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(WidthHeightSystem.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); }