对数极坐标,Log-Polar
1)Log-Polar对数极坐标
1.In this paper,we incorporate Fourier transform with Log-Polar transform to achieve rotation invariant texture analysis.通过将对数极坐标和傅立叶变换结合,完成旋转不变的傅立叶纹理特征提取。
2.This method can graph-display the measure result utilized the characteristic of the Log-Polar which is non-linear division and can display the impedance model and impedance angle at the same time.该方法通过对三相电压和三相电流的波形采样计算出三相阻抗,并利用对数极坐标的非线性分度和能够同时显示阻抗模和阻抗角的特点来进行图示显示。
英文短句/例句

1.A New Algorithm for Target Recognition Based on Log-Polar Transform基于对数极坐标变换的目标识别算法
2.Mutual information image registration based on log-polar transform对数极坐标变换域下互信息图像配准方法
3.Robust feature extraction arithmetic based on parametrical log-polar transformation for texture image细化参数的对数极坐标变换图像纹理特征提取算法
4.In this paper, we incorporate Fourier transform with Log-Polar transform to achieve rotation invariant texture analysis.通过将对数极坐标和傅立叶变换结合,完成旋转不变的傅立叶纹理特征提取。
5.Establishment of Relative Polar Coordinate Method of Lofting Mineral Company Shandong Branch of CHALCO建立相对坐标系的极坐标法施工放样
6.logit/log graph对数值 对数坐标图
7.logit/log method对数值 对数坐标法
8.revolution of polar to Cartesian极坐标-直角坐标旋转
9.resolution of polar to cartesian极坐标-直角坐标转换
10.The Application of spherical coordinates in the Limit of Function of Many Variables;球面坐标在求多元函数极限中的应用
11.Response of PFA to Moving Target in SAR ImagingSAR极坐标格式成像算法对运动目标响应特性
12.The Research on the NC Programming Technology and the Implementation of the CAM System Based on Polar-coordinate;极坐标数控编程技术研究与CAM系统的实现
13.The application of polar coordinates systemin the CNC LATHE-MILLING;极坐标系在数控车铣加工中心上的应用
14.Viewing the Importance of Parametric Equation and Polar Coordinates Form Computer Polting;从计算机作图看参数方程极坐标的重要性
15.An Improved CSAR 3-D Imaging Algorithm in Polar Wavenumber Domain一种改进的极坐标波数域圆迹SAR三维成像算法
16.CNC Grinding Method of Formed Turning Cutter for Rollers by Using Floating Polar Coordinate轧辊成形车刀的浮动极坐标数控刃磨方法
17.Grid Technology of Doppler Radar Data Based on Polar Coordinates Projection基于极坐标投影的多谱勒雷达数据栅格化技术
18.semilog data plot实测数据的半对数坐标曲线图
相关短句/例句

log-polar coordinate对数极坐标
1.Considering the need of real time and image in log-polar coordinate having scale and rotate un-variance property,a fast IR image registration algorithm based on coordinate dual-axis projection is proposed.考虑红外图像的实时配准需求,利用对数极坐标图像的尺度、转不变特性,将配准过程从直角坐标空间引入到对数极坐标空间,提出了基于双投影策略的配准算法,将二维空间的配准参数估计转换成两个一维曲线的空间距离估计。
2.In the shape matching of the two targets similarity comparison,the focus of this approach is to use the shape context algorithm to calculate log-polar coordinate histogram Cost value,the calculation of similarity to the pre-set thresholds to determine whether his face matcheds.在形状匹配中,将2个目标进行相似度比较,得到2幅图的对数极坐标直方图的Cost值,计算相似度是否达到预设的阈值来判定其人脸是否匹配。
3)log-polar transform对数极坐标变换
1.Mutual information image registration based on log-polar transform对数极坐标变换域下互信息图像配准方法
2.The log-polar transform (LPT) is utilized and an anti-rotation and anti-scale image matching algorithm is proposed based on the image edge feature point extraction.在惯性导航系统中,定量分析了景象匹配过程中惯性导航系统漂移和无线电气压高度表测量误差对实测图的旋转和尺度所造成的影响,引入了对数极坐标变换。
3.Secondly,by using the scaling and rotation invariance of log-polar transform,the changes of object scale and rotation are converted into transformation in orthogonal coordinate;.该算法首先在当前帧对应位置进行降分辨率处理,并以基于增量试探的meanshift跟踪算法收敛点作为当前帧目标中心位置,进而利用对数极坐标变换的旋转、尺度不变性,对目标和候选目标分别进行对数极坐标映射,并通过求取最大归一化相关函数确定目标的尺度变化。
4)Log-polar transformation对数极坐标变换
1.This paper presents a fast log-polar transformation(LPT) algorithm,which speeds up processing from Cartesian coordinates to log-polar coordinates as well as speeding up image matching by using a dual-axis projection algorithm.针对这一问题,提出了一种快速对数极坐标变换算法,加快了从笛卡儿坐标转换到对数极坐标的过程。
2.The proposed algorithm is as follows:SUSAN algorithm used to obtain the feature corner points(interesting points) of the two images;log-polar transformation and projection correlation matching algorithm used to acquire the registration parameter of the two images.算法首先使用SUSAN算子提取两幅图像的特征角点,然后使用对数极坐标变换和投影相关匹配算法实现特征点匹配。
5)pseudo-log-polar伪对数极坐标
1.Next,interpolated by pseudo-log-polar discrete Fourier transform(DFT),the log-polar DFT values of images can be approximated more accurately than by conventional techniques.针对存在平移、旋转和尺度关系的多传感器、多谱段遥感图像配准问题,提出了一种基于边缘特征提取和伪对数极坐标傅里叶变换(EPLPFFT)的频域配准技术。
6)polar-log coordinate transform极对数坐标变换
延伸阅读

半对数坐标Image:11802736694318756.jpg 半对数坐标
算术坐标系统:就是普通的笛卡儿坐标,横纵的刻度都是是等距的。(举例来说:如果每1cm的长度都代表2,则刻度按照顺序0,2,4,6,8,10,12,14……)对数坐标:坐标轴是按照相等的指数变化来增加的,(举例来说:如果每1cm代表10的1次方增加,则坐标轴刻度依次为1,10,100,1000,10000……)半对数坐标系统:只有一个坐标轴是对数坐标,另一个是普通算术坐标。