Then dividing background block and foreground block and binarying image.The purpose of thinning image is to reduce a lot of inessential information and to get very integrated minutiae information.

 
  • 然后,分割背景和前景塊,二值化、細化并去除噪聲,消去大量的指紋冗于信息,得到較完整的細節特征信息。
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