private void equalizationHistogramToolStripMenuItem_Click(object sender, EventArgs e)
{
if (pbInput.Image == null)
{
MessageBox.Show("Error!! Empty Input Image");
}
else
{
Dictionary <byte, double> histoR = new Dictionary <byte, double>();
Dictionary <byte, double> histoG = new Dictionary <byte, double>();
Dictionary <byte, double> histoB = new Dictionary <byte, double>();
Bitmap image1 = new Bitmap(pbInput.Image);
pbOutput.Image = image1;
int baris, kolom;
CHistogram frm3 = new CHistogram(); //RGB
GSHistogram frm2 = new GSHistogram(); //Grayscale
byte c1, c2, c3;
double[] s1 = new double[256];
double[] s2 = new double[256];
double[] s3 = new double[256];
double jum = 0;
//Proses inisiasi nilai awal histogram
for (int counter = 0; counter <= 255; counter++)
{
histoR[(Byte)counter] = 0.0;
histoG[(Byte)counter] = 0.0;
histoB[(Byte)counter] = 0.0;
}
// Proses mendapatkan nilai histogram
for (baris = 0; baris < image1.Width; baris++)
{
for (kolom = 0; kolom < image1.Height; kolom++)
{
c1 = image1.GetPixel(baris, kolom).R;
c2 = image1.GetPixel(baris, kolom).G;
c3 = image1.GetPixel(baris, kolom).B;
if (histoR.ContainsKey(c1))
{
histoR[c1] += 1;
}
if (histoG.ContainsKey(c2))
{
histoG[c2] += 1;
}
if (histoB.ContainsKey(c3))
{
histoB[c3] += 1; //kerja histogram
}
}
}
//Proses menghitung nilai transform function,
List <byte> kunci1 = histoR.Keys.ToList();
List <byte> kunci2 = histoG.Keys.ToList();
List <byte> kunci3 = histoB.Keys.ToList();
foreach (byte key in kunci1)
{
histoR[key] = histoR[key] / (image1.Width * image1.Height);
jum += 255 * histoR[key];
s1[key] = jum;
}
jum = 0;
foreach (byte key in kunci2)
{
histoG[key] = histoG[key] / (image1.Width * image1.Height);
jum += 255 * histoG[key];
s2[key] = jum;
}
jum = 0;
foreach (byte key in kunci3)
{
histoB[key] = histoB[key] / (image1.Width * image1.Height);
jum += 255 * histoB[key];
s3[key] = jum;
}
progressBar1.Show();
//Proses mengubah nilai pixel ke nilai baru sesuai transform function
for (baris = 0; baris < image1.Width; baris++)
{
for (kolom = 0; kolom < image1.Height; kolom++)
{
c1 = image1.GetPixel(baris, kolom).R;
c2 = image1.GetPixel(baris, kolom).G;
c3 = image1.GetPixel(baris, kolom).B;
int s = Convert.ToInt16(s1[c1]);
int ss = Convert.ToInt16(s2[c2]);
int sss = Convert.ToInt16(s3[c3]);
image1.SetPixel(baris, kolom, Color.FromArgb(s, ss, sss));
}
progressBar1.Value = Convert.ToInt32(Math.Floor((double)(100 * (baris + 1) /
image1.Width)));
}
progressBar1.Hide();
pbOutput.Refresh();
}
}
private void outputToolStripMenuItem1_Click(object sender, EventArgs e)
{
if (pbOutput.Image == null)
{
MessageBox.Show("Tidak ada citra yang akan diolah");
}
else
{
Dictionary <int, double> HistoR = new Dictionary <int, double>();
Dictionary <int, double> HistoG = new Dictionary <int, double>();
Dictionary <int, double> HistoB = new Dictionary <int, double>();
Bitmap b = new Bitmap((Bitmap)this.pbOutput.Image);
GSHistogram frm7 = new GSHistogram();
CHistogram frm8 = new CHistogram();
for (int h = 0; h <= 255; h++)
{
HistoR.Add(h, 0);
HistoG.Add(h, 0);
HistoB.Add(h, 0);
}
for (int i = 0; i < b.Width; i++)
{
for (int j = 0; j < b.Height; j++)
{
Color c1 = b.GetPixel(i, j); //jika pada baris i kolom j, pixel bernilai n, maka nilai n pada dictionary ditambah 1
for (int k = 0; k <= 255; k++)
{
if (c1.G == k)
{
HistoG[k] = HistoG[k] + 1;
}
if (c1.R == k)
{
HistoR[k] = HistoR[k] + 1;
}
if (c1.B == k)
{
HistoB[k] = HistoB[k] + 1;
}
}
}
progressBar1.Value = Convert.ToInt16(100 * (i + 1) / b.Width);
}
progressBar1.Visible = false;
frm7.chartGSHistogram.ChartAreas["ChartArea1"].AxisX.LabelStyle.Enabled = false;
frm7.chartGSHistogram.ChartAreas["ChartArea1"].AxisY.LabelStyle.Enabled = false;
frm8.chartR.ChartAreas["ChartArea1"].AxisX.LabelStyle.Enabled = false;
frm8.chartR.ChartAreas["ChartArea1"].AxisY.LabelStyle.Enabled = false;
frm8.chartG.ChartAreas["ChartArea1"].AxisX.LabelStyle.Enabled = false;
frm8.chartG.ChartAreas["ChartArea1"].AxisY.LabelStyle.Enabled = false;
frm8.chartB.ChartAreas["ChartArea1"].AxisX.LabelStyle.Enabled = false;
frm8.chartB.ChartAreas["ChartArea1"].AxisY.LabelStyle.Enabled = false;
if (HistoR.Count == HistoG.Count && !HistoR.Except(HistoG).Any())
{
frm7.chartGSHistogram.Series["Series1"].Color = Color.Gray;
frm7.chartGSHistogram.Series[0].Points.DataBindXY(HistoR.Keys, HistoR.Values);
frm7.ShowDialog();
}
else
{
frm8.chartR.Series["Series1"].Color = Color.Red;
frm8.chartG.Series["Series1"].Color = Color.Green;
frm8.chartB.Series["Series1"].Color = Color.Blue;
frm8.chartR.Series[0].Points.DataBindXY(HistoR.Keys, HistoR.Values);
frm8.chartG.Series[0].Points.DataBindXY(HistoG.Keys, HistoG.Values);
frm8.chartB.Series[0].Points.DataBindXY(HistoB.Keys, HistoB.Values);
frm8.ShowDialog();
}
}
}
