opencv - 使用Emgu绘制文本轮廓图

Question

我想注释相机提要。我目前正在使用这些API

Image<Bgr, byte>.Draw();

但是，根据照明，文本不可读。所以我想用黑色边框和白色填充绘制文本。如何使用Emgu做到这一点？

Answer 1

var labeledCameraFrame = new Image<Bgr, byte>(cameraFrame.Bitmap);

var border = new Rectangle(0, 0, 200, 40);
labeledCameraFrame.Draw(border, new Bgr(Color.White), -1);
labeledCameraFrame.Draw(border, new Bgr(Color.Black));

CvInvoke.PutText(labeledCameraFrame, "Hello, world", new Point(10, border.Height - 10), FontFace.HersheySimplex, 1.0, new Bgr(Color.Blue).MCvScalar);