在指纹技术中，指纹图像分割是图像处理中关键的一步。将遗传算法用于计算指纹图像分割阈值，采用染色体编码的方法并利用赌轮法产生初始化种群，通过选择算子、交叉算子和变异算子的方法实现分割。该方法表明利用遗传算法所得到的阈值进行分割处理能取得较好的效果。

Segmentation of fingerprint images is an important step of preprocessing in fingerprint technology. To apply genetic algorithms to calculate the threshold value of the segmentation of fingerprint image is introduced. The chromosome decoding method is used. This method illustrates to produce the initiate population,and ends with an illustration of the implementations of selection operator,crossover operator and mutation operator. It is proved through algorithm implementation that threshold value through genetic algorithms can achieve excellent effect.