public void Execute()
{
string test = "";
DCT dd = new DCT(ImgIn.Width, ImgIn.Height);
var t = dd.BitmapToMatrices(ImgIn);
DCT d = new DCT(8, 8);
int height = ImgIn.Height - ImgIn.Height % 8;
int width = ImgIn.Width - ImgIn.Width % 8;
for (int i = 0; i < height; i += 8)
{
for (int j = 0; j < width; j += 8)
{
double[,] r = new double[8, 8];
for (int q = 0; q < 8; q++)
{
for (int e = 0; e < 8; e++)
{
r[e, q] = t[0][j + e, i + q];
}
}
r = d.DCT2D(r);
if (r[7, 7] < 0)
{
test += "0";
}
else
{
test += "1";
}
}
}
// Check mark
for (int i = 0; i < 8; i++)
{
Mark = BinaryToString(test);
int count = 0;
foreach (var item in Mark)
{
if (Char.IsLetterOrDigit(item))
{
count++;
}
}
if (count > Mark.Length / 5)
{
break;
}
Mark = "None";
}
}
public void Execute()
{
DCT dd = new DCT(ImgIn.Width, ImgIn.Height);
var t = dd.BitmapToMatrices(ImgIn);
DCT d = new DCT(8, 8);
int h = ImgIn.Height - ImgIn.Height % 8;
int w = ImgIn.Width - ImgIn.Width % 8;
int c = 0;
for (int i = 0; i < h; i += 8)
{
for (int j = 0; j < w; j += 8)
{
double[,] r = new double[8, 8];
for (int q = 0; q < 8; q++)
{
for (int e = 0; e < 8; e++)
{
r[e, q] = t[0][j + e, i + q];
}
}
r = d.DCT2D(r);
r[7, 7] = Robustness;
if (Mark[c] == '0')
{
r[7, 7] = -Robustness;
}
c = (c + 1) % Mark.Length;
r = d.IDCT2D(r);
for (int q = 0; q < 8; q++)
{
for (int e = 0; e < 8; e++)
{
t[0][j + e, i + q] = r[e, q];
}
}
}
}
ImgOut = dd.MatricesToBitmap(t);
}