Abstract— Human computer interface (HCI) system requires
a skin color detection algorithm in it’s first step of designing.
Skin color detection algorithm faces two major problems one
is variable Human skin tone and second one is complex
background. Human skin tone variation can be easily seen
from person to person within same ethnic group or different
ethnic groups. And the background used in real time is
usually complex with variable lightening conditions. Hence
a good skin color detection algorithm is required to work well
under these conditions. In this paper a skin color detection
algorithm using skin color map is proposed which gives
promising results in complex background. Color space used
here is YCbCr color space and skin color model used is
explicitly defined regions. This model has certain advantages
over parametric and non parametric models in terms of
implementation and memory usage and color space chosen is
good for video processing applications.