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private void btnQuantize_Click(object sender, EventArgs e)
{
int K = (int)ClusterK.Value; // -> O(1)
txtDisColor.Text = ImageAnalytics.Find_Distinct_Color(ImageMatrix).ToString(); // -> O(W*H)
txtMST.Text = (Math.Round(ImageAnalytics.MinimumSpanningTree(), 2)).ToString(); // -> O(E Log V)
DetectNumOfClusters x = new DetectNumOfClusters(ImageAnalytics.edges); // -> O(E*V)
if (K == 0)
{
K = x.k; // -> O(1)
}
QuantizeImage.Extract_K_Cluster(K); // -> O(K*D)
QuantizeImage.Find_K_Cluster(); // -> O(D)
ImageOperations.DisplayImage(ImageMatrix, PostImage, 1); //O(N^2) where N is the height or the weight of image
ClusterK.Value = K; // print the number of cluster if changed // -> O(1)
}
private void btnQuantize_Click(object sender, EventArgs e)
{
long before = System.Environment.TickCount; // get the current time in miliseconds // -> O(1)
int K = (int)ClusterK.Value; // -> O(1)
txtDisColor.Text = ImageAnalytics.Find_Distinct_Color(ImageMatrix).ToString(); // -> O(W*H)
txtMST.Text = (Math.Round(ImageAnalytics.MinimumSpanningTree(), 2)).ToString(); // -> O(E Log V)
DetectNumOfClusters x = new DetectNumOfClusters(ImageAnalytics.edges); // -> O(E*V)
if (K == 0)
{
K = x.k; // -> O(1)
}
QuantizeImage.Extract_K_Cluster(K); // -> O(K*D)
QuantizeImage.Find_K_Cluster(); // -> O(D)
ImageOperations.DisplayImage(ImageMatrix, pictureBox2, 1); //O(N^2) where N is the height or the weight of image
ClusterK.Value = K; // print the number of cluster if changed // -> O(1)
long after = System.Environment.TickCount; // get the current time // -> O(1)
double total = after - before; // Calculate the taken time // -> O(1)
total /= 60000; // convert miliseconds to minutes // -> O(1)
total = Math.Round(total, 3); // Round the Minutes to three decimal digits // -> O(1)
TimeLable.Text = total.ToString() + " M (s)"; // -> O(1)
}
/// <summary>
/// Display the given image on the given PictureBox object
/// </summary>
/// <param name="ImageMatrix">2D array that contains the image</param>
/// <param name="PicBox">PictureBox object to display the image on it</param>
/// <param name="choice">to know it should make qunatization image or simple display (0/1) </param>
public static void DisplayImage(RGBPixel[,] ImageMatrix, PictureBox PicBox, int choice) // -> O(W*H)
{
int Height = GetHeight(ImageMatrix); // -> O(1)
int Width = GetWidth(ImageMatrix); // -> O(1)
Bitmap ImageBMP = new Bitmap(Width, Height, PixelFormat.Format24bppRgb); // -> O(1)
if (choice == 1)
{
QuantizeImage.Quantize_Image(); // -> O(N)
// Create Image:
//==============
unsafe
{
BitmapData bmd = ImageBMP.LockBits(new Rectangle(0, 0, Width, Height), ImageLockMode.ReadWrite, ImageBMP.PixelFormat); // -> O(1)
int nWidth = 0; // -> O(1)
nWidth = Width * 3; // -> O(1)
int nOffset = bmd.Stride - nWidth; // -> O(1)
byte *p = (byte *)bmd.Scan0; // -> O(1)
for (int i = 0; i < Height; i++) // -> O(Height) * O(Width) --->> (H*W)
{
for (int j = 0; j < Width; j++) // -> O(Width) * O(1)
{
p[2] = QuantizeImage.final_image[ImageMatrix[i, j].red, ImageMatrix[i, j].green, ImageMatrix[i, j].blue].red;
p[1] = QuantizeImage.final_image[ImageMatrix[i, j].red, ImageMatrix[i, j].green, ImageMatrix[i, j].blue].green;
p[0] = QuantizeImage.final_image[ImageMatrix[i, j].red, ImageMatrix[i, j].green, ImageMatrix[i, j].blue].blue;
p += 3; // -> O(1)
}
p += nOffset; // -> O(1)
}
ImageBMP.UnlockBits(bmd); // -> O(1)
}
}
else
{
unsafe
{
BitmapData bmd = ImageBMP.LockBits(new Rectangle(0, 0, Width, Height), ImageLockMode.ReadWrite, ImageBMP.PixelFormat); // -> O(1)
int nWidth = 0; // -> O(1)
nWidth = Width * 3; // -> O(1)
int nOffset = bmd.Stride - nWidth; // -> O(1)
byte *p = (byte *)bmd.Scan0; // -> O(1)
for (int i = 0; i < Height; i++) // -> O(Height) * O(Width) --->> (H*W)
{
for (int j = 0; j < Width; j++) // -> O(Width) * O(1)
{
p[2] = ImageMatrix[i, j].red; // -> O(1)
p[1] = ImageMatrix[i, j].green; // -> O(1)
p[0] = ImageMatrix[i, j].blue; // -> O(1)
p += 3; // -> O(1)
}
p += nOffset; // -> O(1)
}
ImageBMP.UnlockBits(bmd); // -> O(1)
}
}
PicBox.Image = ImageBMP; // -> O(1)
}
