private void btnForward_Click(object sender, EventArgs e)
{
if ((string)cbWavelet.SelectedItem == "Haar")
wavelet = new Haar((int)numIterations.Value);
else wavelet = new CDF97((int)numIterations.Value);
// Create forward transform
WaveletTransform wt = new WaveletTransform(wavelet);
// Apply forward transform
transformed = wt.Apply(lenna);
pictureBox.Image = transformed;
}