• ridge frequency - 引用次数：7

  A method for ridge orientation acquirement is improved, and the orientation map is more accurate. A method for ridge frequency acquirement is improved, and the false ridge lines are avoided.

  首先对纹线方向提取方法进行了改进，获得了较准确的方向图；然后对纹线频率的提取方法进行了改进，有效地避免了Gabor滤波后在脊线中留下伪纹线和小孔的问题。

  参考来源 - 指纹识别算法研究

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