Color Space for Skin Detection – A Review
Nikhil Rasiwasia
Fondazione Graphitech, University of Trento, (TN) Italy

  • The skin colors form a separate cluster in the RGB color space. Hence skin color can be used as a cue for skin detection in images and videos.
  • The performance of different color space may be dependent on the method used to model the color for skin pixel.
  • For the common methods – Look up table, bayes classifier, gaussian the results are
    • Look up table – HS performs the best followed by normalized RGB
    • Bayes – is not largely affected by the the color space
    • Gaussian – No general result can be derived from the papers under consideration
  • Removing the illumination component does increase the overlap between skin and non skin pixels but a generalization of training data is obtained

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