An automatic facial feature extraction method is presented in this paper. The method is based on the edge density distribution of the image. In the preprocessing stage a face is approximated to an ellipse, and genetic algorithm is applied

这是不均匀光照文本图像的二值化，对研究生和科研人员有重要的参考价值！-This uneven lighting text image binarization, graduate students and researchers have an important reference value!