To deal with the uncertainty in the matching procedure, we design a fuzzy similarity measure ( FSM ) which computes the possibility function, and decides the correspondence based on it.

• 由于模糊相似性测度合理描述并处理了匹配过程中的不确定性因素，兼顾了 特征的局部属性与全局属性，从而大大增加了正确匹配的特征数目并提高了算法的 鲁棒性。