OPENCV获取KINECT资源二值化

#include <iostream> #include <vector> #include <opencv2/core/core.hpp> #include <opencv2/imgproc/imgproc.hpp> #include <opencv2/highgui/highgui.hpp> using namespace std; using namespace cv; int main() { // Read input binary image Mat image= imread("./binaryGroup.bmp",0); if (!image.data) return 0; namedWindow("Binary Image"); imshow("Binary Image",image); // Get the contours of the connected components vector<vector<Point>> contours; //findContours的输入是二值图像 findContours(image, contours, // a vector of contours CV_RETR_EXTERNAL, // retrieve the external contours CV_CHAIN_APPROX_NONE); // retrieve all pixels of each contours // Print contours' length轮廓的个数 cout << "Contours: " << contours.size() << endl; vector<vector<Point>>::const_iterator itContours= contours.begin(); for ( ; itContours!=contours.end(); ++itContours) { cout << "Size: " << itContours->size() << endl;//每个轮廓包含的点数 } // draw black contours on white image Mat result(image.size(),CV_8U,Scalar(0)); drawContours(result,contours, //画出轮廓 -1, // draw all contours Scalar(255), // in black 2); // with a thickness of 2 namedWindow("Contours"); imshow("Contours",result); // Eliminate too short or too long contours int cmin= 100; // minimum contour length int cmax= 1000; // maximum contour length vector<vector<Point>>::const_iterator itc= contours.begin(); while (itc!=contours.end()) { if (itc->size() < cmin || itc->size() > cmax) itc= contours.erase(itc); else ++itc; } // draw contours on the original image Mat original= imread("./group.bmp"); drawContours(original,contours, -1, // draw all contours Scalar(255,255,255), // in white 2); // with a thickness of 2 namedWindow("Contours on Animals"); imshow("Contours on Animals",original); // Let's now draw black contours on white image //result.setTo(Scalar(0)); //If the third parameter of this function is a negative value, then all contours are drawn. //Otherwise, it is possible to specify the index of the contour to be drawn drawContours(result,contours, -1, // draw all contours Scalar(255), // in black 1); // with a thickness of 1 image= imread("./binaryGroup.bmp",1); // testing the bounding box Rect r0= boundingRect(Mat(contours[0]));//boundingRect获取这个外接矩形 rectangle(result,r0,Scalar(255,255,255),2); // testing the enclosing circle float radius; Point2f center; minEnclosingCircle(Mat(contours[1]),center,radius);//对轮廓进行多变形逼近 circle(result,Point(center),static_cast<int>(radius),Scalar(255),2); RotatedRect rrect= fitEllipse(Mat(contours[2])); ellipse(result,rrect,Scalar(255),2); //testing the approximate polygon vector<Point> poly; approxPolyDP(Mat(contours[2]),poly,5,true); cout << "Polygon size: " << poly.size() << endl; //// Iterate over each segment and draw it vector<Point>::const_iterator itp= poly.begin(); while (itp!=(poly.end()-1)) { line(result,*itp,*(itp+1),Scalar(255),2); ++itp; } // last point linked to first point line(result,*(poly.begin()),*(poly.end()-1),Scalar(20),2); // testing the convex hull vector<Point> hull; convexHull(Mat(contours[3]),hull); // Iterate over each segment and draw it vector<Point>::const_iterator it= hull.begin(); while (it!=(hull.end()-1)) { line(result,*it,*(it+1),Scalar(255),2); ++it; } // last point linked to first point line(result,*(hull.begin()),*(hull.end()-1),Scalar(255),2); // testing the moments //iterate over all contours itc= contours.begin(); while (itc!=contours.end()) { // compute all moments Moments mom= moments(Mat(*itc++)); // draw mass center circle(result, // position of mass center converted to integer Point(mom.m10/mom.m00,mom.m01/mom.m00), 2,Scalar(255),2); // draw black dot } namedWindow("Some Shape descriptors"); imshow("Some Shape descriptors",result); // New call to findContours but with CV_RETR_LIST flag image= imread("./binaryGroup.bmp",0); // Get the contours of the connected components findContours(image, contours, // a vector of contours CV_RETR_LIST, // retrieve the external and internal contours CV_CHAIN_APPROX_NONE); // retrieve all pixels of each contours // draw black contours on white image result.setTo(Scalar(0)); drawContours(result,contours, -1, // draw all contours Scalar(255), // in black 2); // with a thickness of 2 namedWindow("All Contours"); imshow("All Contours",result); waitKey(); return 0; }