KEM.413-414.803
Citation
G. J. Liu, Y. Zhang, J. Qiu, K. H. Lu, "Automatic Image Measurement Technology in Endoscopy NDT", Key Engineering Materials, Vols. 413-414, pp. 803-809, 2009
Online since
June 2009
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Wen Hui Zhao, Zhen Yun Duan, Wen Zhen Zhao, She Liu
Abstract:It is necessary to develop an on-machine measurement system of cutting tools with high precision and high efficiency on the NC machining, so...
2678
Authors: Jing Lian, Lin Hui Li, Xiao Yong Shen, Xian Peng Hao
Abstract:In the field of robot vision, edge feature based stereo matching algorithm can reconstruct the targets with clear contours, which needs...
4162
Authors: Ji Gang Wu, Kuan Fang He, Bin Qin
Abstract:Aiming at the subpixle edge detection of speckle in autofocus for micro-machine vision, a novel accurate subpixel edge detection algorithm...
228
Authors: Xiao Yan Shang, Ji An Wu, Xing Wang, Liu Nan
Chapter 2: Manufacturing Technology
Abstract:non-contact measurement of shaft component realizes dynamic measuring ,which bases on image measurement technology.After the image of shaft...
602
Authors: Shan Shan Gong, Mu Jun Li
Chapter 5: Control and Detection Technology
Abstract:For shape error analysis and correction of micro-structure in lithography, image edges should be extracted from micrographs of the...
1109