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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 25 — Dec. 5, 2011
  • pp: 25712–25722

Measurement of transient deformation by color encoding

C. Mares, B. Barrientos, and A. Blanco  »View Author Affiliations

Optics Express, Vol. 19, Issue 25, pp. 25712-25722 (2011)

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We present a method based on color encoding for measurement of transient 3D deformation in diffuse objects. The object is illuminated by structured light that consists of a fringe pattern with cyan fringes embedded in a white background. Color images are registered and information on each color channel is then separated. Surface features appear on the blue channel while fringes on the red channel. The in-plane components of displacement are calculated via digital correlation of the texture images. Likewise, the resulting fringes serve for the measuring of the out-of-plane component. As crossing of information between signals is avoided, the accuracy of the method is high. This is confirmed by a series of displacement measurements of an aluminum plate.

© 2011 OSA

OCIS Codes
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(120.3940) Instrumentation, measurement, and metrology : Metrology
(120.4290) Instrumentation, measurement, and metrology : Nondestructive testing

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: September 19, 2011
Revised Manuscript: November 7, 2011
Manuscript Accepted: November 21, 2011
Published: December 1, 2011

C. Mares, B. Barrientos, and A. Blanco, "Measurement of transient deformation by color encoding," Opt. Express 19, 25712-25722 (2011)

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