csharp: use custom fonts in Emgu.CV
阿新 • • 發佈：2020-07-13
// from https://stackoverflow.com/questions/35381238/how-to-use-custom-fonts-in-emgucv
string text = "塗聚文(Geovin Du)";
// 下面定義一個矩形區域
int rectWidth = text.Length * (fontSize + 10);
int rectHeight = fontSize + 10;
//Draw detected area
foreach (Rectangle face1 in faces)
{
// 宣告矩形域
// Rectangle textArea = new Rectangle(face1.X + face1.Width, face1.Y, rectWidth, rectHeight);
//grapPic.DrawString(text, font, whiteBrush, textArea);
//image.Draw(textArea, new Bgr(Color.Red), 2);
image.Draw(face1, new Bgr(Color.Red), 2); //
//中文亂碼
CvInvoke.PutText(image, "geovindu", new System.Drawing.Point(face1.X-25, face1.Y-25), Emgu.CV.CvEnum.FontFace.HersheyScriptComplex,2, new MCvScalar(255, 255, 0), 2);
System.Drawing.Bitmap bmp;
bmp = new System.Drawing.Bitmap(200, 45);
Graphics g = Graphics.FromImage(bmp);
Font drawFont = new Font("宋體", 24, FontStyle.Bold);
g.DrawString(text, drawFont, Brushes.Red, new PointF(0, 0));
g.Save();
for (int i = 0; i < 200; i++)
{
for (int j = 0; j < 45; j++)
{
Color c = bmp.GetPixel(i, j);
if (c.R > 0 || c.B > 0 || c.G > 0)
{
CvInvoke.cvSet2D(image, j + 10 + 200, i + 200, new MCvScalar(c.B, c.G, c.R)); //修改對應畫素值
}
}
}
//自定義字型 Geovin Du
// 'PrivateFontCollection' is in the 'System.Drawing.Text' namespace
var foo = new PrivateFontCollection();
//
string fonfile =Environment.CurrentDirectory+ @"/font/迷你繁篆書.ttf";
foo.AddFontFile(fonfile);
var myCustomFont = new Font((FontFamily)foo.Families[0], 36f);
//Emgu.CV.CvEnum.FontFace.HersheyScriptComplex
System.Drawing.Bitmap bmpd;
bmpd = new System.Drawing.Bitmap(200, 45);
Graphics gg = Graphics.FromImage(bmpd);
gg.DrawString("塗聚文 Geovin Du", myCustomFont, Brushes.Red, new PointF(0, 0));
gg.Save();
//根據圖片的大小
for (int i = 0; i < 200; i++)
{
for (int j = 0; j < 45; j++)
{
Color c = bmpd.GetPixel(i, j);
if (c.R > 0 || c.B > 0 || c.G > 0)
{
CvInvoke.cvSet2D(image, j + 10 + 500, i +500, new MCvScalar(c.B, c.G, c.R)); //修改對應畫素值
}
}
}
}
foreach (Rectangle eye1 in eyes)
{
image.Draw(eye1, new Bgr(Color.Blue), 2);
}