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view c/cvutils.cpp @ 740:867bab9f317a dev
function to check the existence of tables
author | Nicolas Saunier <nicolas.saunier@polymtl.ca> |
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date | Thu, 27 Aug 2015 23:51:18 -0400 |
parents | 1e3c7fe21a38 |
children | d3e8dd9f3ca4 8ac7f61c6e4f |
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#include "cvutils.hpp" #include "utils.hpp" #include "opencv2/core/core.hpp" #include "opencv2/highgui/highgui.hpp" #include "opencv2/features2d/features2d.hpp" #include <iostream> #include <vector> using namespace std; using namespace cv; Point2f project(const Point2f& p, const Mat& homography) { //Mat homogeneous(3, 1, CV_32FC1); float x, y; float w = homography.at<float>(2,0)*p.x+homography.at<float>(2,1)*p.y+homography.at<float>(2,2); if (w != 0) { x = (homography.at<float>(0,0)*p.x+homography.at<float>(0,1)*p.y+homography.at<float>(0,2))/w; y = (homography.at<float>(1,0)*p.x+homography.at<float>(1,1)*p.y+homography.at<float>(1,2))/w; } else { x = 0; y = 0; } return Point2f(x, y); } Mat loadMat(const string& filename, const string& separator) { vector<vector<float> > numbers = ::loadNumbers(filename, separator); Mat mat; if (!numbers.empty()) { mat = Mat(numbers.size(),numbers[0].size(), CV_32FC1); for (unsigned int i=0; i<numbers.size(); i++) for (unsigned int j=0; j<numbers[0].size(); j++) mat.at<float>(i,j) = numbers[i][j]; } return mat; } void keyPoints2Points(const vector<KeyPoint>& kpts, vector<Point2f>& pts, const bool& clearPts /* = true */) { if (clearPts) pts.clear(); pts.reserve(kpts.size()); for (unsigned int i=0; i<kpts.size(); i++) pts.push_back(kpts[i].pt); } // IplImage* allocateImage(const int& width, const int& height, const int& depth, const int& channels) { return ::allocateImage(cvSize(width, height), depth, channels);} // IplImage* allocateImage(const CvSize& size, const int& depth, const int& channels) { // IplImage* image = cvCreateImage(size, depth, channels); // if (!image) { // cerr << "Error: Couldn't allocate image. Out of memory?\n" << endl; // exit(-1); // } // return image; // } // int goToFrameNum(CvCapture* inputVideo, const int& currentFrameNum, const int& targetFrameNum) { // int frameNum = currentFrameNum; // if (currentFrameNum > targetFrameNum) { // cerr << "Current frame number " << currentFrameNum << " is after the target frame number " << targetFrameNum << "." << endl; // } else if (currentFrameNum < targetFrameNum) { // IplImage* frame = cvQueryFrame(inputVideo); // frameNum++; // while (frame && frameNum<targetFrameNum) { // frame = cvQueryFrame(inputVideo); // frameNum++; // } // } // return frameNum; // } const Scalar Colors::color[] = {Colors::red(), Colors::green(), Colors::blue(), Colors::cyan(), Colors::magenta(), Colors::yellow(), Colors::white(), Colors::black()}; // Blue, Green, Red Scalar Colors::black(void) { return Scalar(0,0,0);} Scalar Colors::blue(void) { return Scalar(255,0,0);} Scalar Colors::green(void) { return Scalar(0,255,0);} Scalar Colors::red(void) { return Scalar(0,0,255);} Scalar Colors::white(void) { return Scalar(255,255,255);} Scalar Colors::magenta(void) { return Scalar(255,0,255);} Scalar Colors::yellow(void) { return Scalar(0,255,255);} Scalar Colors::cyan(void) { return Scalar(255,255,0);} Scalar Colors::color3(const int& num) { return Colors::color[num%3];} Scalar Colors::color8(const int& num) { return Colors::color[num%Colors::nColors];}