private void NoiseButton_Click(object sender, RoutedEventArgs e)
{
if (!int.TryParse(NoiseValueTextBox.Text, out _noiseValue))
{
MessageBox.Show("Bad noise value!");
return;
}
Bitmap bitmap = BitmapConverter.BitmapImage2Bitmap(_sourceImage);
var random = new Random();
var pointsHashSet = new HashSet <Point>();
int pixelsToInvert = _pixelsNumber * _noiseValue / 100;
for (int i = 0; i < pixelsToInvert; i++)
{
bool wasInverted = false;
while (!wasInverted)
{
Point point;
point.X = random.Next(0, _width);
point.Y = random.Next(0, _height);
if (pointsHashSet.Add(point))
{
Color curColor = bitmap.GetPixel(point.X, point.Y);
bitmap.SetPixel(point.X, point.Y, curColor.R > 230 ? Color.Black : Color.White);
wasInverted = true;
}
}
}
_noisedImage = BitmapConverter.Bitmap2BitmapImage(bitmap);
SourceImage.Source = _noisedImage;
}
private void RecognizeButton_Click(object sender, RoutedEventArgs e)
{
_knowledgeMatrix = new int[_pixelsNumber, _pixelsNumber];
foreach (var stdVector in _standardImageVectors)
{
for (int i = 0; i < _pixelsNumber; i++)
{
for (int j = 0; j < _pixelsNumber; j++)
{
_knowledgeMatrix[j, i] += (i == j) ? 0 : stdVector[j] * stdVector[i];
}
}
}
Bitmap sourceBitmap = BitmapConverter.BitmapImage2Bitmap(_noisedImage);
int[] sourceImageVector = GetImageVector(sourceBitmap);
int counter = 0;
int[] temp = new int[_pixelsNumber];
while (true)
{
temp = Copy(sourceImageVector);
sourceImageVector = MultiplyMatrixAndColumn(_knowledgeMatrix, sourceImageVector);
counter++;
if (IsEqual(temp, sourceImageVector))
{
ResultImage.Source = BitmapConverter.Bitmap2BitmapImage(GetImageFromVector(sourceImageVector));
MessageBox.Show("Iterations" + counter.ToString());
return;
}
}
}
