1. A method of skin segmentation of a digital image, said method operable in an image acquisition device, comprising: acquiring an image, including focusing an object through a lens onto an image sensor of an image acquisition device; using a processor to determine a face skin pixel redness value indicative of a redness of a pixel of said image and to identify said pixel as a face skin pixel if a criterion is satisfied, and wherein said image is in RGB colour space, and wherein said value comprises the R value of said pixel, and wherein said criterion comprises R>G+K and R>B+K, where K is proportional to a pixel saturation value of the pixel.