public Treshold(ImageWindow iw)
{
InitializeComponent();
this.iw = iw;
MdiParent = iw.MdiParent;
Text = Text + " " + iw.Text;
HistogramImage.Image = new Bitmap(HistogramImage.Width, HistogramImage.Height);
LUT = (UInt32[,])iw.LUT.Clone();
max = 0;
for (int i = 0; i < 256; i++)
{
if (LUT[0, i] > max) max = LUT[0, i];
if (LUT[1, i] > max) max = LUT[1, i];
if (LUT[2, i] > max) max = LUT[2, i];
if (LUT[3, i] > max) max = LUT[3, i];
}
prevImg = iw.getBitmap();
iw.Treshold(ZipVal.Value,Reverse.Checked);
hHeight = HistogramImage.Height;
hWidth = HistogramImage.Width;
x_scale = ((float)hWidth - 10.0F) / 256.0F;
y_scale = ((float)hHeight - 15.0F) / (float)max;
DrawHistogram();
Show();
}
private void DrawHistogram(object sender = null, EventArgs e = null)
{
HistogramImage.Image.Dispose();
HistogramImage.Image = new Bitmap(HistogramImage.Width, HistogramImage.Height);
Graphics gr = Graphics.FromImage(HistogramImage.Image);
Pen Pen_R = new Pen(new SolidBrush(Color.FromArgb(100, 255, 0, 0)), x_scale);
Pen Pen_G = new Pen(new SolidBrush(Color.FromArgb(100, 0, 255, 0)), x_scale);
Pen Pen_B = new Pen(new SolidBrush(Color.FromArgb(100, 0, 0, 255)), x_scale);
Pen Pen_Grey = new Pen(new SolidBrush(Color.FromArgb(100, 150, 150, 150)), x_scale);
Brush red_brush = new SolidBrush(Color.FromArgb(100, 200, 0, 0));
Pen red = new Pen(red_brush);
gr.DrawLine(red, 5, HistogramImage.Height - 9, HistogramImage.Width - 5, HistogramImage.Height - 9);
gr.DrawString("0", new Font("Arial", 7), red_brush, new PointF(1.0F, hHeight - 10));
gr.DrawString("255", new Font("Arial", 7), red_brush, new PointF(hWidth - 17, hHeight - 10));
gr.DrawLine(red, 5, HistogramImage.Height - 9, HistogramImage.Width - 5, HistogramImage.Height - 9);
gr.DrawString("0", new Font("Arial", 7), red_brush, new PointF(1.0F, hHeight - 10));
gr.DrawString("255", new Font("Arial", 7), red_brush, new PointF(hWidth - 17, hHeight - 10));
int val = int.Parse(Level.Text);
for (int i = 0; i < 256; i++)
{
if (Reverse.Checked)
{
if (i < val)
{
gr.DrawLine(new Pen(Color.FromArgb(100, 150, 150, 150)), i * x_scale + 5, hHeight - 10, i * x_scale + 5, (float)(hHeight - 10 - (float)((float)LUT[3, i] * y_scale)));
}
else
{
gr.DrawLine(new Pen(Color.OrangeRed), i * x_scale + 5, hHeight - 10, i * x_scale + 5, (float)(hHeight - 10 - (float)((float)LUT[3, i] * y_scale)));
}
}
else
{
if (i <= val)
{
gr.DrawLine(new Pen(Color.OrangeRed), i * x_scale + 5, hHeight - 10, i * x_scale + 5, (float)(hHeight - 10 - (float)((float)LUT[3, i] * y_scale)));
}
else
{
gr.DrawLine(new Pen(Color.FromArgb(100, 150, 150, 150)), i * x_scale + 5, hHeight - 10, i * x_scale + 5, (float)(hHeight - 10 - (float)((float)LUT[3, i] * y_scale)));
}
}
}
iw.setBitmap(prevImg);
iw.Treshold(val, Reverse.Checked);
HistogramImage.Invalidate();
gr.Dispose();
}
public Treshold(ImageWindow iw)
{
InitializeComponent();
this.iw = iw;
MdiParent = iw.MdiParent;
Text = Text + " " + iw.Text;
HistogramImage.Image = new Bitmap(HistogramImage.Width, HistogramImage.Height);
LUT = (UInt32[, ])iw.LUT.Clone();
max = 0;
for (int i = 0; i < 256; i++)
{
if (LUT[0, i] > max)
{
max = LUT[0, i];
}
if (LUT[1, i] > max)
{
max = LUT[1, i];
}
if (LUT[2, i] > max)
{
max = LUT[2, i];
}
if (LUT[3, i] > max)
{
max = LUT[3, i];
}
}
prevImg = iw.getBitmap();
iw.Treshold(ZipVal.Value, Reverse.Checked);
hHeight = HistogramImage.Height;
hWidth = HistogramImage.Width;
x_scale = ((float)hWidth - 10.0F) / 256.0F;
y_scale = ((float)hHeight - 15.0F) / (float)max;
DrawHistogram();
Show();
}
