我不知道我做錯了什麼。我在OpenCV中出現錯誤「approxPolyDP(ROI_Vertices,ROI_Poly,1.0,true)」
Mat mask(img.size(), CV_8UC1, Scalar::all(0));
// Create Polygon from vertices
vector<Point> ROI_Vertices(4);
ROI_Vertices.push_back(Point(196,40));
ROI_Vertices.push_back(Point(47,450));
ROI_Vertices.push_back(Point(204,450));
ROI_Vertices.push_back(Point(275,40));
vector<Point> ROI_Poly;
approxPolyDP(ROI_Vertices, ROI_Poly, 1.0, true);
// Fill polygon white
fillConvexPoly(mask, &ROI_Poly[0], ROI_Poly.size(), 255, 8, 0);
// Create new image for result storage
Mat resImage(480, 640, CV_8UC3);
// Cut out ROI and store it in imageDest
img.copyTo(resImage, mask);
imshow("h",img);
imshow("hh",resImage);
我覺得我的程序識別
ROI_Vertices已經點(0,0)
我該如何解決這個問題?
看來,您必須閱讀C++向量如何工作 – Miki