public static void Main(string[] args)
{
Bitmap bmp = new Bitmap("../../sample.png");
float[,] yArray = new float[bmp.Width, bmp.Height];
float[,] cbArray = new float[bmp.Width, bmp.Height];
float[,] crArray = new float[bmp.Width, bmp.Height];
float[,] aArray = new float[bmp.Width, bmp.Height];
ImageArrayConverter.BitmapToAYCbCrArrays(bmp, aArray, yArray, cbArray, crArray);
applyAdaptiveShapening(yArray, 5.0f);
ImageArrayConverter.AYCbCrArraysToBitmap(aArray, yArray, cbArray, crArray, bmp);
bmp.Save("test.png", ImageFormat.Png);
}
public static void Main(string[] args)
{
Bitmap bmp = new Bitmap("../../sample.png");
float[,] yArray = new float[bmp.Width, bmp.Height];
float[,] cbArray = new float[bmp.Width, bmp.Height];
float[,] crArray = new float[bmp.Width, bmp.Height];
float[,] aArray = new float[bmp.Width, bmp.Height];
ImageArrayConverter.BitmapToAYCbCrArrays(bmp, aArray, yArray, cbArray, crArray);
//setting ~95% of luminance coefficients to zero
applyAdaptiveDeadzone(yArray, 3);
//compress chroma even more (98,4%)
applyAdaptiveDeadzone(cbArray, 1);
applyAdaptiveDeadzone(crArray, 1);
ImageArrayConverter.AYCbCrArraysToBitmap(aArray, yArray, cbArray, crArray, bmp);
bmp.Save("test.png", ImageFormat.Png);
}
public static void Main(string[] args)
{
Bitmap bmp = new Bitmap("../../sample.png");
Bitmap bmp2 = new Bitmap(2 * bmp.Width, 2 * bmp.Height, PixelFormat.Format32bppArgb);
float[,] yArray2 = new float[bmp2.Width, bmp2.Height];
float[,] cbArray2 = new float[bmp2.Width, bmp2.Height];
float[,] crArray2 = new float[bmp2.Width, bmp2.Height];
float[,] aArray2 = new float[bmp2.Width, bmp2.Height];
ImageArrayConverter.BitmapToAYCbCrArrays(bmp, aArray2, yArray2, cbArray2, crArray2);
Biorthogonal53Wavelet2D wavelet = new Biorthogonal53Wavelet2D(bmp.Width, bmp.Height);
Biorthogonal53Wavelet2D wavelet2 = new Biorthogonal53Wavelet2D(bmp2.Width, bmp2.Height);
wavelet.TransformIsotropic2D(aArray2);
wavelet.TransformIsotropic2D(yArray2);
wavelet.TransformIsotropic2D(cbArray2);
wavelet.TransformIsotropic2D(crArray2);
wavelet2.BacktransformIsotropic2D(aArray2);
wavelet2.BacktransformIsotropic2D(yArray2);
wavelet2.BacktransformIsotropic2D(cbArray2);
wavelet2.BacktransformIsotropic2D(crArray2);
for (int y = 0; y < bmp2.Height; y++)
{
for (int x = 0; x < bmp2.Width; x++)
{
aArray2[x, y] *= 4.0f;
yArray2[x, y] *= 4.0f;
cbArray2[x, y] *= 4.0f;
crArray2[x, y] *= 4.0f;
}
}
ImageArrayConverter.AYCbCrArraysToBitmap(aArray2, yArray2, cbArray2, crArray2, bmp2);
bmp2.Save("test.png", ImageFormat.Png);
}