public static void PrintMatrix(string name, YCrCb[,] matrix)
{
Console.WriteLine(name + " Y ");
for (int i = 0; i < matrix.GetLength(0); i++)
{
for (int j = 0; j < matrix.GetLength(1); j++)
{
Console.Write((matrix[i, j].Y).ToString().PadLeft(6, ' '));
}
Console.WriteLine();
}
Console.WriteLine();
//Console.WriteLine(name + " Cr ");
//for (int i = 0; i < matrix.GetLength(0); i++)
//{
// for (int j = 0; j < matrix.GetLength(1); j++)
// {
// Console.Write((matrix[i, j].Cr).ToString().PadLeft(10, ' '));
// }
// Console.WriteLine();
//}
//Console.WriteLine();
//Console.WriteLine(name + " Cb ");
//for (int i = 0; i < matrix.GetLength(0); i++)
//{
// for (int j = 0; j < matrix.GetLength(1); j++)
// {
// Console.Write((matrix[i, j].Cb).ToString().PadLeft(10, ' '));
// }
// Console.WriteLine();
//}
//Console.WriteLine();
}
public void Supersample(YCrCb[,] matrix)
{
for (int i = 0; i < matrix.GetLength(0); i++)
{
for (int j = 0; j < matrix.GetLength(1); j++)
{
matrix[i, j].Y += 128;
matrix[i, j].Cr += 128;
matrix[i, j].Cb += 128;
}
}
}
public void CalculateIDCT(YCrCb[,] matrix)
{
int width = matrix.GetLength(0);
int height = matrix.GetLength(1);
for (int x = 0; x < width; x = x + BlockSize)
{
for (int y = 0; y < height; y = y + BlockSize)
{
calculateIDCTForBlock(matrix, x, y);
}
}
}
private int bitsPerNonZeroDCTCoefficient(YCrCb[,] matrix)
{
int count = 0;
for (int i = 0; i < matrix.GetLength(0); i++)
{
for (int j = 0; j < matrix.GetLength(1); j++)
{
if (matrix[i, j].Y != 0 && matrix[i, j].Y != 1)
{
count++;
}
}
}
return count;
}
public List<Point> Permutation(YCrCb[,] matrix)
{
var points = new List<Point>();
for (int i = 0; i < matrix.GetLength(0); i++)
{
for (int j = 0; j < matrix.GetLength(1); j++)
{
if (matrix[i, j].Y != 0 && matrix[i, j].Y != 1)
{
points.Add(new Point(i, j));
}
}
}
return points;
}
public static RGB[,] Parse(YCrCb[,] yCrCb)
{
int m = yCrCb.GetLength(0);
int n = yCrCb.GetLength(1);
var matrix = new RGB[m, n];
for (int i = 0; i < m; i++)
{
for (int j = 0; j < n; j++)
{
matrix[i, j] = Parse(yCrCb[i, j]);
}
}
return matrix;
}
public void ApplyQuantization(YCrCb[,] matrix, int qualityFactor)
{
int i, j, k, l;
int[,] qualityLuminanceMatrix = generateQualityFactorLuminanceMatrix(qualityFactor);
int[,] qualityChrominanceMatrix = generateQualityFactorChrominanceMatrix(qualityFactor);
for (i = 0; i < matrix.GetLength(0); i++)
{
k = i % 8;
for (j = 0; j < matrix.GetLength(1); j++)
{
l = j % 8;
matrix[i, j].Y = Math.Round(matrix[i, j].Y / qualityLuminanceMatrix[k, l]);
matrix[i, j].Cr = Math.Round(matrix[i, j].Cr / qualityChrominanceMatrix[k, l]);
matrix[i, j].Cb = Math.Round(matrix[i, j].Cb / qualityChrominanceMatrix[k, l]);
}
}
}
