public void Copy(CImage inp, bool full)
// Copies the image "inp" into "this". If full==false then the array "Grid"
// will be alloced but its content will not be copied.
{
int i, size;
if (inp.N_Bits == 8)
{
size = inp.width * inp.height;
}
else
{
size = 3 * inp.width * inp.height;
}
N_Bits = inp.N_Bits;
width = inp.width;
height = inp.height;
Grid = new byte[size];
Lab = new int[size];
if (full)
{
for (i = 0; i < size; i++)
{
Grid[i] = inp.Grid[i];
}
}
}
} //********************************* end DarkNoise *******************************
public int LightNoise(ref CImage Image, int MinGV, int MaxGV, int MALS, Form1 fm1)
{
bool COLOR = (Image.N_Bits == 24);
int ind3 = 0, Label2, Lum, rv = 0;
if (MALS == 0)
{
return(0);
}
int cnt = 0;
int Len = Image.width * Image.height, jump, nStep = 25;
if (Len > 2 * nStep)
{
jump = Len / nStep;
}
else
{
jump = 2;
}
fm1.progressBar1.Step = 1;
for (int light = MinGV; light <= 255; light++) //=========================================
{
int index;
for (int i = 0; i < nPixel[light]; i++) //========================================
{
cnt++;
if ((cnt % jump) == jump - 1)
{
fm1.progressBar1.PerformStep();
}
ind3 = 3 * Index[light][i];
index = Index[light][i];
if (COLOR)
{
Label2 = Image.Grid[2 + 3 * Index[light][i]] & 1;
Lum = (int)MaxC(Image.Grid[0 + ind3], Image.Grid[1 + ind3], Image.Grid[2 + ind3]);
}
else
{
Label2 = Image.Grid[Index[light][i]] & 2;
Lum = Image.Grid[Index[light][i]];
}
if (Lum == light && Label2 == 0)
{
rv = BreadthFirst_L(ref Image, i, light, MALS);
}
} //============================= end for (int i.. =======================
} //=============================== end for (int light.. ========================
return(rv);
} //********************************* end LightNoise ******************************
} //****************************** end BitmapToImage ****************************************
public void BitmapToImageOld(Bitmap bmp, CImage Image)
{
int nbyteIm = Image.N_Bits / 8;
if (bmp.PixelFormat != PixelFormat.Format24bppRgb &&
bmp.PixelFormat != PixelFormat.Format8bppIndexed)
{
MessageBox.Show("BitmapToGridOld: Not suitable pixel format=" + bmp.PixelFormat);
return;
}
Color color;
for (int y = 0; y < bmp.Height; y++)
{
int y1 = nLoop * bmp.Height / denomProg;
if (y % y1 == 0)
{
progressBar1.PerformStep();
}
for (int x = 0; x < bmp.Width; x++)
{
int i = x + width * y;
color = bmp.GetPixel(x, y);
if (nbyteIm == 1)
{
Image.Grid[i] = MaxC(color.R, color.G, color.B);
}
else // nbyteIm == 3
{
for (int c = 0; c < nbyteIm; c++)
{
if (c == 0)
{
Image.Grid[nbyteIm * i] = color.B;
}
if (c == 1)
{
Image.Grid[nbyteIm * i + 1] = color.G;
}
if (c == 2)
{
Image.Grid[nbyteIm * i + 2] = color.R;
}
}
}
}
}
} //****************************** end BitmapToImageOld ****************************************
} //****************************** end Open image ****************************************
private void button4_Click(object sender, EventArgs e) // Segment
{
if (ORIG == false)
{
MessageBox.Show("Please click to 'Open image' and open an image");
return;
}
SegmentIm = new CImage(width, height, 8);
for (int light = 0; light < 256; light++)
{
SegmentIm.Palette[light] = Color.FromArgb(light, light, light);
}
SegmentIm.nLoop = 2;
SegmentIm.denomProg = denomProg;
if (OrigIm.N_Bits == 24)
{
SegmentIm.ColorToGray(OrigIm, this);
}
else
{
SegmentIm.Copy(OrigIm);
}
byte gw = OrigIm.Grid[5];
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
SegmentIm.Grid[x + width * y] /= 24;
SegmentIm.Grid[x + width * y] *= 24;
}
}
SegmentBmp = new Bitmap(width, height, PixelFormat.Format24bppRgb);
ImageToBitmap(SegmentBmp, SegmentIm);
label2.Text = " Segmented image ";
label2.Visible = true;
button2.Visible = true;
label4.Visible = true;
label5.Visible = true;
numericUpDown1.Visible = true;
numericUpDown2.Visible = true;
label6.Text = "Click 'Impulse noise'";
pictureBox2.Image = SegmentBmp;
progressBar1.Visible = false;
SEGMENT = true;
IMPULSE = false;
BREAD = false;
ROOT = false;
} //****************************** end Segment ****************************************
public int ColorToGray(CImage inp, Form1 fm1)
/* Transforms the colors of the color image "inp" in luminance=(r+g+b)/3
* and puts these values to this.Grid. --------- */
{
if (N_Bits != 8)
{
MessageBox.Show("ColorToGray: The output image has a not suitable format; N_Bits=" + N_Bits);
return(-1);
}
if (inp.N_Bits != 24)
{
MessageBox.Show("ColorToGray: The input image has a not suitable format; inp.N_Bits=" + inp.N_Bits);
return(-1);
}
int x, y;
if (inp.N_Bits != 24)
{
return(-1);
}
fm1.progressBar1.Value = 0;
fm1.progressBar1.Visible = true;
N_Bits = 8; width = inp.width; height = inp.height;
Grid = new byte[width * height * 8];
int y1 = 1 + nLoop * height / denomProg;
for (y = 0; y < height; y++) //=================================================
{
if ((y % y1) == 0)
{
fm1.progressBar1.PerformStep();
}
for (x = 0; x < width; x++) // =============================================
{
Grid[y * width + x] = (byte)MaxC(inp.Grid[2 + 3 * (x + width * y)],
inp.Grid[1 + 3 * (x + width * y)], inp.Grid[0 + 3 * (x + width * y)]);
} // ================= end for (x. ========================================
} // =================== end for (x. ==========================================
return(1);
} //********************** end ColorToGray *****************************************
} //******************************** end Sort *********************************************************
public int Neighb(CImage Image, int W, int n)
// Returns the index of the nth neighboor of the pixel with the index W. If the neighboor
// is outside the grid, then it returns -1.
{
int dx, dy, x, y, xn, yn;
if (n == 4)
{
return(-1);
}
yn = y = W / Image.width;
xn = x = W % Image.width;
dx = (n % 3) - 1;
dy = n / 3 - 1;
xn += dx;
yn += dy;
if (xn < 0 || xn >= Image.width || yn < 0 || yn >= Image.height)
{
return(-2);
}
return(xn + Image.width * yn);
}
public void Copy(CImage inp)
{
if (N_Bits != inp.N_Bits)
{
MessageBox.Show("Copy: The formats of input and output are not equal. input.N_Bits="
+ inp.N_Bits + "; ouput.N_Bits=" + N_Bits);
return;
}
width = inp.width;
height = inp.height;
N_Bits = inp.N_Bits;
if (N_Bits == 8)
{
for (int i = 0; i < 256; i++)
{
Palette[i] = inp.Palette[i];
}
}
for (int i = 0; i < width * height * N_Bits / 8; i++)
{
Grid[i] = inp.Grid[i];
}
}
} //********************************* end LightNoise ******************************
public int BreadthFirst_L(ref CImage Image, int i, int light, int size)
// Looks for pixels with gray values >=light composing with the pixel "Index[light][i]"
// an 8-connected subset. The size of the subset must be less than "size".
// Instead of labeling the pixels of the subset, indices of pixels of the subset are saved in Comp.
// Variable "i" is the index of the starting pixel in Index[light][i];
// Pixels which are put into queue and into Comp[] are labeled in "Image.Grid(green)" by setting Bit 0 to 1.
// Pixels wich belong to a too big component and having the gray value equal to "light" are
// labeled in "Image.Grid(red)" by setting Bit 0 to 1. If such a labeled pixel is found in the while loop
// then "small" is set to 0. The insruction for breaking the loop is at the end of the loop.
{
int lightNeib, index, Label1, Label2, maxNeib = 8, Nei, nextIndex;
bool small = true;
int[] MaxBound = new int[3];
bool COLOR = (Image.N_Bits == 24);
index = Index[light][i];
for (int c = 0; c < 3; c++)
{
MaxBound[c] = -255;
}
for (int p = 0; p < size; p++)
{
Comp[p] = -1;
}
int numbPix = 0;
Comp[numbPix] = index;
numbPix++;
if (COLOR == true)
{
Image.Grid[1 + 3 * index] |= 1; // Labeling as in Comp
}
else
{
Image.Grid[index] |= 1; // Labeling as in Comp
}
Q1.input = Q1.output = 0;
Q1.Put(index); // putting index into the queue
while (!Q1.Empty()) //=== loop running while queue not empty ========================
{
nextIndex = Q1.Get();
for (int n = 0; n <= maxNeib; n++) //======== all neighbors of nextIndex ================
{
Nei = Neighb(Image, nextIndex, n); // the index of the nth neighbor of nextIndex
if (Nei < 0)
{
continue; // Nei<0 means outside the image
}
if (COLOR)
{
Label1 = Image.Grid[1 + 3 * Nei] & 1;
Label2 = Image.Grid[2 + 3 * Nei] & 1;
lightNeib = MaxC(Image.Grid[2 + 3 * Nei], Image.Grid[1 + 3 * Nei], Image.Grid[0 + 3 * Nei]) & MaskColor;
}
else
{
Label1 = Image.Grid[Nei] & 1;
Label2 = Image.Grid[Nei] & 2;
lightNeib = Image.Grid[Nei] & MaskGV;
}
if (lightNeib == light && Label2 > 0)
{
small = false;
}
if (lightNeib >= light) //------------------------------------------------------------
{
if (Label1 > 0)
{
continue;
}
Comp[numbPix] = Nei; // putting the element with index Nei into Comp
numbPix++;
if (COLOR)
{
Image.Grid[1 + 3 * Nei] |= 1; // Labeling with "1" as in Comp
}
else
{
Image.Grid[Nei] |= 1; // Labeling with "1" as in Comp
}
if (numbPix > size)
{
small = false;
break;
}
Q1.Put(Nei);
}
else // lightNeib<light
{
if (Nei != index) //-----------------------------------------------------
{
if (COLOR)
{
if (lightNeib > MaxC((byte)MaxBound[2], (byte)MaxBound[1], (byte)MaxBound[0]))
{
for (int c = 0; c < 3; c++)
{
MaxBound[c] = (Image.Grid[c + 3 * Nei] & MaskColor);
}
}
}
else
{
if (lightNeib > MaxBound[0])
{
MaxBound[0] = lightNeib;
}
}
} //------------------ end if (Nei!=index) ----------------------------
} //-------------------- end if (lightNeib<=light) and else ------------------------
} // =================== end for (n=0; .. ====================================
if (!small)
{
break;
}
} // ===================== end while ==============================================
int lightComp, nChanged = 0;
for (int m = 0; m < numbPix; m++) //========================================================
{
if (small && MaxBound[0] >= 0) //it was >-255; ----"-1" means MaxBound was not calculated ---------
{
if (COLOR == true)
{
for (int c = 0; c < 3; c++)
{
Image.Grid[c + 3 * Comp[m]] = (byte)MaxBound[c];
}
}
else
{
Image.Grid[Comp[m]] = (byte)MaxBound[0];
nChanged++;
}
}
else
{
if (COLOR == true)
{
lightComp = MaxC(Image.Grid[2 + 3 * Comp[m]], Image.Grid[1 + 3 * Comp[m]],
Image.Grid[0 + 3 * Comp[m]]) & MaskColor;
}
else
{
lightComp = Image.Grid[Comp[m]] & MaskGV;
}
if (lightComp == light) //------------------------------------------------------
{
if (COLOR == true)
{
Image.Grid[2 + 3 * Comp[m]] |= 1;
}
else
{
Image.Grid[Comp[m]] |= 2;
}
}
else
{
if (COLOR == true)
{
Image.Grid[1 + 3 * Comp[m]] &= (byte)MaskColor; // deleting label 1
Image.Grid[2 + 3 * Comp[m]] &= (byte)MaskColor; // deleting label 2
}
else
{
Image.Grid[Comp[m]] &= (byte)MaskGV; // deleting the labels
}
} //----------------------- end if (lightComp==light) and else ---------------
} //------------------------- end if (small && MaxBound[0]>0) and else ----------
} //=========================== end for (int m=0 .. ================================
return(nChanged); // numbPix;
} //************************************ end BreadthFirst_L *****************************
public int Sort(CImage Image, int[] histo, Form1 fm1)
{
Index = new int[256][];
for (int gw = 0; gw < 256; gw++)
{
Index[gw] = new int[histo[gw] + 1];
}
for (int gw = 0; gw < 256; gw++)
{
nPixel[gw] = 0;
for (int j = 0; j < histo[gw] + 1; j++)
{
Index[gw][j] = 0;
}
}
int ind;
int light;
bool COLOR;
if (Image.N_Bits == 24)
{
COLOR = true;
}
else
{
COLOR = false;
}
int Len = Image.height, jump, nStep = 25;
if (Len > 2 * nStep)
{
jump = Len / nStep;
}
else
{
jump = 2;
}
fm1.progressBar1.Value = 0;
fm1.progressBar1.Step = 1;
for (int y = 0; y < Image.height; y++) //============================================================
{
if (y % jump == jump - 1)
{
fm1.progressBar1.PerformStep();
}
for (int x = 0; x < Image.width; x++) //==========================================================
{
ind = x + y * Image.width;
if (COLOR)
{
light = MaxC(Image.Grid[3 * ind + 2], Image.Grid[3 * ind + 1],
Image.Grid[3 * ind + 0]) & 254;
}
else
{
light = Image.Grid[ind] & 252;
}
if (light < 0)
{
light = 0;
}
if (light > 255)
{
light = 255;
}
int nP = nPixel[light];
Index[light][nP] = ind;
if (nPixel[light] < histo[light])
{
nPixel[light]++;
}
} //============================ end for (int x = 0; .. ========================================
} //============================== end for (int y = 0; .. ===========================================
return(1);
} //******************************** end Sort *********************************************************
} //****************************** end ImageToBitmap ****************************************
public void ImageToBitmapOld(Bitmap bmp, CImage Image)
{
int nbyteIm = Image.N_Bits / 8;
int light = 0;
switch (bmp.PixelFormat)
{
case PixelFormat.Format24bppRgb: nbyte = 3; break;
case PixelFormat.Format8bppIndexed: nbyte = 1; break;
default: MessageBox.Show("ImageToBitmap: Not suitable pixel format=" + bmp.PixelFormat); return;
}
Color color;
int Len = bmp.Height, jump, nStep = 25;
if (Len > 2 * nStep)
{
jump = Len / nStep;
}
else
{
jump = 2;
}
for (int y = 0; y < bmp.Height; y++)
{
if (y % jump == jump - 1)
{
progressBar1.PerformStep();
}
for (int x = 0; x < bmp.Width; x++)
{
if (nbyte == 1) // nbyte of bmp;
{
if (nbyteIm == 1) // nbyteIm == 1;
{
light = (int)Image.Grid[x + bmp.Width * y];
bmp.SetPixel(x, y, Color.FromArgb(light, light, light));
}
else // nbyte == 1; nbyteIm == 3
{
bmp.SetPixel(x, y, Color.FromArgb(Image.Grid[nbyte * (x + width * y) + 2],
Image.Grid[nbyte * (x + width * y) + 1], Image.Grid[nbyte * (x + width * y) + 0]));
}
}
else // nbyte == 3
{
if (nbyteIm == 1)
{
light = Image.Grid[x + bmp.Width * y];
color = Color.FromArgb(light, light, light);
bmp.SetPixel(x, y, Color.FromArgb(light, light, light));
}
else //nbyteIm ==3; nbyte == 3
{
bmp.SetPixel(x, y, Color.FromArgb(Image.Grid[nbyteIm * (x + width * y) + 2],
Image.Grid[nbyteIm * (x + width * y) + 1], Image.Grid[nbyteIm * (x + width * y) + 0]));
} //------------------ end if (nbyteIm ==1) ------------------------
} //-------------------- end if (nbyte == 1) ----------------------------
}
}
} //****************************** end ImageToBitmapOld ****************************************/
} //****************************** end BitmapToImageOld ****************************************
public void ImageToBitmap(Bitmap bmp, CImage Image)
{
int nbyteBmp = 0, nbyteIm = Image.N_Bits / 8;
Rectangle rect = new Rectangle(0, 0, bmp.Width, bmp.Height);
BitmapData bmpData = bmp.LockBits(rect, ImageLockMode.ReadWrite, bmp.PixelFormat);
switch (bmp.PixelFormat)
{
case PixelFormat.Format24bppRgb: nbyteBmp = 3; break;
case PixelFormat.Format8bppIndexed: nbyteBmp = 1; break;
default: MessageBox.Show("ImageToBitmap: Not suitable pixel format=" + bmp.PixelFormat); return;
}
IntPtr ptr = bmpData.Scan0;
int size = bmp.Width * bmp.Height;
int bytes = Math.Abs(bmpData.Stride) * bmp.Height;
byte[] rgbValues = new byte[bytes];
byte light = 0;
Color color;
int index = 0;
progressBar1.Visible = true;
int Len = bmp.Height, jump, nStep = 50;
if (Len > 2 * nStep)
{
jump = Len / nStep;
}
else
{
jump = 2;
}
for (int y = 0; y < bmp.Height; y++)
{
if (y % jump == jump - 1)
{
progressBar1.PerformStep();
}
for (int x = 0; x < bmp.Width; x++)
{
if (nbyteBmp == 1) // nbyte of bmp;
{
if (nbyteIm == 1) // nbyteIm == 1;
{
color = (Color)Image.Palette[Image.Grid[x + bmp.Width * y]];
rgbValues[3 * (x + Math.Abs(bmpData.Stride) * y) + 0] = color.B;
rgbValues[3 * (x + Math.Abs(bmpData.Stride) * y) + 1] = color.G;
rgbValues[3 * (x + Math.Abs(bmpData.Stride) * y) + 2] = color.R;
}
else // nbyteBmp == 1; nbyteIm == 3
{
color = bmp.Palette.Entries[Image.Grid[3 * (x + bmp.Width * y)]];
rgbValues[3 * (x + Math.Abs(bmpData.Stride) * y) + 0] = color.B;
rgbValues[3 * (x + Math.Abs(bmpData.Stride) * y) + 1] = color.G;
rgbValues[3 * (x + Math.Abs(bmpData.Stride) * y) + 2] = color.R;
}
}
else // nbyteBmp == 3
{
if (nbyteIm == 1)
{
light = Image.Grid[x + Image.width * y];
{
index = 3 * x + Math.Abs(bmpData.Stride) * y;
rgbValues[index + 0] = light; // color.B;
rgbValues[index + 1] = light; // color.G;
rgbValues[index + 2] = light; // color.R;
}
}
else //nbyteIm ==3
{
for (int c = 0; c < nbyte; c++)
{
rgbValues[c + nbyte * x + Math.Abs(bmpData.Stride) * y] =
Image.Grid[c + nbyteIm * (x + bmp.Width * y)];
}
} //------------------ end if (nbyteIm ==1) ------------------------
} //-------------------- end if (nbyte == 1) ----------------------------
}
}
System.Runtime.InteropServices.Marshal.Copy(rgbValues, 0, ptr, bytes);
bmp.UnlockBits(bmpData);
} //****************************** end ImageToBitmap ****************************************
public void BitmapToImage(Bitmap bmp, CImage Image)
{
int nbyteBmp, nbyteIm;
nbyteIm = Image.N_Bits / 8;
Rectangle rect = new Rectangle(0, 0, bmp.Width, bmp.Height);
BitmapData bmpData = bmp.LockBits(rect, ImageLockMode.ReadWrite, bmp.PixelFormat);
switch (bmp.PixelFormat)
{
case PixelFormat.Format24bppRgb: nbyteBmp = 3; break;
case PixelFormat.Format8bppIndexed: nbyteBmp = 1; break;
default: MessageBox.Show("BitmapToGrid: Inappropriate pixel format=" + bmp.PixelFormat); return;
}
IntPtr ptr = bmpData.Scan0;
int Str = bmpData.Stride;
int bytes = Math.Abs(bmpData.Stride) * bmp.Height;
byte[] rgbValues = new byte[bytes];
System.Runtime.InteropServices.Marshal.Copy(ptr, rgbValues, 0, bytes);
progressBar1.Visible = true;
int y1 = 1 + bmp.Height / 100;
for (int y = 0; y < bmp.Height; y++)
{
if (y % y1 == 0)
{
progressBar1.PerformStep();
}
for (int x = 0; x < bmp.Width; x++)
{
if (nbyteBmp == 1)
{
Color color = bmp.Palette.Entries[rgbValues[x + Math.Abs(bmpData.Stride) * y]];
if (nbyteIm == 1)
{
Image.Grid[x + bmp.Width * y] = color.R;
}
else
{
Image.Grid[3 * (x + bmp.Width * y) + 0] = color.B;
Image.Grid[3 * (x + bmp.Width * y) + 1] = color.G;
Image.Grid[3 * (x + bmp.Width * y) + 2] = color.R;
}
}
else // nbyteBmp == 3
{
if (nbyteIm == 1)
{
Image.Grid[x + bmp.Width * y] = rgbValues[2 + nbyte * x + Math.Abs(bmpData.Stride) * y];
}
else // nbyteIm == 3
{
for (int c = 0; c < nbyteBmp; c++)
{
Image.Grid[c + nbyteIm * (x + bmp.Width * y)] =
rgbValues[c + nbyteBmp * x + Math.Abs(bmpData.Stride) * y];
}
}
}
}
}
bmp.UnlockBits(bmpData);
} //****************************** end BitmapToImage ****************************************
private void button1_Click(object sender, EventArgs e) // Open image
{
label1.Visible = false;
label2.Visible = false;
label3.Visible = false;
label4.Visible = false;
label5.Visible = false;
label6.Visible = false;
button2.Visible = false;
button3.Visible = false;
button4.Visible = false;
button5.Visible = false;
button6.Visible = false;
button8.Visible = false;
numericUpDown1.Visible = false;
numericUpDown2.Visible = false;
OpenFileDialog openFileDialog1 = new OpenFileDialog();
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
try
{
OrigBmp = new Bitmap(openFileDialog1.FileName);
OpenImageFile = openFileDialog1.FileName;
}
catch (Exception ex)
{
MessageBox.Show("Open image; Could not read file from disk. Error: " +
ex.Message);
}
}
else
{
return;
}
label1.Visible = true;
label3.Text = "Opened image:" + openFileDialog1.FileName;
label3.Visible = true;
button4.Visible = true;
label6.Visible = true;
label6.Text = "Click 'Segment'";
width = OrigBmp.Width;
height = OrigBmp.Height;
ORIG = true;
progressBar1.Maximum = 100;
progressBar1.Value = 0;
progressBar1.Step = 1;
nLoop = 1;
denomProg = progressBar1.Maximum / progressBar1.Step;
if (OrigBmp.PixelFormat == PixelFormat.Format8bppIndexed)
{
OrigIm = new CImage(width, height, 8);
BitmapToImageOld(OrigBmp, OrigIm);
}
else if (OrigBmp.PixelFormat == PixelFormat.Format24bppRgb)
{
OrigIm = new CImage(width, height, 24);
BitmapToImage(OrigBmp, OrigIm);
}
else
{
MessageBox.Show("Not suitable pixel format=" + OrigBmp.PixelFormat);
return;
}
pictureBox1.Image = OrigBmp;
ImpulseIm = new CImage(width, height, 8); //, Grid);
SegmentIm = new CImage(width, height, 8);
BreadthFirIm = new CImageComp(width, height, 8);
RootIm = new CImageComp(width, height, 8);
progressBar1.Value = 0;
label1.Text = " Original image ";
} //****************************** end Open image ****************************************
