采用协 同和带压缩因子的粒子群改进算法求解Ot su 阈值, 通过分别用改进粒子群算法和标准粒子群算法对lena 测试图像 的实验表明, 前者相较于后者有更高的精度-With the use of synergies and improved compression factor of the particle swarm algorithm Ot su threshold, respectively, by using the improved PSO and PSO standard