1) oriented-filtering
方向图滤波
1.
In order to enhance and recognize the rings in the original target image, a proper oriented-filtering mask is designed, which is based on the features of the image of the target sheet.
文中分析了影响判靶精度的各种因素 ,提出了一种具有较高判靶精度的新方法 ,即根据靶纸图像的特征 ,设计了一种合适的方向图滤波算法 ,对原始靶纸图像中的靶环线进行滤波增强 ,进而识别出各个靶环线 ,再根据弹孔与环线的相对位置计算环值 (射击成绩 ) ,得到了比较好的效果 。
2) directional filtering
方向滤波
1.
Finally the fiber density of the fiber pattern is obtained by using the two dimensional FFT and the directional filtering.
采用高精度摄象机和小型手持扫描仪采样，经数字图象处理增强图象的有效信息量，再运用二维ＦＦＴ及方向滤波，较准确和及时地获取准确的纺织品纤维密度。
2.
This paper presents a ship detection method combining wavelet analysis and directional filtering for cloudy remote sensing images.
提出了小波分析和方向滤波相结合的有云遥感图像目标检测方法。
3.
This paper introduces image processing technology into it,and information of the edge is obtained through directional filtering,adaptive filtering and automatic entropic threshold region-based partition,and extract feature of the image,finally,use k-nearest neighbor algorithm to confirm the level of hydrophobic.
把数字图像处理技术引入到合成绝缘子的憎水性检测中,通过对绝缘子表面喷水图像的方向滤波、自适应滤波和基于熵的自动阈值区域分割来获取喷水图像中的水滴边界信息,并完成图像的特征提取,最后用k-近邻法判定绝缘子的憎水性等级。
3) orientation filter
方向滤波
1.
Effective fingerprint image orientation filter enhancement algorithm;
一种有效的指纹图像方向滤波增强算法
2.
Fingerprint image enhancement algorithm based on the fuzzy set and the orientation filter;
基于模糊集和方向滤波的指纹图像增强算法
3.
A set of orientation filters are constructed to filter the fingerprint images.
在自动识别系统中,为了消除噪声以提高指纹图象的质量,采用梯度法计算指纹图像的方向图,通过构造一组方向滤波器对指纹图像进行滤波,然后提出了一种针对方向滤波后的指纹图像消除噪声的方法,试验结果表明了该方法的有效性和实用性。
4) oriented filter
方向滤波
1.
According to the characteristics of fingerprints,the proposed algorithm also designs a group of oriented filters,and then manipulates them to filter the image depending on the orientation of the.
在指纹滤波增强方法的基础上,提出一种基于方向滤波器的指纹图像增强算法。
2.
Analysis of a large number of fingerprint samples suggests that the mask size of the oriented filter should be changed in real time with fingerprint frequency variations.
在大量样本分析的基础上 ,根据指纹纹理频率参数的变化动态调整方向滤波模板的大小对指纹图像进行有效的增强处理 ,对不同的纹理方向专门采用了查表的方法 ,减小了时间消耗。
5) direction filter
方向滤波
1.
Because the texel of periodic texture is the patch with the texture s period,here try to calculate the period by direction filter,and then synthesize the periodic texture by sampling with the period.
由于周期性纹理的纹元是以周期为单位的纹理块,该文试图对周期性纹理图像进行方向滤波后找出纹理的周期,然后以周期尺度为采样块的大小和采样间距,进行纹理合成。
6) direction filtering
方向滤波
1.
This paper presents a method that can remove streaking noise better by means of direction filtering based on two dimension Fourier transform.
利用二维傅里叶变换进行方向滤波，较好地消除了南极地区影像上的条带噪声。
2.
Introduced the whole process of the direction filtering method processing images,which is based on the analysis and comparison of present pre-processing algorithm for fingerprint image,and presented the mathematical model describing the fingerprints as well.
首先在对现有指纹图像预处理算法进行分析比较的基础上,系统介绍了方向滤波法对图像的处理过程,同时给出了指纹的数学模型。
补充资料：图的减缩图(或称图子式)
图的减缩图(或称图子式)
minor of a graph
图的减缩图(或称图子式)【.皿以ofa脚户;MHHoPrpa中a」【补注】设G是一个图(graph)(可以有环及多重边).G的一个减缩图(nullor)是从G中接连进行下述运算而得的任何一个图: i)删去一条边; 五)收缩一条边; 说)去掉一个孤立顶点. NRobe由on与P.D.Se脚aour的图减缩定理(脚Ph nl的。r theon习11)如下所述:已知有限图的无穷序列G，，GZ，…，则存在指标i
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