26 March 2007 Digital image assessment of metallic post morphological detection through trans-illumination of composite material
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Proceedings Volume 6425, Lasers in Dentistry XIII; 642506 (2007); doi: 10.1117/12.701174
Event: SPIE BiOS, 2007, San Jose, California, United States
Abstract
In this work a technique was proposed and evaluated for detection of metallic posts of parallel sides through a test body of Z100 dental resin. The technique presented involves the acquisition and the image processing by trans-illumination of the resin to detect the edges of the posts. LASER and LED systems in different colors were used as a source of irradiation for the image formation. The qualitative analysis of the results showed that just by using LED in the red and green colors it was possible to detect the edges of the posts. The results also showed that the use of LASER in this experiment was not successful mainly due to the LASER light optical interference phenomenon inside the resin, which resulted in low definition images. Lastly the discussion of the work was directed to the optical effects of absorption and scattering of light throughout the resin, light diffraction through the posts and interference of the coherent light evaluating the influence of each effect in the experiment.
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Emery C. Lins, Fernando L. E. Florez, Augusto C. R. Figueiredo, Vanderlei S. Bagnato, "Digital image assessment of metallic post morphological detection through trans-illumination of composite material", Proc. SPIE 6425, Lasers in Dentistry XIII, 642506 (26 March 2007); doi: 10.1117/12.701174; https://doi.org/10.1117/12.701174
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KEYWORDS
Light scattering

Image processing

Light emitting diodes

Scattering

Edge detection

Light sources

Composites

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