ubuntu上opencv中的错误/usr/include/opencv2/nonfree/features2d.hpp错误向量

Posted 2023-02-21

【中文标题】ubuntu上opencv中的错误/usr/include/opencv2/nonfree/features2d.hpp错误向量

【英文标题】：error /usr/include/opencv2/nonfree/features2d.hpp error vector in opencv on ubuntu

【发布时间】：2015-08-06 09:13:53

【问题描述】：

这段代码是Opencv的冲浪算法。我的代码不起作用。我正在使用带有 Opencv 3.0.0 和 gcc/g++ 4.8.4 的 Ubuntu 14.04.2。我要遵守“冲浪算法”

错误内容

/usr/include/opencv2/nonfree/features2d.hpp:73:21: 错误： “向量”尚未声明 矢量和关键点）常量； ^

/usr/include/opencv2/nonfree/features2d.hpp:73:27: 错误： 在“

/usr/include/opencv2/nonfree/features2d.hpp:77:21: 错误： “向量”尚未声明 矢量和关键点， ^

/usr/include/opencv2/nonfree/features2d.hpp:77:27: 错误： 在“

'test_surf.cpp'

#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/nonfree/features2d.hpp>
#include <opencv2/nonfree/nonfree.hpp>
#include <iostream>

using namespace cv;
using namespace std;

int main( int argc, char** argv )

 if( argc != 3)
 
 cout <<" Usage: sift input_image output_image" << endl;
 return -1;
 

 //cv::initModule_nonfree();
 //cout <<"initModule_nonfree() called" << endl;

 Mat image;
 image = imread(argv[1], CV_LOAD_IMAGE_COLOR); 
 if(! image.data )
 
 cout <<  "Could not open or find the image" << std::endl ;
 return -1;
 

 vector<KeyPoint> keypoints;
 Mat descriptors;

 // Create a SIFT keypoint detector.
 SiftFeatureDetector detector;
 detector.detect(image, keypoints);
 cout << "Detected " << (int) keypoints.size() << " keypoints" <<endl;

 // Compute feature description.
 detector.compute(image,keypoints, descriptors);
 cout << "Computed feature."<<endl;

 // Store description to "descriptors.des".
 FileStorage fs;
 fs.open("descriptors.des", FileStorage::WRITE);
 cout << "Opened file to store the features."<<endl;
 fs << "descriptors" << descriptors;
 cout << "Finished writing file."<<endl;
 fs.release();
 cout << "Released file."<<endl;

 // Show keypoints in the output image.
 Mat outputImg;
 Scalar keypointColor = Scalar(255, 0, 0);
 drawKeypoints(image, keypoints, outputImg, keypointColor, DrawMatchesFlags::DRAW_RICH_KEYPOINTS);
 cout << "Drew keypoints in output image file."<<endl;
//
#ifdef WIN32
 namedWindow("Output image", CV_WINDOW_AUTOSIZE );
 imshow("Output image", outputImg);
 waitKey(0);
#endif

 cout << "Generate the output image."<<endl;
 imwrite(argv[2], outputImg);

 cout << "Done."<<endl;
 return 0;

【问题讨论】：

您是否尝试包含标题 ？

Nonfree module is missing in OpenCV 3.0的可能重复

【参考方案1】：

包含头文件向量

  #include <vector>

参考http://www.cplusplus.com/reference/vector/vector/vector/