用opencv中的warpAffine获取仿射变换图片保存

#include <iostream> #include <vector> #include <time.h> #include <opencv2/opencv.hpp> //#include <opencv2/highgui/highgui.hpp> //#include <opencv2/contrib/contrib.hpp> //#include <opencv2/imgproc/imgproc.hpp> using namespace std; using namespace cv; const int width = 64; const int height = 64; int main() { Mat src; string test_path = "C:\\test\\xuetielong\\"; string tu_path = "C:\\tu\\xuetielong\\"; string final_path = "C:\\tu\\z_final\\xuetielong\\"; Directory dir; //遍历文件夹内.bmp文件 vector<string> fileNames = dir.GetListFiles(test_path, "*.bmp", false); for (int i = 0; i < fileNames.size(); i++) { //灰度读取图像，改变图像大小，保存 src = imread(test_path + fileNames[i], 0); Mat dst(width, height, src.type()); resize(src, dst, dst.size(), 0, 0, INTER_LINEAR); imwrite(tu_path + fileNames[i], dst); } vector<string> fileNames_tu = dir.GetListFiles(tu_path, "*.bmp", false); for (int i = 0; i < fileNames_tu.size(); i++){ src = imread(tu_path + fileNames_tu[i], 1); srand((unsigned)time(NULL)); for (int j = 1; j < 99; j++){ //int转string，获取仿射变换保存文件名 stringstream stream; stream << j; string name = final_path + stream.str() + "_" + fileNames_tu[i]; double Rand = double((rand() % 10000) - 5000) / 1000000;//产生随机数-0.005000到0.005000 double Rands = double((rand() % 99) + 9900) / 10000;//产生随机数0.9900到0.9999 Point2f srcTri[3]; Point2f dstTri[3]; //Mat rot_mat(2, 3, CV_32FC1); Mat warp_mat(2, 3, CV_32FC1); Mat warp_dst, warp_rotate_dst; srcTri[0] = Point2f(0, 0); srcTri[1] = Point2f(src.cols - 1, 0); srcTri[2] = Point2f(0, src.rows - 1); dstTri[0] = Point2f(src.cols*Rand, src.rows*Rand); dstTri[1] = Point2f(src.cols*Rands, src.rows*Rand); dstTri[2] = Point2f(src.cols*Rand, src.rows*Rands); warp_mat = getAffineTransform(srcTri, dstTri); warpAffine(src, warp_dst, warp_mat, src.size()); //旋转，缩放因子再次变换 //Point center = Point(warp_dst.cols / 2, warp_dst.rows / 2); //double angle = 1.0; //double scale = 0.998; //rot_mat = getRotationMatrix2D(center, angle, scale); //warpAffine(warp_dst, warp_rotate_dst, rot_mat, warp_dst.size()); imwrite(name, warp_dst); } } waitKey(0); return 0; }

读取文件夹内一定图像，仿射变换后并保存，使文件夹内图像保证2000张以上。