private void connected_area()
{
Bit = (Bitmap)ConvertedImage.Image.Clone();
int capacity = Bit.Height * Bit.Width;
queue_i = new Queue <int>(capacity);
queue_j = new Queue <int>(capacity);
countt = new int[capacity];
visited = new bool[Bit.Width + 5][];
#region initialization of visited boolean array
for (int i = 0; i < Bit.Width + 5; i++)
{
visited[i] = new bool[Bit.Height + 5];
for (int j = 0; j < Bit.Height + 5; j++)
{
visited[i][j] = false;
}
}
#endregion
big = new int[Bit.Width + 5][];
#region initialization of count region array
for (int i = 0; i < Bit.Width + 5; i++)
{
big[i] = new int[Bit.Height + 5];
for (int j = 0; j < Bit.Height + 5; j++)
{
big[i][j] = 0;
}
}
#endregion
int max = 0, max_bit = 0;
count_region = 1;
for (int i = 0; i < Bit.Width; i++)
{
for (int j = 0; j < Bit.Height; j++)
{
if (!visited[i][j] && (Bit.GetPixel(i, j).R == 0 && Bit.GetPixel(i, j).G == 0 && Bit.GetPixel(i, j).B == 0))
{
countt[count_region] = 0;
//MessageBox.Show(i+" "+j+" ");
BFS(i, j);
if (max < countt[count_region])
{
max = countt[count_region];
max_bit = count_region;
//MessageBox.Show(max+" ");
}
count_region++;
}
}
}
Bitmap bmp = new Bitmap(ConvertedImage.Image.Width, ConvertedImage.Image.Height);
int min_x = Bit.Width;
int max_x = 0;
int max_y = 0;
int min_y = Bit.Height;
//MessageBox.Show(max_bit.ToString());
for (int i = 0; i < Bit.Width; i++)
{
for (int j = 0; j < Bit.Height; j++)
{
if (big[i][j] == max_bit)
{
bmp.SetPixel(i, j, Bit.GetPixel(i, j));
#region calculating max min x and y of shorted image frame
if (min_x >= i)
{
min_x = i;
}
if (max_x < i)
{
max_x = i;
}
if (min_y >= j)
{
min_y = j;
}
if (max_y < j)
{
max_y = j;
}
#endregion
}
else
{
bmp.SetPixel(i, j, System.Drawing.Color.White);
}
}
}
//pictureBox2.Image = (Image)bmp;
//MessageBox.Show("d");
//bmp = shape((Bitmap)bmp.Clone());
//pictureBox2.Image = (Image)bmp;
//pictureBox2.Invalidate();
//MessageBox.Show("d");
int w, h, t;
double a, p;
int flagforidentification = 0;
if (max_x - min_x >= 30 && max_y - min_x >= 30)
{
min_x = min_x - 30;
min_y = min_y - 30;
max_x = max_x + 30;
max_y = max_y + 30;
flagforidentification = 1;
}
if (min_x < 0)
{
min_x = 0;
}
if (min_y < 0)
{
min_y = 0;
}
if (max_x > Bit.Width)
{
max_x = Bit.Width;
}
if (max_y > Bit.Height)
{
max_y = Bit.Height;
}
a = max_x - min_x;
p = a * 0.12;
t = Convert.ToInt16(p);
if (flagforidentification == 1)
{
max_x -= t;
min_x += t;
min_y += t;
}
a = max_x - min_x;
w = Convert.ToInt16(a);
h = Convert.ToInt16(w * 1.5);
// MessageBox.Show(w.ToString());
if (h + min_y > max_y)
{
h = max_y - min_y;
}
Bitmap bbbb = new Bitmap(w, h);
Bitmap pic1 = (Bitmap)InputImage.Image.Clone();
ConvertedImage.Image = System.Drawing.Image.FromFile(file_name);
Bitmap fre = (Bitmap)ConvertedImage.Image;
for (int i = min_x; i < max_x; i++)
{
for (int j = min_y; j < min_y + h; j++)
{
//if(bmp.GetPixel(i,j).B==0)
bbbb.SetPixel(i - min_x, j - min_y, fre.GetPixel(i, j));
////// bbbb.SetPixel(i - min_x, j - min_y, pic1.GetPixel(i, j));
pic1.SetPixel(i, j, System.Drawing.Color.Black);
//else
//bbbb.SetPixel(i - min_x, j - min_y, Color.White);
}
}
//bbbb = shape((Bitmap)bbbb.Clone());
ConvertedImage.Image = (Bitmap)bbbb;
ConvertedImage.Invalidate();
InputImage.Image = (System.Drawing.Image)pic1;
queue_i.Clear();
queue_j.Clear();
}
private void skin_color_segmentation()
{
Bitmap bm = (Bitmap)InputImage.Image;
Bitmap bmp = new Bitmap(InputImage.Image.Width, InputImage.Image.Height);
double tot_pixel = bm.Height * bm.Width;
tot_pixel /= 100;
tot_pixel *= 10;
int min_x = bm.Width + 5;// Convert.ToInt16(tot_pixel);
int max_x = 0;
int max_y = 0;
int min_y = bm.Height + 5;// Convert.ToInt16(tot_pixel);
System.Drawing.Color color = new System.Drawing.Color();
double g, r, avg = 0;
double f_upper, f_lower, w;
bool R1, R3, R4, s;
double c, cr, cb;
R1 = R3 = R4 = s = false;
cr_start = 140;
cr_end = 170;
cb_start = 105;
cb_end = 150;
for (int i = 0; i < bm.Width; i++)
{
for (int j = 0; j < bm.Height; j++)
{
color = bm.GetPixel(i, j);
r = Convert.ToDouble(color.R) / Convert.ToDouble(color.R + color.G + color.B);
g = Convert.ToDouble(color.G) / Convert.ToDouble(color.R + color.G + color.B);
f_upper = -1.3767 * r * r + 1.0743 * r + 0.1452;
f_lower = -0.776 * r * r + 0.5601 * r + 0.1766;
if (g > f_lower && g < f_upper)
{
R1 = true;
}
else
{
R1 = false;
}
w = Math.Pow((r - 0.33), 2) + Math.Pow((g - 0.33), 2);
//avg += w;
//MessageBox.Show(w.ToString());
if (w <= 0.0004)
{
avg++;
}
if (color.R > color.G && color.G > color.B)
{
R3 = true;
}
else
{
R3 = false;
}
if ((color.R - color.G) >= 45)
{
R4 = true;
}
else
{
R4 = false;
}
if (R3 && R4)//&& R1 && !R2)//if(R1 && R2)//
{
s = true;
}
else
{
s = false;
}
c = 0.257 * Convert.ToDouble(color.R) + 0.504 * color.G + 0.098 * color.B + 16;
cb = 0.148 * Convert.ToDouble(color.R) - 0.291 * Convert.ToDouble(color.G) + 0.439 * Convert.ToDouble(color.B) + 128;
cr = 0.439 * Convert.ToDouble(color.R) - 0.368 * Convert.ToDouble(color.G) - 0.071 * Convert.ToDouble(color.B) + 128;
if (s)
{
bmp.SetPixel(i, j, System.Drawing.Color.Black);
R1 = R3 = R4 = s = false;
#region finding face rectangle
/*
* finding the minimum co-ordinate and maximum co-ordinate xy
* of the image between the Cb and Cr threshold value region
*/
if (i < bm.Width / 2 && i < min_x)
{
min_x = i;
}
if ((i >= bm.Width / 2 && i < bm.Width) && i > max_x)
{
max_x = i;
}
if (j < bm.Height / 2 && j < min_y)
{
min_y = j;
}
if ((j >= bm.Height / 2 && i < bm.Height) && j > max_y)
{
max_y = j;
}
#endregion
}
else
{
bmp.SetPixel(i, j, System.Drawing.Color.White);
}
}
}
ConvertedImage.Image = (Bitmap)bmp;
ConvertedImage.Invalidate();
//MessageBox.Show("End");
}