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view c/cvutils.cpp @ 141:6f10a227486c
modifications to get nframes option working on the command line
author | Nicolas Saunier <nicolas.saunier@polymtl.ca> |
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date | Wed, 24 Aug 2011 01:34:27 -0400 |
parents | 3a11dba30655 |
children | b32947b002da |
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#include "cvutils.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; 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()}; Scalar Colors::black(void) { return Scalar(0,0,0);} Scalar Colors::red(void) { return Scalar(255,0,0);} Scalar Colors::green(void) { return Scalar(0,255,0);} Scalar Colors::blue(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::cyan(void) { return Scalar(0,255,255);} Scalar Colors::yellow(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];}