//load images
public void imreadall()
{
string Location = "C:\\major\\";
for (int i = 1; i <= trainData; i++)
{
int j = 0;
Bitmap alphaBmp = (Bitmap)Image.FromFile(String.Concat(Location, Convert.ToString(i), ".jpg"));
Bitmap bmp = ImageProcessingUtilities.emguCVconvert2Grayscale(alphaBmp);
ImageProcessingUtilities.hist_equalize(bmp);
BitmapData bmData = bmp.LockBits(new Rectangle(0, 0, bmp.Width, bmp.Height), ImageLockMode.ReadWrite, bmp.PixelFormat);
unsafe
{
byte *p = (byte *)(void *)bmData.Scan0.ToPointer();
int stopAddress = (int)p + bmData.Stride * bmData.Height;
while ((int)p != stopAddress)
{
// if (i==3) continue;
C[j, i - 1] = p[0];
//images.SetValue(p[0], j, i - 1);
j++;
p++;
}
p = null;
j = 0;
}
bmp.UnlockBits(bmData);
}
}
public static Bitmap getCroppedFace(Bitmap rawFrame, Rectangle faceRect)
{
int newFHeight = ((faceRect.Width) / 3) * 4;
int gap = newFHeight - faceRect.Height;
int top = 0;
if ((faceRect.Top - (gap / 2)) > 0)
{
top = faceRect.Top - (gap / 2);
}
if ((faceRect.Top - (gap / 2) + newFHeight) > 480)
{
top = faceRect.Top - gap;
}
Rectangle face4isto3 = new Rectangle(faceRect.Left, top, faceRect.Width, newFHeight);
Bitmap cFace = null;
try
{
if (rawFrame != null)
{
Bitmap face_rgb = ImageProcessingUtilities.Resize((ImageProcessingUtilities.Crop(rawFrame, face4isto3)), 76, 101);
//note: calling other grayscale convertion function causes recognition algorithm to stop working
// So we call emguCV inbuild grayscale convertion function in ImageProcessingUtilities class
//cFace =ImageProcessingUtilities.norm_rgb(ImageProcessingUtilities.emguCVconvert2Grayscale(face_rgb));
//cFace = face_rgb;
cFace = ImageProcessingUtilities.emguCVconvert2Grayscale(face_rgb);
}
}
catch (Exception ex)
{
//MessageBox.Show(ex.Message);
}
return(cFace);
}
