private static double[] GetTrainingImage(FeatureRecognizer_Image image, ConvolutionBase2D kernel)
{
// Enlarge the initial image by the kernel's reduction so that after convolution, it is the desired size
VectorInt reduction = kernel.GetReduction();
if (reduction.X != reduction.Y)
{
throw new ApplicationException(string.Format("Kernel should be square: {0}x{1}", reduction.X, reduction.Y));
}
BitmapSource bitmap = new BitmapImage(new Uri(image.Filename));
bitmap = UtilityWPF.ResizeImage(bitmap, IMAGESIZE + reduction.X, true);
Convolution2D retVal = UtilityWPF.ConvertToConvolution(bitmap, 1d);
if (retVal.Width != retVal.Height)
{
retVal = Convolutions.ExtendBorders(retVal, IMAGESIZE + reduction.X, IMAGESIZE + reduction.X); //NOTE: width or height is already the desired size, this will just enlarge the other to make it square
}
retVal = Convolutions.Convolute(retVal, kernel);
retVal = Convolutions.Abs(retVal);
// It looks better when it's black on white
double[] inverted = retVal.Values.
Select(o => 1d - o).
ToArray();
return(inverted);
}
private void Browse_Click(object sender, RoutedEventArgs e)
{
const double MAXMULT = 2;
try
{
var dialog = new Microsoft.Win32.OpenFileDialog();
dialog.Multiselect = false;
dialog.Title = "Please select an image";
bool?result = dialog.ShowDialog();
if (result == null || !result.Value)
{
return;
}
_origConv = UtilityWPF.ConvertToConvolution(new BitmapImage(new Uri(dialog.FileName)));
lblOrigWidth.Text = _origConv.Width.ToString("N0");
lblOrigHeight.Text = _origConv.Height.ToString("N0");
double max = Math.Max(_origConv.Width, _origConv.Height) * MAXMULT;
trkWidth.Minimum = _origConv.Width;
trkWidth.Maximum = max;
trkWidth.Value = _origConv.Width;
trkHeight.Minimum = _origConv.Height;
trkHeight.Maximum = max;
trkHeight.Value = _origConv.Height;
_timer.IsEnabled = false; // touching the sliders causes the timer to be enabled
grdSize.Visibility = Visibility.Visible;
ShowConvolution(_origConv);
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString(), this.Title, MessageBoxButton.OK, MessageBoxImage.Error);
}
}
