Effect analysis of fingerprint image preprocessing
指纹图像预处理效果分析

The pretreatment of digital fingerprint is a key of the entire identification process, comprehensively analyzing the characteristic of every kind pretreatment method is helpful to improve the prctreatment algorithm. Through the experimental result of the various methods of pretreatment, the effects were illuminated; appraisal of every kind pretreatment method was given; the optimal scheme of enhanced fingerprints based on the Fourier transform and direction information was determined, and the standard of the comparing pretreatment algorithm was proposed.