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System.Drawing.Bitmap sourceImage = (Bitmap)Bitmap.FromFile(@"C:\SavedBMPs\1.jpg"); System.Drawing.Bitmap template = (Bitmap)Bitmap.FromFile(@"C:\SavedBMPs\2.jpg"); // create template matching algorithm’s instance // (set similarity threshold to 92.5%)

       ExhaustiveTemplateMatching tm = new ExhaustiveTemplateMatching(0.921f);
            // find all matchings with specified above similarity

            TemplateMatch[] matchings = tm.ProcessImage(sourceImage, template);
            // highlight found matchings

       BitmapData data = sourceImage.LockBits(
            new Rectangle(0, 0, sourceImage.Width, sourceImage.Height),
            ImageLockMode.ReadWrite, sourceImage.PixelFormat);
        foreach (TemplateMatch m in matchings)
        {

                Drawing.Rectangle(data, m.Rectangle, Color.White);

            MessageBox.Show(m.Rectangle.Location.ToString());
            // do something else with matching
        }
        sourceImage.UnlockBits(data);

I warn you it is quite slow takes around 6 seconds to process image of 1024×768 finding in it pciture with the size of 50×50.enter code here