public void Encoding(Bitmap data, Method method)
{
switch (method)
{
case Method.VectorQuantization:
{
var comp = new VectorQuantization(data);
comp.Encoding(4);
}
break;
case Method.DiscreteCosineTransform:
{
Bitmap cycleBitmap = new Bitmap(data.Width, data.Height);
Graphics cycleGraphics = Graphics.FromImage(cycleBitmap);
Bitmap coeffBitmap = new Bitmap(data.Width, data.Height);
Graphics coeffGraphics = Graphics.FromImage(coeffBitmap);
DCT d = new DCT(data.Width, data.Height);
for (int y = 0; y < data.Height; y++)
{
for (int x = 0; x < data.Width; x++)
{
Bitmap sector = new Bitmap(data.Width, data.Height);
Graphics g = Graphics.FromImage(sector);
Rectangle dest = new Rectangle(0, 0, data.Width, data.Height);
Rectangle src = new Rectangle(x * data.Width, y * data.Height, data.Width, data.Height);
g.DrawImage(data, dest, src, GraphicsUnit.Pixel);
double[][,] values = d.BitmapToMatrices(sector);
double[][,] coeffs = d.DCTMatrices(values);
coeffGraphics.DrawImage(d.MatricesToBitmap(coeffs, false), src, dest, GraphicsUnit.Pixel);
values = d.IDCTMatrices(coeffs);
cycleGraphics.DrawImage(d.MatricesToBitmap(values), src, dest, GraphicsUnit.Pixel);
}
}
cycleBitmap.Save(Directory.GetCurrentDirectory() + @"\\cycled.png");
coeffBitmap.Save(Directory.GetCurrentDirectory() + @"\\coeffs.png");
}
break;
}
}
private Bitmap GetImage(Method method)
{
switch (method)
{
case Method.VectorQuantization:
{
var comp = new VectorQuantization(null);
return(comp.GetImage());
}
break;
case Method.DiscreteCosineTransform:
{
return(new Bitmap(Directory.GetCurrentDirectory() + @"\\cycled.png"));
}
default: return(null);
}
}
