private void Negation_Click(object sender, EventArgs e)
{
for (int i = 0; i < pictureBox1.Image.Width; i++)
{
for (int j = 0; j < pictureBox1.Image.Height; j++)
{
Color newColor = picture.Bitmap.GetPixel(i, j);
newColor = Color.FromArgb(NumberNormalizer.Normalize(255 - newColor.R), NumberNormalizer.Normalize(255 - newColor.G), NumberNormalizer.Normalize(255 - newColor.B));
picture.Bitmap.SetPixel(i, j, newColor);
}
}
pictureBox1.Refresh();
}
private void brightness_Click(object sender, EventArgs e)
{
int constant = Convert.ToInt32(brightnessTextBox.Text);
for (int i = 0; i < pictureBox1.Image.Width; i++)
{
for (int j = 0; j < pictureBox1.Image.Height; j++)
{
Color newColor = picture.Bitmap.GetPixel(i, j);
newColor = Color.FromArgb(NumberNormalizer.Normalize(newColor.R + constant), NumberNormalizer.Normalize(newColor.G + constant), NumberNormalizer.Normalize(newColor.B + constant));
picture.Bitmap.SetPixel(i, j, newColor);
}
}
pictureBox1.Refresh();
}
private int[,] createNeighbours(int i, int j)
{
int[,] neighbours = new int[Kernel.MAXINDEX, Kernel.MAXINDEX];
for (int x = 0; x < currentKernel.sizeX; x++)
{
for (int y = 0; y < currentKernel.sizeY; y++)
{
neighbours[x, y] = picture.Bitmap.GetPixel(
NumberNormalizer.Normalize(i - currentKernel.anchor.Item1 + x, picture.Bitmap.Width),
NumberNormalizer.Normalize(j - currentKernel.anchor.Item2 + y, picture.Bitmap.Height)
).ToArgb();
}
}
return(neighbours);
}
private void Contrast_Click(object sender, EventArgs e)
{
double constant = Convert.ToDouble(ContrastTextBox.Text);
for (int i = 0; i < pictureBox1.Image.Width; i++)
{
for (int j = 0; j < pictureBox1.Image.Height; j++)
{
Color newColor = picture.Bitmap.GetPixel(i, j);
newColor = Color.FromArgb(NumberNormalizer.Normalize(Math.Pow(newColor.R, constant)),
NumberNormalizer.Normalize(Math.Pow(newColor.G, constant)),
NumberNormalizer.Normalize(Math.Pow(newColor.B, constant)));
picture.Bitmap.SetPixel(i, j, newColor);
}
}
pictureBox1.Refresh();
}
private void applyContrastButton_Click(object sender, EventArgs e)
{
double constant = Convert.ToDouble(TrueContrastTextBox.Text);
Bitmap newImage = new Bitmap(picture.Bitmap.Width, picture.Bitmap.Height);
for (int i = 0; i < pictureBox1.Image.Width; i++)
{
for (int j = 0; j < pictureBox1.Image.Height; j++)
{
Color newColor = picture.Bitmap.GetPixel(i, j);
newColor = Color.FromArgb(NumberNormalizer.Normalize((newColor.R - 127) * constant + 127), NumberNormalizer.Normalize((newColor.G - 127) * constant + 127), NumberNormalizer.Normalize((newColor.B - 127) * constant + 127));
newImage.SetPixel(i, j, newColor);
}
}
picture.Bitmap = newImage;
pictureBox1.Image = newImage;
pictureBox1.Refresh();
}
public int calculate(int[,] neighbours)
{
int valR = 0;
int valG = 0;
int valB = 0;
for (int i = 0; i < sizeX; i++)
{
for (int j = 0; j < sizeY; j++)
{
Color pix = Color.FromArgb(neighbours[i, j]);
valR += kernel[i, j] * pix.R;
valG += kernel[i, j] * pix.G;
valB += kernel[i, j] * pix.B;
}
}
valR = NumberNormalizer.Normalize(valR / divisor + offset);
valG = NumberNormalizer.Normalize(valG / divisor + offset);
valB = NumberNormalizer.Normalize(valB / divisor + offset);
Color pixel = Color.FromArgb(valR, valG, valB);
return(pixel.ToArgb());
}