Novel skin detection method based on correlation rules that evaluate the combinations of chrominance values to identify the skin pixels in the YCb and YCr subspaces Definition of a fitting model of skin-candidate pixels for the generation of image-specific trapezia in the YCb and YCr subspaces Comparisons with six well-known rule-based methods in literature show that the proposed method outperforms the others in terms of F-measure, Dprs and Precision