1) improved log-polar transformation
改进对数极坐标变换
1.
The improved log-polar transformation and projection correlation matching algorithm were used to acquire the registration parameter of the two images.
算法的实现是首先使用SUSAN算子提取两幅图像的特征角点,剔除虚假的特征点(噪声点),然后使用改进对数极坐标变换和投影相关匹配算法实现特征点匹配;结合亚像素定位技术,可以进一步提高算法的精度。
2) 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。
3) 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。
4) polar-log coordinate transform
极对数坐标变换
5) Log-polar transformation
对数-极坐标变换
6) polar transformation
极坐标变换
1.
First, the curvilinear integral is simplified by making use of polar transformation, and then some results are given with various n and L.
首先利用极坐标变换将曲线积分化简,然后对n、L不同情况给出相应结果。
补充资料:半对数坐标
Image:11802736694318756.jpg
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。
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