Browse > Article
http://dx.doi.org/10.5391/JKIIS.2009.19.6.743

Polaroid Film Defect Detection Using 2D - Continuous Wavelet Transform  

Jung, Chang-Do (경북대학교 수학과)
Kim, Se-Yun (경북대학교 전자전기컴퓨터학부)
Joo, Young-Bok (연세대학교 컴퓨터과학과)
Yun, Byoung-Ju (경북대학교 전자전기컴퓨터학부)
Choi, Byung-Jae (대구대학교 전자공학부)
Park, Kil-Houm (경북대학교 전자전기컴퓨터학부)
Publication Information
Journal of the Korean Institute of Intelligent Systems / v.19, no.6, 2009 , pp. 743-748 More about this Journal
Abstract
In this paper, we propose an effective method to extract background components in automated vision inspection system for polarized film used in TFT LCD display panels. The test image signals are typically composed of three components such as ununiform background, random noises and target defect signals. It is important to analyze the background signal for accurate extraction of defect components. Two dimensional continuous wavelets with first derivative gaussian is used. This methods can be applied for reliable extraction of defect signal by elimination of the background signal from the original image. The proposed method outperforms over conventional FFT methods.
Keywords
Continuous wavelet transform; Computer vision; Polaroid film;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Kyung-shik Jang, 'Defect Inspection of the Polarizer Film Using Statistical Texture Analysis', 情報通信硏究所, 情報通信硏究誌 第7輯 2006. 2. pp. 113-117
2 Katkovnik, V., 'Discrete-time local polynomial approximation of the instantaneous frequency', Signal Processing, IEEE Trans. On, vol. 46, Issue 10, pp. 2626-2637, 1998   DOI   ScienceOn
3 S. Mallat, 'A theory for multiresolution signal decomposition: the wavelet representation', IEEE Transaction on Pattern Analysis and Machine Intelligence 11 (1989) 674–693
4 J. Antoine, R. Murenzi, P. Vandergheynst, S. Ali, Two-Dimensional Wavelets and their Relatives, Cambridge University Press, Cambridge, 2004
5 B.TORRESSANI, Analyse Continue par Ondelettes, Ed. SAVOIR ACTUELS, Edition ICNRS Editions, 1995, pp 26-28
6 J. Antoine, D. Barache, R. Cesar, L. Fontoura Costa, Signal Process. 62 (1997) 265   DOI   ScienceOn
7 Unser, M., Daubechies, I., 'On the approximation power of convolution-based least squares versus interpolation', Signal Processing, IEEE Trans. On, vol. 45, Issue 7, pp.1697-1711, 1997   DOI   ScienceOn
8 S.DUMONT. Ondelettes Homogeneization Periodiq-ue et Elastisit$\, Th$\`{e}$se, Montpellier Il, 1996