Color segmentation

摘要

A method of skin segmentation of a digital image is operable in an acquisition device. An image is acquired. A value indicative of a redness of a pixel of said image is compared with a face skin pixel redness criterion. The pixel is identified as a face skin pixel if said criterion is satisfied.

主权项

1. A method of a skin segmentation of a digital image, said method performed by an image acquisition device, comprising:
acquiring an image using a lens and an image sensor of an image acquisition device; determining, using a processor, a face skin pixel redness value indicative of a redness of a pixel of said image, and identifying said pixel as a face skin pixel if said pixel of said image satisfies a criterion; wherein said pixel of said image is represented in a YCC colour space; wherein said face skin pixel redness value is a Cr value of said pixel represented in the YCC colour space; wherein said pixel of said image satisfies said criterion if: Cr>k1−k2*Cb, and Cr>k3*Cb−k4, wherein k1, k2, k3, and k4 comprise constants.