摘要
针对以梯度方向直方图作为人体特征的行人检测存在向量维数较大、检测时间较长的问题,提出基于感兴趣区梯度方向直方图的行人检测方法,分别在头部及四肢等重点区域计算梯度方向直方图,有效地减少了向量维数。实验结果表明,该方法在检测率基本不变的情况下提高了检测速度。
The drawbacks of pedestrian detection method based on Histograms of Oriented Gradient(HOG) are larger dimensions of features and slow detection speed.Aiming at this point,a method based on HOG of Region Of Interest(ROI) is proposed.HOG is calculated in four important regions which locate in head and limbs’ regions respectively.Through this method,dimensions of features are decreased effectively.Experimental results show this method speeds up detection process while maintaining comparably accuracy to the method based on HOG.
出处
《计算机工程》
CAS
CSCD
北大核心
2009年第24期182-184,共3页
Computer Engineering
关键词
行人检测
梯度方向直方图
感兴趣区
支持向量机
pedestrian detection
Histograms of Oriented Gradient(HOG)
Region Of Interest(ROI)
Support Vector Machine(SVM)
作者简介
曾春(1977-),男,硕士研究生,主研方向:模式识别,行人检测; E-mail:lxhw@scu.edu.cn
李晓华,副教授、博士;
周激流,教授、博士生导师