当我们在编译代码时,如果出现undefined reference to cv::VideoCapture::VideoCapture()`的错误信息,就意味着编译器无法找到相应的函数定义。 解决方法 出现undefined reference to cv::VideoCapture::VideoCapture()`的错误通常是由于链接器无法找到相应的库文件引起的。要解决这个问题,我们...
double get(cv::VideoCaptureProperties propId) const: 获取指定属性的值,如帧率、图像大小等。 bool set(cv::VideoCaptureProperties propId, double value): 设置指定属性的值。 double get(cv::VideoCaptureProperties propId, std::string& stringValue): 获取指定属...
undefined reference to 'cv::String::deallocate()' undefined reference to 'cv::imread(cv::String const&, int)' undefined reference to 'cv::String::deallocate()' undefined reference to 'cv::String::allocate(unsigned long)' undefined reference to 'cv::String::allocate(unsigned long)' undefined...
1 undefined reference to `cv::fastFree(void*)' 3 OpenCV java.lang.UnsatisfiedLinkError 7 Undefined Reference To 'cv::initModule_nonfree()' In Android 1 Undefined symbols for architecture arm64: "cv::String::deallocate()" 4 undefined reference to 'cv::CascadeClassifier::detectMultiScale'...
I'm trying to use opencv native library in an android studio project. I get an error for undefined reference for the function knnMatch. I have added openCVLibrary to my project and had success to use other openCV features. Is there a specific why to use libopencv_features2d?
一、问题描述 用cmake编译时出现这个问题: undefined reference to cv::imread(std::__cxx11::basic_string… 对‘cv::imread(std::__cxx11::basic_string<char, std::char_traits, std::allocator > const&, int)’未定义的引用 二、原因
undefined reference to `cv::VideoCapture 出现opencv链接的问题原因: 1. 路径设置不正确,caffe会优先搜索Makefile.config里面的环境设置 2. anaconda2装的opencv和配置的opencv路径不一致 比如,我在 安装anaconda2时配置了opencv3,bashrc里面设置了opencv3的路径,但是Makefile.config里面设置了opencv2的路径,程序会直接...
I am building a project with OpenCV 4 beta and when I use the function cv::imread or cv::imwrite I get an undefined reference to the functions. My CMakeLists.txt is as follows: cmake_minimum_required(VERSION 3.1.0) project(myImageProgram...
答案是:通过引用计数机制(reference counting mechanism)来实现,由最后一个使用它的对象来清空。每次...
cv::Mat M(2,2,CV_8UC3,cv::Scalar(0,0,255)); System information (version) OpenCV => :4.5.3: Ubuntu => 20.04 It reported: undefined reference tocv::Mat::Mat(int, int, int, cv::Scalar_<double> const&)' undefined reference tocv::Formatter::get(cv::Formatter::FormatType)' ...