// Moution Blur....................................
public static ByteBitmap WienerFilterFromMoution(ByteBitmap aBitmap, float Length, int Angle, float Nsr)
{
//make fft from abitmap
Point lStart;
ByteBitmap lLoc = FFTHelpers.FitByteBitmapForFFT2D(aBitmap, 10, out lStart, 255);
Complex[,] lFx = FFTHelpers.ByteBitmapToComplex(lLoc);
FourierTransform.FFT2(lFx, FourierTransform.Direction.Forward);
//make moution FFT
Complex[,] lHx = GetMotionComplexImage(new Size(lLoc.Width, lLoc.Height), Angle, Length);
FourierTransform.FFT2(lHx, FourierTransform.Direction.Forward);
//make wiener
Complex[,] lWR = WienerFilter(lFx, lHx, Nsr);
//backward result
FourierTransform.FFT2(lWR, FourierTransform.Direction.Backward);
//convert to bytebitmap
ByteBitmap lRes = FFTHelpers.ComplexToByteBitmap(lWR);
lRes = FFTHelpers.GetFittedByteBitmapFromFFT2D(lRes, lStart, new Size(aBitmap.Width, aBitmap.Height));
return(lRes);
}
public static ByteBitmap FitByteBitmapForFFT2D(ByteBitmap aBitmap, int Shift, out Point StartPoint, byte DefVal)
{
StartPoint = new Point(0, 0);
ByteBitmap lRes = null;
//calculate new
int lNewWidth = aBitmap.Width;
int lNewHeight = aBitmap.Height;
lNewWidth += AdditionToPowerOfTwo(lNewWidth);
lNewHeight += AdditionToPowerOfTwo(lNewHeight);
int lNewShiftX = (lNewWidth - aBitmap.Width);
int lNewShiftY = (lNewHeight - aBitmap.Height);
if (0 != DefVal)
{
lRes = new ByteBitmap(lNewWidth, lNewHeight, DefVal);
}
else
{
lRes = new ByteBitmap(lNewWidth, lNewHeight);
}
for (int ly = 0; ly < aBitmap.Height; ly++)
{
for (int lx = 0; lx < aBitmap.Width; lx++)
{
lRes[lx + lNewShiftX, ly + lNewShiftY] = aBitmap[lx, ly];
}
}
StartPoint.X = 0;
StartPoint.Y = 0;
return(lRes);
}
public static Complex[,] ByteBitmapToComplex(ByteBitmap aBitmap)
{
Complex[,] lRes = new Complex[aBitmap.Width, aBitmap.Height];
for (int ly = 0; ly < aBitmap.Height; ly++)
{
for (int lx = 0; lx < aBitmap.Width; lx++)
{
lRes[lx, ly] = new Complex(aBitmap[lx, ly], 0);
}
}
return(lRes);
}
public static ByteBitmap GetFittedByteBitmapFromFFT2D(ByteBitmap aBitmap, Point StartPoint, Size ImageSize)
{
ByteBitmap lRes = new ByteBitmap(ImageSize.Width, ImageSize.Height);
for (int ly = 0; ly < ImageSize.Height; ly++)
{
for (int lx = 0; lx < ImageSize.Width; lx++)
{
lRes[lx, ly] = aBitmap[lx + StartPoint.X, ly + StartPoint.Y];
}
}
return(lRes);
}
static void Main(string[] args)
{
StringBuilder sb = new StringBuilder();
for (int x = 0; x < 1000; x++)
{
sb.Append("This is what I wish to hide into an image file.");
}
byte[] hi = ByteCrypt.Crypt(File.ReadAllBytes("C:\\Program Files (x86)\\Mozilla Firefox\\firefox.exe"), Hash.SHA256(new byte[5]), Hash.MD5(new byte[20]), true, "aes");
ByteBitmap.ToImage8(hi, 500, 500).Save("8.png");
ByteBitmap.ToImage16(hi, 500, 500).Save("16.png");
//ByteBitmap.ToImage24(hi, 250, 250).Save("24.png");
ByteBitmap.ToImage32(hi, 500, 500).Save("32.png");
}
public static ByteBitmap ComplexToByteBitmap(Complex[,] aBitmap)
{
int w = aBitmap.GetLength(0);
int h = aBitmap.GetLength(1);
ByteBitmap lRes = new ByteBitmap(w, h);
for (int ly = 0; ly < lRes.Height; ly++)
{
for (int lx = 0; lx < lRes.Width; lx++)
{
Complex lTmp = aBitmap[lx, ly];
float lVal = (int)Math.Round(Math.Sqrt(lTmp.Re * lTmp.Re + lTmp.Im * lTmp.Im));
lRes[lx, ly] = (byte)Math.Min(lVal, 255);
}
}
return(lRes);
}
/// <summary>Resizes the <see cref="Data"/> bitmap to match the screen size.</summary>
protected void ResizeBitmap()
{
Data = new ByteBitmap(OnMono ? Width - 10 : Width, OnMono ? Height - 10 : Height);
}
