FPS 每秒帧数背景消除建模 BSMBackground SUbtractionBS算法

图像分割(GMM-高斯混合模型)  机器学习(KNN-K临近)

#include #include #include #include #include#include #include using namespace std;using namespace cv;int main(){VideoCapture cap;cap.open("/media/laniakea/新加卷/ubuntu/board/train1.mp4");if(!cap.isOpened()){cout<<"no video";return -1;}Mat frame;Mat idontknoew;namedWindow("input",CV_WINDOW_AUTOSIZE);namedWindow("MOG2",CV_WINDOW_AUTOSIZE);Ptr pMOG2 = createBackgroundSubtractorMOG2();while (cap.read(frame)){imshow("input",frame);pMOG2->apply(frame,idontknoew);imshow("MOG2",idontknoew);char c = waitKey(100);if(c == 27){break;}}cap.release();waitKey(0);return 0;}

一般应用于背景静止状态

基于颜色的对象跟踪

颜色范围过滤  标注与测量

颜色过滤

inRange过滤  形态学操作提取  轮廓查找  外界矩形获取  位置标定

#include#include #include using namespace std;using namespace cv;Rect roi;void processFrame(Mat &binary, Rect &rect){vector > contours;vector hierarchy;findContours(binary,contours,hierarchy,RETR_EXTERNAL,CHAIN_APPROX_SIMPLE,Point(0,0));if (contours.size() > 0){double maxArea = 0.0;for (size_t t = 0; t < contours.size(); t++){double area = contourArea(contours[static_cast(t)]);//最大外接矩形if (area > maxArea){maxArea = area;rect = boundingRect(contours[static_cast(t)]);  }    }      }else {rect.x = rect.y = rect.width = rect.height = 0;  }}int main(){  VideoCapture cap;  cap.open("/media/laniakea/新加卷/ubuntu/board/train1.mp4");  if(!cap.isOpened()){    cout<<"no file to open \n";    return -1;  }  Mat frame,mask;  namedWindow("input",CV_WINDOW_AUTOSIZE);  namedWindow("mask",CV_WINDOW_AUTOSIZE);  Mat kernel1 = getStructuringElement(MORPH_RECT, Size(3, 3), Point(-1, -1));//(-1,-1) 默认中心位置  Mat kernel2 = getStructuringElement(MORPH_RECT, Size(5, 5), Point(-1, -1));  while (cap.read(frame)){  inRange(frame,Scalar(0,0,107),Scalar(90,90,255),mask);//2 形态学操作提取  morphologyEx(mask, mask, MORPH_OPEN, kernel1, Point(-1, -1), 1); // 开操作//3 轮廓查找  dilate(mask, mask, kernel2, Point(-1, -1), 4);// 膨胀  imshow("mask",mask);  processFrame(mask,roi);  rectangle(frame,roi,Scalar(0,255,0),3,8,0);  //roi就是矩形  Point p = Point(roi.tl().x,roi.tl().y);  String s = to_string(roi.tl().x) + " ," + to_string(roi.tl().y);        putText(frame,s,p,FONT_HERSHEY_TRIPLEX,0.8,Scalar(255,0,0),2,CV_AA);  imshow("input",frame);  char c = waitKey(100);  if(c==27){    break;  }    }  cap.release();  waitKey(0);  return 0;}