Comparing some algorithms about binarization in common use, binarization based on band-elimination filter and potential difference binarization are provided, which greatly improved the retentivity of fingerprint characteristic and fingerprint binarization buildup algorithm.
研究了目前常用二值化算法的优缺点，提出了基于带阻滤波的指纹图像二值化处理方法和指纹图像相位差分二值化处理方法，大大的提高了二值化对指纹特征的保持度，以及二值后处理方法——二值指纹图像方向图增强算法。
参考来源 - 自动指纹识别算法研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Band-pass filter often used in anti-jamming devices, in order to receive a valid signal within the band, while the elimination of high frequency and low frequency interference and noise.
带通滤波器经常用于抗干扰设备中，以便接收某一频带范围内的有效信号，而消除高频段和低频段的干扰和噪声。
An L-shaped band elimination filter on the T-shaped joint part is also used for restricting the resonance of the frequency multiplication of the first resonance frequency.
位于T形接合部上的L形带阻滤波器亦用来抑制第一谐振频率的倍频的谐振。
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