Lip Feature Extraction for Facial Image Quality Assessment

초록

This paper proposes a robust method for analyzing color facial images to extract four lip features, namely, mouth corners and the centers of inner upper/lower lips, upon a condition that the positions of two eye centers are provided in advance. Four lip features are located by taking the characteristic of lip color and edge information into account. The strong relation between positions of eyes and mouth is utilized to restrict the area where the lip features are observed. An experimental validation has been conducted on 300 images collected from the FERET database and has demonstrated the accuracy and robustness of the proposed method.