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Assessing Gloss of Tooth using Digital Imaging

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The aim of this study was to assess gloss of tooth by digital photography. A gonio-imaging system (gonio - being Greek for angle) was developed to measure the gloss of human teeth in a laboratorial stage. Polarised and non-polarised images were acquired around the specular angle. The gloss component was extracted and normalised to a theoretical standard; a BRDF curve was built to describe the gloss profile of the subject. Porcelain teeth were used to test the repeatability of the system and several human lateral teeth were etched to check the system's capability to detect gloss changes. In addition to the BRDF, the area under the curve was calculated to give a quantitative value of gloss. The comparison result between the original and etched teeth can prove the validation of the gonio-imaging system for measuring tooth-gloss changes.
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Document Type: Research Article

Publication date: January 1, 2008

More about this publication?
  • Started in 2002 and merged with the Color and Imaging Conference (CIC) in 2014, CGIV covered a wide range of topics related to colour and visual information, including color science, computational color, color in computer graphics, color reproduction, volor vision/psychophysics, color image quality, color image processing, and multispectral color science. Drawing papers from researchers, scientists, and engineers worldwide, DGIV offered attendees a unique experience to share with colleagues in industry and academic, and on national and international standards committees. Held every year in Europe, DGIV papers were more academic in their focus and had high student participation rates.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual papers for details.

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