这两个函数返回的是指向原矩阵内部位置的指针,类似于浅拷贝: code cv::Mat align_mean(cv::Mat mean, cv::Rect facebox, float scaling_x=1.0f, float scaling_y=1.0f, float translation_x=0.0f, float translation_y=0.0f) { using cv::Mat; // Initial estimate x_0: Center the mean face at th
ElasticSearch 2 (23) - 语言处理系列之词根提取 摘要 世界上大多数语言都是屈折变化的,意思是词语可以通过变形来表达不同的含义: 数(Number): fox, foxes 时态(Tense): pay, paid, paying 性(Gender): waiter, waitress 人称(Person): hear, hears 格(Case): I, me, my 体(Aspect): ate, eaten 情态(Mood): so be it, were it so
#include <opencv2/opencv.hpp> #include <iostream> #include <math.h> using namespace cv; using namespace std; int main(int argc, char** argv) { Mat src = imread("test.jpg"); if (src.empty()) { printf("could not load image..
The Fourier Transform will decompose an image into its sinus and cosines components. In other words, it will transform an image from its spatial domain to its frequency domain. The idea is that any function may be approximated exactly with the sum of
OpenCV中实现图像翻转的函数flip,公式为: 目前fbc_cv库中也实现了flip函数,支持多通道,uchar和float两种数据类型,经测试,与OpenCV3.1结果完全一致. 实现代码flip.hpp: // fbc_cv is free software and uses the same licence as OpenCV // Email: fengbingchun@163.com #ifndef FBC_CV_FLIP_HPP_ #define FBC_CV_FLIP_HPP_
OpenCV中的transpose函数实现图像转置,公式为: 目前fbc_cv库中也实现了transpose函数,支持多通道,uchar和float两种数据类型,经测试,与OpenCV3.1结果完全一致. 实现代码transpose.hpp: // fbc_cv is free software and uses the same licence as OpenCV // Email: fengbingchun@163.com #ifndef FBC_CV_TRANSPOSE_HPP_ #def
threshold algorithm: The simplest image segmentation method. All thresholding algorithms take a source image (src) and a threshold value (thresh) as input and produce an output image (dst) by comparing the pixel value at source pixel( x , y ) to the
OpenCV里提取目标轮廓的函数是findContours,它的输入图像是一幅二值图像,输出的是每一个连通区域的轮廓点的集合:vector<vector<Point>>. 外层vector的size代表了图像中轮廓的个数,里面vector的size代表了轮廓上点的个数. hiararchy参数和轮廓个数相同,每个轮廓contours[ i ]对应4个hierarchy元素hierarchy[ i ][ 0 ] ~hierarchy[ i ][ 3 ],分别表示后一个轮廓.前一个轮廓