MOIRÉ PATTERNS FROM A CCD CAMERA - Are They Annoying Artifacts or Can They be Useful?

Tong Tu, Wooi-Boon Goh

Abstract

When repetitive high frequency patterns appear in the view of a charge-coupled device (CCD) camera, annoying low frequency Moiré patterns are often observed. This paper demonstrates that such Moiré pattern can useful in measuring surface deformation and displacement. What is required, in our case, is that the surface in question is textured with appropriately aligned black and white line gratings and this surface is imaged using a grey scaled CCD camera. The characteristics of the observed Moiré patterns are described along with a spatial domain model-fitting algorithm that is able to extract a dense camera-to-surface displacement measures. The experimental results discuss the reconstruction of planar incline and curved surfaces using only a coarse 33 lines per inch line grating patterns printed from a 600 dpi printer.

References

  1. Kafri, O., Glatt, I., 1990, The Physics of Moiré Metrology, John Wiley & Sons.
  2. Khan, A. S., Wang X., 2001, Strain Measurements and Stress Analysis, Prentice Hall, New Jersey.
  3. Walker, C.A. (Ed), 2004, Handbook of Moiré Measurement, Institute of Physics Publishing, Bristol.
  4. Creath, K., Schmit, J., Wyant, J.C., 2007, Optical Metrology of Diffuse Surfaces. In Optical Shop Testing, Malacara, D. (Ed.), John Wiley & Sons, Hoboken, New Jersey, 3rd edition, pp. 756-807.
  5. Chang, R. S., Sheu, J.Y., Lin C.H., Liu H.C., 2003, Analysis of CCD Moiré Pattern for Micro-range measurements using the Wavelet Transform. Optics and Laser Technology (35) pp. 43-47.
  6. Amidror, I., 2000, The Theory of the Moiré Phenomenon, Kluwer Academic Publishers, Dordrecht, The Netherlands.
  7. Goh, W. B., 2007, Noise Robust AM-FM Demodulation using Least-Squares Truncated Power Series Approximation. In ICICS'07, 6th Intl. Conf. on Information, Communications and Signal Processing.
  8. Goh, W. B., Chan, K.Y., 1998, Amplitude Modulated Sinusoidal Modeling using Least-square Infinite Series Approximation with Applications to Timbre Analysis. In ICASSP'98, IEEE Intl. Conf. of Acoustics, Speech and Signal Processing, (6), pp. 3561-3564.
  9. Point Grey Research Inc., 2008, Dragonfly Express, http://www.ptgrey.com/products/dx/dx.pdf
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Paper Citation


in Harvard Style

Tu T. and Goh W. (2009). MOIRÉ PATTERNS FROM A CCD CAMERA - Are They Annoying Artifacts or Can They be Useful? . In Proceedings of the Fourth International Conference on Computer Vision Theory and Applications - Volume 1: VISAPP, (VISIGRAPP 2009) ISBN 978-989-8111-69-2, pages 51-58. DOI: 10.5220/0001807700510058


in Bibtex Style

@conference{visapp09,
author={Tong Tu and Wooi-Boon Goh},
title={MOIRÉ PATTERNS FROM A CCD CAMERA - Are They Annoying Artifacts or Can They be Useful? },
booktitle={Proceedings of the Fourth International Conference on Computer Vision Theory and Applications - Volume 1: VISAPP, (VISIGRAPP 2009)},
year={2009},
pages={51-58},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001807700510058},
isbn={978-989-8111-69-2},
}


in EndNote Style

TY - CONF
JO - Proceedings of the Fourth International Conference on Computer Vision Theory and Applications - Volume 1: VISAPP, (VISIGRAPP 2009)
TI - MOIRÉ PATTERNS FROM A CCD CAMERA - Are They Annoying Artifacts or Can They be Useful?
SN - 978-989-8111-69-2
AU - Tu T.
AU - Goh W.
PY - 2009
SP - 51
EP - 58
DO - 10.5220/0001807700510058