OpenCv故障排除(-4:内存不足)无法分配

Question

QCoreApplication a(argc, argv);
cv::Mat src=imread("/home/cdukunlu/Downloads/EuFFJ.jpg");
float data[9]= {161.837869,0.059269,319.778713,0.000000,165.648492,230.424626,0.000000,0.000000,1.000000};
float rectification[9]={1.000000,0.000000,0.000000,0.000000,1.000000,0.000000,0.000000,0.000000,1.000000};
cv::Vec<float,4> k(0.148201,-0.031856,0.012784,-0.003392);
cv::Mat F = cv::Mat(3, 3, CV_32FC1, data);
cv::Mat R = cv::Mat(3, 3, CV_32FC1, rectification);
std::cout<<"Calibrationg..."<<std::endl;

cv::Size size = {src.cols, src.rows};
cv::Mat K(3, 3, cv::DataType<double>::type);
K.at<double>(0, 0) = 1307.2807020496643;
K.at<double>(0, 1) = 0.0;
K.at<double>(0, 2) = 530.3754311563506;
K.at<double>(1, 0) = 0.0;
K.at<double>(1, 1) = 1318.342691460933;
K.at<double>(1, 2) = 354.98352268131123;
K.at<double>(2, 0) = 0.0;
K.at<double>(2, 1) = 0.0;
K.at<double>(2, 2) = 1.0;
cv::Mat D(4, 1, cv::DataType<double>::type);
D.at<double>(0, 0) = -0.2994762856767568;
D.at<double>(1, 0) = 0.5036082961388784;
D.at<double>(2, 0) = -4.231072729639434;
D.at<double>(3, 0) = 3.8646397788794578;
cv::Mat E = cv::Mat::eye(3, 3, cv::DataType<double>::type);
cv::Mat map1;
cv::Mat map2;
std::cout << K << std::endl;
std::cout << D << std::endl;
std::cout << E << std::endl;
std::cout << size << std::endl;
cv::initUndistortRectifyMap(K, D, E, K, size, CV_16SC2, map1, map2);

terminate called after throwing an instance of 'cv::Exception'
what():  OpenCV(4.5.5-pre) /home/cdukunlu/opencv_build/opencv/modules/core/src/alloc.cpp:73: error: (-4:Insufficient memory) Failed to allocate 61343654331232 bytes in function 'OutOfMemoryError'

造成这种情况的原因是什么？

Answer 1

我已经解决了检查opencv库的问题。

由于ı在我的ubuntu上安装了两个不同的库；OpenCV版本的预编译版本是3.x，但我的代码是在不同版本的OpenCV上测试的，它是OpenCV 4.5.2

一旦ı将版本从3.x更改为4.5.2，问题就消失了。

毕竟，最好只使用一个版本的库来避免错误。