本程序通过水平和垂直灰度投影，框选出灰度面部图像中的眼睛区域。-This program is used to locate eye region in gray facial image by means of horizontal and vertical projection.

Horizontal rank filtering image

matlab的。阈值分割二值化后实现灰度图像直方图分析。垂直和水平的灰度投影显示在图表中。-matlab. achieve gray image histogram analysis after thresholding binarization. The vertical and horizontal gray projection displayed in a graph.