draw a ellipse on an image

Question

hai... in my project , we need to draw an ellipse on an image. the project is coded in c#. how can i draw an ellipse on an image . i hope reply soon thanks in advance

Amit Choudhary · Answer

hi friend, use below code to draw ellipse on image: Graphics xGraph; int k; int r; int x, y; Bitmap DrawArea; DrawArea = new Bitmap(Width,Height,System.Drawing.Imaging.PixelFormat.Format24bppRgb); xGraph = Graphics.FromImage(DrawArea); Random rnd = new Random((int)DateTime.Now.Ticks); // seeded with ticks Pen myPen = new Pen(Color.Red); // Drawing random circles in the bitmap image area myPen.Color = Color.FromArgb( (rnd.Next(0, 255)), (rnd.Next(0, 255)), (rnd.Next(0, 255))); System.Drawing.Image image= System.Drawing.Image.FromFile("C:\abc.jpg"); xGraph.DrawImage(image, 0, 0, DrawArea.Width, DrawArea.Height, System.Drawing.GraphicsUnit.Pixel); xGraph.DrawEllipse(myPen, x - r, y - r, r, r); DrawArea.Save("C:\abc.bmp"); xGraph.Dispose(); DrawArea.Dispose(); Please mark as answer if it helps.

ffvc ret · Answer

have you checked this image drawing tutorial , not only it can help me draw ellipse but also other graphics on image and document page. it worked well for me. besides you can add ellipse annotation.

shameer pv · Answer

thanx for ur reply......... when executing this i have an error . the error msg is "A Graphics object cannot be created from an image that has an indexed pixel format". i'm trying to draw ellipse on a binary image. i hope u will reply soon thanx in advance

Aleksandar Ilioski · Answer

Here is some example code: how to draw eclipse on image.. hope it will help you.. { Image img = Image.FromFile("d:\img.jpg"); gr = Graphics.FromImage(img); gr.DrawEllipse(Pens.Black, 0, 0, 200, 100); img.Save("d:\newImg.jpg"); }

draw a ellipse on an image

Answers (4)