Example #1
0
        public static Bitmap LaplasjanFilter(Bitmap bitmap)
        {
            Bitmap b = (Bitmap)bitmap.Clone();

            double[,] mask = MaskBox.GetLaplasjanMask();


            for (int i = 1; i < bitmap.Width - 1; i++)
            {
                for (int j = 1; j < bitmap.Height - 1; j++)
                {
                    double sigma = Convolution(GetArea(new Point(i, j), 3, bitmap), mask);


                    byte byt = (byte)(sigma + 0.5);

                    b.SetPixel(i, j, Color.FromArgb(byt, byt, byt));
                }
            }
            return(b);
        }
Example #2
0
        public static Bitmap LowPassFilter(JMask name, Bitmap bitmap)
        {
            Bitmap b = (Bitmap)bitmap.Clone();

            double[,] mask = MaskBox.GetMask(name);


            for (int i = 1; i < bitmap.Width - 1; i++)
            {
                for (int j = 1; j < bitmap.Height - 1; j++)
                {
                    double sigma = Convolution(GetArea(new Point(i, j), 3, bitmap), mask) / (Math.Pow(mask.GetLength(0), 2));



                    byte byt = (byte)(sigma + 0.5);

                    b.SetPixel(i, j, Color.FromArgb(byt, byt, byt));
                }
            }
            return(b);
        }
Example #3
0
        public static Bitmap HighPassFilter(EMask name, Bitmap bitmap)
        {
            Bitmap b = (Bitmap)bitmap.Clone();

            double[,] maskx = MaskBox.GetMaskX(name);
            double[,] masky = MaskBox.GetMaskY(name);

            for (int i = 1; i < bitmap.Width - 1; i++)
            {
                for (int j = 1; j < bitmap.Height - 1; j++)
                {
                    double sigma = Math.Sqrt(Math.Pow(Convolution(GetArea(new Point(i, j), 3, bitmap), maskx), 2)
                                             +
                                             Math.Pow(Convolution(GetArea(new Point(i, j), 3, bitmap), masky), 2));


                    byte byt = (byte)(sigma + 0.5);

                    b.SetPixel(i, j, Color.FromArgb(byt, byt, byt));
                }
            }
            return(b);
        }