1) ridge frequency
纹线频率
1.
A method for ridge frequency acquirement isimproved, and the false ridge lines and wounds after Gabor filter are avoided.
并改进了纹线频率的提取方法,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。
2.
A method for ridge orientation acquirement is improved and a new method for ridge frequency acquirement is brought out.
研究了基于加博(Gabor)函数的指纹增强算法,对纹线方向提取算法进行了改进,提出了一种纹线频率提取方法,给出了加博函数用于指纹增强的具体应用形式,以指纹图像的纹线方向和纹线频率为参数,使用加博函数实现了对指纹图像的增强处理,并使用南京大学活体指纹库中的部分典型低质量图像样本对算法性能进行了测试。
3.
The paper is based on Gabor filter frequency selection and direction selectivity, detailing the fingerprint ridge direction information and ridge frequency information is calculated using these two parameters to design Gabor filter to enhance fingerprint images and obtain a good effect.
本文依据Gabor滤波器的频率选择和方向选择特性,详细介绍了指纹纹线方向信息和纹线频率信息的计算方法,利用这两个参数设计出Gabor滤波器对指纹图像进行增强,并取得了良好的效果。
2) The frequency of the ridge pattern
纹型频率
3) ripple frequency
波纹频率
4) ripple frequency
纹波频率
5) fringe frequencies
条纹频率
1.
The fringe frequencies and fringe gradient orientation of the speckle fringe pattern are obtained by windowed Fourier operation.
通过加窗傅里叶运算提取散斑条纹图的条纹频率和条纹梯度方向,并利用它们确定具有频率和方向选择性的Gabor滤波器对散斑条纹图进行Gabor滤波。
6) frequency dactylogram
频率指纹
1.
Damage orientation detection of composite lamination using variation of frequency dactylogram
利用频率指纹检测复合材料层合结构的脱层损伤
补充资料：频率计量(见时间频率计量)
频率计量(见时间频率计量)
frequency metrology: see time and frequency metrology
口n IQ liliang顷率频率计皿(f比quency metrolo盯) 计t。见时闰
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条