手势是一种自然而直观的人际交流模式. 基于视觉的手势识别是实现新一代人机交互所不可缺少的一

项关键技术. 然而,由于手势本身具有的多样性、多义性、以及时间和空间上的差异性等特点,加之人手是复杂变形体

及视觉本身的不适定性,因此基于视觉的手势识别是一个极富挑战性的多学科交叉研究课题. 本文从手势建模、手势

分析和手势识别等三个方面综述了基于视觉手势识别的研究现状及其应用.-　Hand gestures play a natural and intuitive communication mode for all human dialogs. The ability for computer to vi2

sually recognize hand gestures is essential for future human2computer interaction. However ,vision2based recognition of hand gestures is

an extremely challenging interdisciplinary project due to following three reasons :(1) hand gestures are rich in diversities ,multi2mean2

ings ,and space2time varieties　 (2) human hands are complex non2rigid objects　 (3) computer vision itself is an ill2posed problem. This

paper presents a survey on visual recognition of hand gestures from points of modeling ,analysis and recognition techniques of vision2

based hand gestures recognition.