제어로봇시스템학회논문지 (Journal of Institute of Control, Robotics and Systems)

  • 제4권3호
  • /
  • Pages.372-377
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  • 1998
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  • 1976-5622(pISSN)
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  • 2233-4335(eISSN)
제어로봇시스템학회 (Institute of Control, Robotics and Systems)
권호 표지

Wavelet frame 변환을 이용한 냉연 시각검사 알고리듬

Visual inspection algorithm of cold rolled strips by wavelet frame transform

  • 이창수 (수원대학교 전기전자정보통신공학부) ;
  • 최종호 (서울대학교 전기공학부, 자동화시스템공동연구소)
  • 발행 : 1998.06.01
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초록

This paper deals with the detection, feature extraction and classification of surface defects in cold rolled strips. Inspection systems are one of the most important fields in factory automation. Defects such as slipmark and dullmark can be effectively detected with a Gaussian matched filter because their shapes are similar to Gaussian. It is justified that the proposed WF(Wavelet Frame) method could be regarded as multiscale Gaussian matched filter which can be applied to the inspection of cold rolled strip. After a wavelet frame transform, the entropies and moments are computed for each subband which pass through both local low pass filter and nonlinear operator. With these features as input, a MLP(Multi Layer Perceptron) is used as a classifier. The proposed inspection method was applied to the real images with defects, and hence showed good performance. The role of each extracted feature is analyzed by KLT(Karhunen-Loeve Transform).

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참고문헌

  1. IEEE Trans. of Pattern Analysis and Machine Interlligence v.10 no.1 An automatic wafer inspection wywtem using pipelined image processing techniques H. Yoda;Y. Ohuchi;Y. Taniguchi;M. Ejiri
  2. IEEE Trans. on Pattern Analysis and Machnie Intelligence Automated x-ray inspection of aluminum castings H. Boerner;H. Strecker
  3. Internat. Conf. on Automation. Rovotics and Computer Vision Automated visual inspection of painted metallic surfaces A. Ercil
  4. Machine Vision for Inspection and Measurement H. Freeman
  5. IRCV v.1193 A machine vision system for real time inspection of moving web J. L. C. Guay
  6. IEEE Trans. on Industrial Electronics v.40 no.2 Web precoee inspection using neural classification of scattering lignt L. J. Olsson;S. Gruber
  7. Proc. Internat. Conf. on Industrial Electronics Control, and Instrumentation(IECON) Vision system for on-line surface inspection in aluminum casting process C. Fernandez;C. Platero;P. Campoy;R. Aracil
  8. IEEE Trans. on System. Man and Cybernetics v.3 no.6 Textual features for image classification R. Haralick;K. Shanmugam;I. Dinstein
  9. Proceeding of the IEEE v.67 no.5 Statistical and structual approaches to textual R. M. Haralick
  10. Proc. Internat. Conf. on Image Processing v.3 Multiscale image texture analysis in wavelet spaces M. H. Gorβ;R. Koch;L .Lippert;A. Dreger
  11. Signal Processing v.11 Local Lineal transform for texture measurements M. Unser
  12. IEEE Trans. on Pattern Analysis and Machine Intelligence v.11 no.7 Multiresolution feature extraction and selection for texture segmentation M. Unser;M. Eden
  13. Proc. Computer Vision and pattern Reognition Texture discrimination using wavelets M. Unser
  14. IEEE Trans. on Image Processing v.4 no.11 Texture classification and segmentation using wavelet frames M. Unser
  15. SLAM J. Math v.15 Decomposition of hardy functions into square integravble wavelets of constant shape A. Grossmann;J. Morlet
  16. Digital Image Processing(Second edition) W. K. Pratt
  17. IEEE Trans. on Medical Imaging v.15 no.2 Wavelet trasforms for detecting microcalcifications in mammograms R. N. Strickland;H. I. Hahn
  18. IEEE Trans. on Information Theory v.37 no.4 Zero-crossings of a wavelet transform S. Mallat
  19. IEICE Trans. on Information and Systems v.E80-d no.5 Surface defect inspection of cold rolled strips with features based on adaptive wavelt packets C. S. Lee;C. H. Choi;J. Y. Choi;S. H. Choi
  20. Digital Image Processing Algorithms I. Pitas
  21. Digital Image Processing R. C. Gonzalez;R. E. Wood
  22. Introduction to Statistical Pattern Recognition Introduction to Statistical Pattern Recognition K. Fukunga