returns the rotation angle. When the angle is 0, 90, 180, 270 etc., the rectangle becomes an up-right rectangle.floatangle;}; 下面是自定义的一个快捷画斜矩形的函数 voiddrawRotatedRect(InputOutputArrayimg,RotatedRectrRect,constScalar&color,intthickness=1,intlineType=LINE_8,intshift=0){Poi...
cv::findContours(binary_img,contours,cv::RETR_EXTERNAL,cv::CHAIN_APPROX_NONE); drawContour():根据一组点画出轮廓 voidcv::drawContours(InputOutputArray image,InputArrayOfArrays contours,intcontourIdx,const Scalar &color,intthickness=1,intlineType=LINE_8,InputArrayhierarchy=noArray(),intmaxLevel=INT_...
voiddrawRotatedRect(InputOutputArray img,RotatedRect rRect,constScalar&color,intthickness=1,intlineType=LINE_8,intshift=0){Point2f vertices[4];rRect.points(vertices);for(inti=0;i<4;i++){line(img,vertices[i],vertices[(i+1)%4],color,lineType,shift);}} ...
2.轮廓外接最小矩形minAreaRect() RotatedRect cv::minAreaRect ( InputArray points ) array:输入的灰度图像或者2D点集,数据类型为vector<Point>或者Mat。 示例代码: //轮廓最小外接矩阵void Contour_external_minmatrix(Mat image){Mat gray,binary;cvtColor(image,gray,COLOR_BGR2GRAY);//灰度化GaussianBlur(...
RotatedRect calculatedRect; while (waitKey(5000) != 27) { // Create a rectangle, rotating it by 10 degrees more each time. originalRect = RotatedRect(Point2f(100, 100), Size2f(100, 50), angle); // Convert the rectangle to a vector of points for minAreaRect to use. ...
RotatedRect RRect = minAreaRect(Contours[t]); double AreaRRect = RRect.size.area(); if (AreaRRect == MaxAreaRRect ) { SizeContour = SizeContour + 1; // Rotate degree RRect_degree = RRect.angle; // Draw this rectangle
OpenCV中RotatedRect的尺寸的相对大小的模糊性 我正在尝试使用OpenCV对图像中某些对象周围的旋转矩形的纵横比设置阈值。为了将旋转矩形的纵横比与阈值进行比较,我需要取旋转矩形的较长维度和较短维度的比率。在这方面我很困惑: OpenCV中的约定是什么?rotatedRectanlge.size.width总是比rotatedRectangle.size.height小吗...
Count(); i++) { RotatedRect box = boxList[i]; Rectangle rectangleTemp = box.MinAreaRect(); //这里对取到的顶点坐标进行了加宽,因为矩形可能存在角度,这里没有进行角度旋转,所以加宽了取值范围就可以取到完整的图了 rectangleTemp = new Rectangle(rectangleTemp.X * scale, rectangleTemp.Y * scale,...
. @param thickness Thickness of lines that make up the rectangle. Negative values, like #FILLED, . mean that the function has to draw a filled rectangle. . @param lineType Type of the line. See #LineTypes . @param shift Number of fractional bitsinthe point coordinates. ...
());34.35.//寻找轮廓的外接矩形36.for(intn=0;n<contours.size();n++)37.{38.// 最大外接矩形39.Rectrect=boundingRect(contours[n]);40.rectangle(img1,rect,Scalar(0,0,255),2,8,0);41.42.// 最小外接矩形43.RotatedRectrrect=minAreaRect(contours[n]);44.Point2fpoints[4];45.rrect....