public Image Filter(string size, string lambda, string filterBankCount, string psi, string sigma, string gamma)
{
Image result = null;
if (_inputBitmap == null)
{
return(result);
}
Bitmap input = Accord.Imaging.Image.Clone(_inputBitmap, PixelFormat.Format24bppRgb);
Cursor.Current = Cursors.WaitCursor;
GaborFilter filter = new GaborFilter();
try
{
filter.Size = Convert.ToInt16(size, Thread.CurrentThread.CurrentCulture);
filter.Lambda = Double.Parse(lambda, Thread.CurrentThread.CurrentCulture);
filter.Psi = Double.Parse(psi, Thread.CurrentThread.CurrentCulture);
filter.Sigma = Double.Parse(sigma, Thread.CurrentThread.CurrentCulture);
filter.Gamma = Double.Parse(gamma, Thread.CurrentThread.CurrentCulture);
}
catch (FormatException)
{
MessageBox.Show("FormatException");
}
catch (OverflowException)
{
MessageBox.Show("OverflowException");
}
catch (DivideByZeroException)
{
MessageBox.Show("Choose another set of values. The one you have chosen is invalid.");
}
Cursor.Current = Cursors.Default;
result = FilterByGaborBank(filter, input, Int32.Parse(filterBankCount));
return(result);
}
private Bitmap FilterByGaborBank(GaborFilter filter, Bitmap inputBitmap, int gaborFilterCount)
{
ImagesNormalizer imagesNormalizer = new ImagesNormalizer(inputBitmap);
double radiansStep = 2.0d * Math.PI / ((double)gaborFilterCount);
for (double radians = 0.0d; radians < 2.0d * Math.PI; radians += radiansStep)
{
Console.WriteLine("Processing gabor by angle = {0}", radians);
// perform Gabor filtering and add result to a sum of other maps
filter.Theta = radians;
Bitmap outputBitmap = filter.Apply(inputBitmap);
imagesNormalizer.AddBitmap(outputBitmap);
}
// normalize all added filters into one image in luminance channel
Bitmap result = imagesNormalizer.Normalize();
return(result);
}
