C#实现小波变换算法详解与 haar/daubechies滤波器应用

 if (curBitmap != null)
            {
                wlTrans waveletCode = new wlTrans();
                if (waveletCode.ShowDialog() == DialogResult.OK)
                {
                    Rectangle rect = new Rectangle(0, 0, curBitmap.Width, curBitmap.Height);
                    System.Drawing.Imaging.BitmapData bmpData = curBitmap.LockBits(rect, System.Drawing.Imaging.ImageLockMode.ReadWrite, curBitmap.PixelFormat);
                    IntPtr ptr = bmpData.Scan0;
                    int bytes = curBitmap.Width * curBitmap.Height;
                    byte[] grayValues = new byte[bytes];
                    System.Runtime.InteropServices.Marshal.Copy(ptr, grayValues, 0, bytes);

                    byte wlSeries = waveletCode.GetSeries;
                    byte waveletBase = waveletCode.GetBase;

                    double[] tempA = new double[bytes];
                    double[] tempB = new double[bytes];
                    for (int i = 0; i < bytes; i++)
                    {
                        tempA[i] = Convert.ToDouble(grayValues[i]);
                    }
                    double[] lowFilter = null;
                    double[] highFilter = null;

                    switch (waveletBase)
                    {
                        case 0://haar
                            lowFilter = new double[] { 0.70710678118655, 0.70710678118655 };
                            break;
                        case 1://daubechies2