Cosmetic Gloss Measurement Ver3

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<ul><li> 1. In Vivo Quantitative Evaluation of Gloss . -- DIY </li></ul> <p> 2. Abstract </p> <ul><li>Key words gloss, shine, skin, hair, light, scattering, polarization, imaging </li></ul> <p>Differentiates componentsof scattered lightUse real timepolarization analysistechnique Enablesin vivo quantitative evaluationof gloss from hair &amp; skin Quality control &amp; claims substantiation 3. Introduction </p> <ul><li>In vivo non-contact testing provides the most meaningful results . </li></ul> <p>Cosmetic manufacturers need.. Quantifyvisual appearance of products Improveperformance, quality &amp; reproducibility SubstantiateclaimsAccurately tostudyskin and hair 4. Color and Gloss </p> <ul><li>Scattered light can be divided into three categories </li></ul> <p>Surface scatteritng Volume scattering Mirror-like reflectedlight (specular reflection) ( ) 5. Degrees of Gloss 0(low gloss)~ (high gloss) specular light volume-scattered light Gd* 0% ( low gloss ) ~ 100% ( high gloss ) specular light/ total reflected light(%) Gd Ranging D efiniti on 6. Operating Principle Light scattered exhibitsvarious polarizationsignatures Based ondifferentiatingand measuring the typesof scattering events. Using apolarimetric camerawith a high polarizationcontrast parameter value at a fast video rate Measurespecular light, surface-scattered light, andvolume-scattered light Processedand combined to provide accurate andconsistent gloss valuesGdandGd* 7. Experimentation Polarimetric Camera Polarized Illumination Image acquisition &amp; processing 8. Result </p> <ul><li>In vivo gloss measurement of foundatio n s </li></ul> <p> 9. Result </p> <ul><li>Ef ficiency testing of hair product </li></ul> <p> 10. Result </p> <ul><li>Gloss distribution </li></ul> <p> 11. Advantages to Gloss Measurement New Technique Independent of texture and shape Correlatedto human eye assessment Highaccuracy&amp; Highconsistency Limitation isrepositioning of the object. 12. Conclusion </p> <ul><li>The described imaging technique opens </li></ul> <ul><li>Possibility of measuring objectively the gloss of textured, complex 3D objects. </li></ul> <ul><li>Well adaptedfor the cosmetic industry to formulate, evaluate products and substantiate claims. </li></ul> <p> 13. References </p> <ul><li>1. S Breugnot, L Le Hors, D Dolfi and P Hartemann,Phenomenological </li></ul> <ul><li>ModelofPaintsforMultispectralPolarimetricImaging,Orlando: Aerosense </li></ul> <ul><li>(2001) </li></ul> <ul><li>2. HC Van De Hulst,Light Scattering by Small Particles,New York: Dover </li></ul> <ul><li>(1981) </li></ul> <ul><li>3.The Munsell Book of Color,Baltimore, MD: Munsell Color Company </li></ul> <ul><li>(1976) </li></ul> <ul><li>4. E Collett,Polarized Light,New York: M Dekker, Inc (1993) </li></ul> <ul><li>5.M Rowe, EN Pugh Jr, JS Tyo and N Engheta, Polarization difference </li></ul> <ul><li>imaging: A biologically inspired technique for observation through </li></ul> <ul><li>scattering media,Optics Letters20(6), 608-610 (Mar 15, 1995) </li></ul> <ul><li>6. S Breugnot and P Cl menceau, Modeling of a polarization active imager </li></ul> <ul><li>at y-806 nm,Optical Engineering39(10) 2677-2680 (Oct 2000) </li></ul> <ul><li>7. R McMullen, J Jachowicz, Optical properties of hair: Effect of treatments </li></ul> <ul><li>on luster as quantified byimage analysis,J CosmetSci54335-351 (July/ </li></ul> <ul><li>Aug 2003) </li></ul> <ul><li>8. R Korichi, Video imaging in the measurement of makeup</li></ul> <ul><li>efficacy and performance,Cosmet Toil117(10) 39-48 (2002) </li></ul>