Abstract: A real-time slice fingerprint image synthesis is put forward and the characteristics of slice fingerprint image and the synthesis are analyzed.A two-step correlation based on gray value is adopted to accelerate the synthesis speed according to the characteristics of DSP and the parameters involved are also optimized.The experiment result on the DSP platform shows the practical feasibility and some problems are discussed in detail.

摘要： 为实现实时的条形指纹图像拼接，首先分析了条形指纹图像的特点和拼接过程，在基于灰度值的两步相关方法的基础上，根据DSP的特点加速了相关运算，并针对指纹图像的特点和拼接过程优化了算法的参数。基于DSP的拼接实验结果和运算量分析表明该方法的实用性，也对实现中的问题作了讨论。