I want to draw a rotated rectangle in opencv with c++. I use "rectangle" function like bellow: rectangle(RGBsrc, vertices[0], vertices[2], Scalar(0, 0, 0), CV_FILLED, 8, 0); but this function draw an rectangle with 0 angle. How can i draw rotated rectangle with special angle...
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...
rectangleTemp = new Rectangle(rectangleTemp.X * scale, rectangleTemp.Y * scale, rectangleTemp.Width * scale + scale, rectangleTemp.Height * scale + scale); //取最大的矩形图片 if (rectangleTemp.Width > maxWidth) { maxWidth = rectangleTemp.Width; rectangle = rectangleTemp; } } src.Draw(...
void DrawRect(cv::Mat mask,const cv::Rect &rect, const cv::Scalar &color, int thickness) { cv::rectangle(mask, rect, color, thickness); } // 画椭圆 void DrawEllipse(cv::Mat mask,const cv::RotatedRect &ellipse,const cv::Scalar &color, int thickness) { cv::ellipse(mask, ellipse,...
OpenCV中矩形绘制的函数是rectangle,其函数原型如下: void rectangle(InputOutputArray img, //需绘制矩形的图像 Point pt1, //矩形的一个顶点 Point pt2, //矩形的另一个顶点 const Scalar &color, //矩形线条颜色 int thickness = 1, //线宽,默认为1 ...
【1】给定RotateRect的中心坐标、角度、大小,然后获取旋转矩形端点坐标,通过画线的方法绘制即可。 代码语言:javascript 复制 Mat imgCopy=src.clone();RotatedRect rotateRect;rotateRect.center=Point2f(267.0,160.0);rotateRect.angle=-35;rotateRect.size=Size2f(250.0,180.0);Point2f ptCorner[4];rotateRect.poi...
}//draw itdrawImg =Mat::zeros(src.size(), src.type()); Point2f pts[4];for(size_t t =0; t < contours.size(); t++) { Scalar color= Scalar(rng.uniform(0,255), rng.uniform(0,255), rng.uniform(0,255));//矩形//rectangle(drawImg, ploy_rects[t], color, 2, 8);//圆/...
. @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. ...
4 or 8int shift=0// Bits of radius to treat as fraction);boolellipse(cv::Mat&img,// Image to be drawn onconstcv::RotatedRect&rect,// Rotated rectangle bounds ellipseconstcv::Scalar&color,// Color, BGR formint thickness=1,// Thickness of lineint lineType=8,// Connectedness, 4 or...
(int n=0;n<contours.size();n++) {//用最小外接矩阵求取轮廓中心RotatedRect rrect= minAreaRect(contours[n]);Point2f center=rrect.center;//最小外接矩阵的中心circle(image,center,2,Scalar(0,0,255,255),2,8,0);Mat result;approxPolyDP(contours[n],result,4,true);//多边形拟合drawapp(...