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);
}
private static void applyAdaptiveDeadzone (float[,] array, int numCoeffs)
{
int width = array.GetLength (0);
int height = array.GetLength (1);
Biorthogonal53Wavelet2D wavelet53 = new Biorthogonal53Wavelet2D (width, height);
OrderWavelet2D waveletOrder = new OrderWavelet2D (width, height);
wavelet53.EnableCaching = true;
waveletOrder.EnableCaching = true;
wavelet53.TransformIsotropic2D (array);
//Reverse the ordering of the coefficients
waveletOrder.BacktransformIsotropic2D (array);
//Use numCoeffs cofficient out of 64 (8x8) -> for e.g. numCoeffs = 5 this
//means a compression to 7,8% of the original size
waveletOrder.CropCoefficients (array, 7, 8);
waveletOrder.TransformIsotropic2D (array);
wavelet53.BacktransformIsotropic2D (array);
}
private static void applyAdaptiveDeadzone(float[,] array, int numCoeffs)
{
int width = array.GetLength(0);
int height = array.GetLength(1);
Biorthogonal53Wavelet2D wavelet53 = new Biorthogonal53Wavelet2D(width, height);
OrderWavelet2D waveletOrder = new OrderWavelet2D(width, height);
wavelet53.EnableCaching = true;
waveletOrder.EnableCaching = true;
wavelet53.TransformIsotropic2D(array);
//Reverse the ordering of the coefficients
waveletOrder.BacktransformIsotropic2D(array);
//Use numCoeffs cofficient out of 64 (8x8) -> for e.g. numCoeffs = 5 this
//means a compression to 7,8% of the original size
waveletOrder.CropCoefficients(array, 7, 8);
waveletOrder.TransformIsotropic2D(array);
wavelet53.BacktransformIsotropic2D(array);
}
private static void applyAdaptiveShapening(float[,] array, float position)
{
int width = array.GetLength(0);
int height = array.GetLength(1);
Biorthogonal53Wavelet2D wavelet53 = new Biorthogonal53Wavelet2D(width, height);
OrderWavelet2D waveletOrder = new OrderWavelet2D(width, height);
wavelet53.EnableCaching = true;
waveletOrder.EnableCaching = true;
wavelet53.TransformIsotropic2D(array);
//Reverse the ordering of the coefficients
waveletOrder.BacktransformIsotropic2D(array);
float[] scale = new float[8 * 8];
for (int x = 0; x < 8 * 8; x++)
{
scale [x] = 1.0f + 2.0f / ((position - x) * (position - x) + 1.0f);
}
waveletOrder.ScaleCoefficients(array, scale, 8);
waveletOrder.TransformIsotropic2D(array);
wavelet53.BacktransformIsotropic2D(array);
}
public static void SaveAsFile(string sFile, ref int[,] rgbArray, int width, int height, int quality)
{
int size = width * height;
int numRemainingY = quality * size / 100;
int numRemainingCg = quality * size / 25;
int numRemainingCo = quality * size / 25;
int newWidth, newHeight;
// int[,] rgbArray = new int[width, height];
// RGBColor.FillRGBArrayFromBitmap(bmp, ref rgbArray);
FileStream fs = new FileStream(sFile, FileMode.Create, FileAccess.Write, FileShare.None);
MemoryStream ms = new MemoryStream();
newWidth = IntegerMath.ToPowerOf2(width);
newHeight = IntegerMath.ToPowerOf2(height);
float[,] imgOrgY = new float[width, height];
float[,] imgOrgCg = new float[width, height];
float[,] imgOrgCo = new float[width, height];
float[,] imgY = new float[newWidth, newHeight];
float[,] imgCg = new float[newWidth, newHeight];
float[,] imgCo = new float[newWidth, newHeight];
int[,] imgIY = new int[newWidth, newHeight];
int[,] imgICg = new int[newWidth, newHeight];
int[,] imgICo = new int[newWidth, newHeight];
//YCgCoColor.RGBArrayToYCgCoArrays(ref rgbArray, width, height, ref imgOrgY, ref imgOrgCg, ref imgOrgCo);
YCbCrColor.RGBArrayToYCbCrArrays(ref rgbArray, width, height, ref imgOrgY, ref imgOrgCg, ref imgOrgCo);
ArrayHelper2D.ResizeArray2D(ref imgOrgY, ref imgY, width, height, newWidth, newHeight, ArrayHelper2D.ResizeFilter.NONE_CLAMP);
ArrayHelper2D.ResizeArray2D(ref imgOrgCg, ref imgCg, width, height, newWidth, newHeight, ArrayHelper2D.ResizeFilter.NONE_CLAMP);
ArrayHelper2D.ResizeArray2D(ref imgOrgCo, ref imgCo, width, height, newWidth, newHeight, ArrayHelper2D.ResizeFilter.NONE_CLAMP);
Biorthogonal53Wavelet2D wavelet = new Biorthogonal53Wavelet2D(newWidth, newHeight, 8, 8, true);
wavelet.TransformIsotropic2D(ref imgY);
wavelet.TransformIsotropic2D(ref imgCg);
wavelet.TransformIsotropic2D(ref imgCo);
ArrayHelper2D.RemoveSmallestCoefficients2D(ref imgY, newWidth, newHeight, numRemainingY);
ArrayHelper2D.RemoveSmallestCoefficients2D(ref imgCg, newWidth, newHeight, numRemainingCg);
ArrayHelper2D.RemoveSmallestCoefficients2D(ref imgCo, newWidth, newHeight, numRemainingCo);
//simple quantification
float quant = 1.0f / (float)((100.0f - quality) + 1.0f);
for (int y = 0; y < newHeight; y++)
{
for (int x = 0; x < newWidth; x++)
{
imgY[x, y] *= quant;
imgCg[x, y] *= quant;
imgCo[x, y] *= quant;
}
}
ArrayHelper2D.ConvertFloatToInt(ref imgY, ref imgIY, newWidth, newHeight);
ArrayHelper2D.ConvertFloatToInt(ref imgCg, ref imgICg, newWidth, newHeight);
ArrayHelper2D.ConvertFloatToInt(ref imgCo, ref imgICo, newWidth, newHeight);
BinaryWriter writer = new BinaryWriter(ms);
writer.Write(width);
writer.Write(height);
writer.Write(quality);
for (int y = 0; y < newHeight; y++)
{
for (int x = 0; x < newWidth; x++)
{
writer.Write(imgIY[x, y]);
writer.Write(imgICg[x, y]);
writer.Write(imgICo[x, y]);
}
}
writer.Close();
byte[] buffer = ms.GetBuffer();
byte[] compressed = Memory.CompressBuffer(ref buffer);
fs.Write(compressed, 0, compressed.Length);
fs.Close();
}