opencv
Dessin de formes (ligne, cercle, ..., etc.) en C ++
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Introduction
Dans OpenCV, on peut dessiner de nombreuses formes telles que point, ligne, cercle, ..., etc. Il existe une option pour remplir une forme. Le code suivant est explicite et montre comment les formes sont dessinées.
Exemple de formes de dessin
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/imgproc.hpp> // drawing shapes
#include <iostream>
int main( int argc, char** argv )
{
// First create a black image.
cv::Mat image(500,500, CV_8UC3, cv::Scalar(0,0,0));
// Check if the image is created successfully.
if( !image.data ){
std::cout << "Could not open or find the image" << std::endl ;
exit(EXIT_FAILURE);
}
//####################( Draw Line )##########################
cv::Point p1(100,100), p2(200,100);
cv::Scalar colorLine(0,255,0); // Green
int thicknessLine = 2;
cv::line(image, p1, p2, colorLine, thicknessLine);
//####################( Draw Circle )#########################
// unfilled circle
cv::Point centerCircle1(250,250);
int radiusCircle = 30;
cv::Scalar colorCircle1(0,0,255);
int thicknessCircle1 = 2;
cv::circle(image, centerCircle1, radiusCircle, colorCircle1, thicknessCircle1);
// filled circle
cv::Point centerCircle2(400,100);
cv::Scalar colorCircle2(0,100,0);
cv::circle(image, centerCircle2, radiusCircle, colorCircle2, CV_FILLED);
//####################( Draw Rectangle )#######################
// unfilled
cv::Point p3(400,400), p4(450,450);
cv::Scalar colorRectangle1(0,0,255);
int thicknessRectangle1 = 3;
cv::rectangle(image, p3, p4, colorRectangle1,thicknessRectangle1);
// filled
cv::Point p5(100,400), p6(150,450);
cv::Scalar colorRectangle2(255,0,255);
cv::rectangle(image, p5, p6, colorRectangle2, CV_FILLED);
//#################( Draw Shapes on Image )######################
cv::namedWindow( "Display window", cv::WINDOW_AUTOSIZE );
cv::imshow( "Display window", image );
cv::waitKey(0);
return 0;
}
La sortie est
OpenCV 3.2 Mac avec compilateur g ++
g++ main2.cpp -o main `pkg-config --cflags --libs opencv`
Modified text is an extract of the original Stack Overflow Documentation
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