AForge.Imaging.Image.FromFile C# (CSharp) Method

        public static System.Drawing.Bitmap FromFile( string fileName )
        {
            Bitmap loadedImage = null;
            FileStream stream = null;

            try
            {
                // read image to temporary memory stream
                stream = File.OpenRead( fileName );
                MemoryStream memoryStream = new MemoryStream( );

                byte[] buffer = new byte[10000];
                while ( true )
                {
                    int read = stream.Read( buffer, 0, 10000 );

                    if ( read == 0 )
                        break;

                    memoryStream.Write( buffer, 0, read );
                }

                loadedImage = (Bitmap) Bitmap.FromStream( memoryStream );
            }
            finally
            {
                if ( stream != null )
                {
                    stream.Close( );
                    stream.Dispose( );
                }
            }

            return loadedImage;
        }

        public static MedalType DetermineMedalOnCard(Bitmap card)
        {
            ExhaustiveTemplateMatching tm = new ExhaustiveTemplateMatching(0);

            var goldSimilarity = tm.ProcessImage(card, Image.FromFile("TemplateImages/gold_medal.png"), new Rectangle(80, 40, 200, 200))[0].Similarity;

            if (goldSimilarity > 0.95f)
            {
                return(MedalType.Gold);
            }

            var silverSimilarity = tm.ProcessImage(card, Image.FromFile("TemplateImages/silver_medal.png"), new Rectangle(80, 40, 200, 200))[0].Similarity;

            if (silverSimilarity > 0.95f)
            {
                return(MedalType.Silver);
            }

            var bronzeSimilarity = tm.ProcessImage(card, Image.FromFile("TemplateImages/bronze_medal.png"), new Rectangle(80, 40, 200, 200))[0].Similarity;

            if (bronzeSimilarity > 0.95f)
            {
                return(MedalType.Bronze);
            }

            var noMedalSimilarity = tm.ProcessImage(card, Image.FromFile("TemplateImages/no_medal.png"), new Rectangle(80, 40, 200, 200))[0].Similarity;

            if (noMedalSimilarity > 0.95f)
            {
                return(MedalType.None);
            }

            return(MedalType.Uncertain);
        }