cosmetic gloss measurement ver3

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  • 1. In Vivo Quantitative Evaluation of Gloss . -- DIY

2. Abstract

  • Key words gloss, shine, skin, hair, light, scattering, polarization, imaging

Differentiates componentsof scattered lightUse real timepolarization analysistechnique Enablesin vivo quantitative evaluationof gloss from hair & skin Quality control & claims substantiation 3. Introduction

  • In vivo non-contact testing provides the most meaningful results .

Cosmetic manufacturers need.. Quantifyvisual appearance of products Improveperformance, quality & reproducibility SubstantiateclaimsAccurately tostudyskin and hair 4. Color and Gloss

  • Scattered light can be divided into three categories

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 & processing 8. Result

  • In vivo gloss measurement of foundatio n s

9. Result

  • Ef ficiency testing of hair product

10. Result

  • Gloss distribution

11. Advantages to Gloss Measurement New Technique Independent of texture and shape Correlatedto human eye assessment Highaccuracy& Highconsistency Limitation isrepositioning of the object. 12. Conclusion

  • The described imaging technique opens
  • Possibility of measuring objectively the gloss of textured, complex 3D objects.
  • Well adaptedfor the cosmetic industry to formulate, evaluate products and substantiate claims.

13. References

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