摘要： 针对图像光照的变化对静态头部姿态估计的影响，该文提出一种基于有向梯度直方图和主成分分析的姿态特征，并利用SVM分类器进行分类。该算法分别在CMU姿态、光照、表情数据库和CVL人脸图像库上进行了测试。实验表明，即使图像光照变化很大，该算法仍可准确地估计头部姿态，识别率达到90％以上。

关键词: 姿态估计, 有向梯度直方图, 光照

Abstract: To solve head pose estimation problem under different illumination and expression, a new pose feature is proposed, which is based on Histogram of Oriented Gradient(HOG) feature and Principle Component Analysis(PCA), and SVM classifier is used to classify different poses. The algorithm is tested based on CMU pose, illumination and expression database and CVL database. Experiment shows that the algorithm can estimate poses accurately under different illumination, and correct ratio arrives at 90%.

Key words: pose estimation, Histogram of Oriented Gradient(HOG), illumination

中图分类号: 

• TP319