中文摘要：

行人检测系统（PDS）作为保障汽车、行人安全的一种主动安全手段，已成为产业界和研究界共同关注的一个研究热点．特别是近5年来，随着传感器、核心算法等的不断进步和使用，PDS研究发展很快．不同于已有的针对PDS早期工作的综述，本文从技术进展、原型系统进展两个方面重点总结了PDS近5年来的最新研究进展，指出了目前尚未解决的问题，并对PDS研究涉及的关键技术的发展做出展望．

英文摘要：

Pedestrian detection system （PDS） is an active safety technique which guarantees pedestrians and vehicles safety. It has become a hot research topic and made good progresse in the latest 5 years with the development and application of sensor technologies,kernel algorithms and so on.Different with other PDS survey papers,this paper surveys the major works in this field during the last five years from the aspects of techniques and prototype systems; some problems are pointed out and analyzed to be solved. The expectation of the future work is given at the end.