Abstract: According to the feature of human head，this paper puts forward a method for recognizing human head based on the feature of contour.The method to clear burr of contour in threshold image，whose purpose is to prevent endless loop，is described in detail.One method to extract the contour is put forward，and the detailed steps are given out，too.Primary human head screening is carried on with the size of the area.Then the circularity is used to recognize human head.This method is not only real-time，but also needs less memory.At the end，experiment proves the good effect of the method.

摘要： 根据人头的特征，提出了基于区域轮廓特征的人头识别方法。详细描述了对预处理后的二值化图像进行去轮廓毛刺的方法，以防止轮廓提取时产生死循环。提出了一种提取区域轮廓的方法，并给出了其详细步骤。利用轮廓所包围区域的面积对人头进行初步筛查，然后利用圆形度进行人头识别。该方法实时性好，而且所需内存空间小。最后，用实验证明了这种方法的良好效果。