public DwtDctSvdAlgorithm()
{
_imageArrayConverter = new ImageArrayConverter();
_stringArrayConverter = new StringToArrayConverter();
_matrixService = new MatrixService();
_dwtHandler = new DwtPrecisionAlgorithm();
_svdHandler = new SvdAlgorithm();
_iterations = 1;
_quarter = QuarterSymbol.HH;
_channel = EmbeddingChanel.R;
}
private Bitmap ExtractQuarter(Bitmap imageToSplit, int iterations, QuarterSymbol quarterSymbol)
{
var quarterImage = new Bitmap(imageToSplit.Width / Convert.ToInt32(Math.Pow(2, _iterations)), imageToSplit.Height / Convert.ToInt32(Math.Pow(2, _iterations)));
int widthShift = 0;
int heightShift = 0;
int widthShiftEnd = imageToSplit.Width / Convert.ToInt32(Math.Pow(2, _iterations));
int heightShiftEnd = imageToSplit.Width / Convert.ToInt32(Math.Pow(2, _iterations));
switch (quarterSymbol)
{
case QuarterSymbol.HH:
widthShift = Convert.ToInt32(Math.Ceiling(imageToSplit.Width / Math.Pow(2, _iterations)));
heightShift = Convert.ToInt32(Math.Ceiling(imageToSplit.Height / Math.Pow(2, _iterations)));
widthShiftEnd = imageToSplit.Width / Convert.ToInt32(Math.Pow(2, _iterations - 1));
heightShiftEnd = imageToSplit.Height / Convert.ToInt32(Math.Pow(2, _iterations - 1));
break;
case QuarterSymbol.HL:
widthShift = imageToSplit.Width / Convert.ToInt32(Math.Pow(2, _iterations));
heightShift = 0;
widthShiftEnd = imageToSplit.Width / Convert.ToInt32(Math.Pow(2, _iterations - 1));
heightShiftEnd = imageToSplit.Height / Convert.ToInt32(Math.Pow(2, _iterations - 1));
break;
case QuarterSymbol.LH:
widthShift = 0;
heightShift = imageToSplit.Height / Convert.ToInt32(Math.Pow(2, _iterations));
widthShiftEnd = imageToSplit.Width / Convert.ToInt32(Math.Pow(2, _iterations - 1));
heightShiftEnd = imageToSplit.Height / Convert.ToInt32(Math.Pow(2, _iterations - 1));
break;
case QuarterSymbol.LL:
widthShift = 0;
heightShift = 0;
widthShiftEnd = imageToSplit.Width / Convert.ToInt32(Math.Pow(2, _iterations - 1));
heightShiftEnd = imageToSplit.Height / Convert.ToInt32(Math.Pow(2, _iterations - 1));
break;
}
for (int i = heightShift; i < heightShiftEnd; i++)
{
for (int j = widthShift; j < widthShiftEnd; j++)
{
var width = j - widthShift;
var height = i - heightShift;
Color color = imageToSplit.GetPixel(j, i);
quarterImage.SetPixel(width, height, color);
}
}
return(quarterImage);
}
private void SetQuarterFromConfiguration(DwtSvdConfiguration config)
{
if (config.QuarterSymbol.Contains(QuarterSymbol.HH))
{
_quarter = QuarterSymbol.HH;
}
if (config.QuarterSymbol.Contains(QuarterSymbol.LL))
{
_quarter = QuarterSymbol.HH;
}
if (config.QuarterSymbol.Contains(QuarterSymbol.LH))
{
_quarter = QuarterSymbol.HH;
}
if (config.QuarterSymbol.Contains(QuarterSymbol.HL))
{
_quarter = QuarterSymbol.HL;
}
}
private decimal[][,] MergeQuarter(decimal[][,] matrixToMerge, decimal[][,] originMatrix, int iterations, QuarterSymbol quarterSymbol)
{
var countOfMatrix = originMatrix.GetLength(0);
var matrixWidth = originMatrix[0].GetLength(0);
var matrixHeight = originMatrix[0].GetLength(1);
var quarterImage = new decimal[countOfMatrix][, ];
int widthShift = 0;
int heightShift = 0;
int widthShiftEnd = matrixWidth / Convert.ToInt32(Math.Pow(2, _iterations));
int heightShiftEnd = matrixHeight / Convert.ToInt32(Math.Pow(2, _iterations));
switch (quarterSymbol)
{
case QuarterSymbol.HH:
widthShift = Convert.ToInt32(Math.Ceiling(matrixWidth / Math.Pow(2, _iterations)));
heightShift = Convert.ToInt32(Math.Ceiling(matrixHeight / Math.Pow(2, _iterations)));
widthShiftEnd = matrixWidth;
heightShiftEnd = matrixHeight;
break;
case QuarterSymbol.HL:
widthShift = matrixWidth / Convert.ToInt32(Math.Pow(2, _iterations));
heightShift = 0;
widthShiftEnd = matrixWidth / Convert.ToInt32(Math.Pow(2, _iterations));
heightShiftEnd = matrixHeight / Convert.ToInt32(Math.Pow(2, _iterations));
break;
case QuarterSymbol.LH:
widthShift = 0;
heightShift = matrixHeight / Convert.ToInt32(Math.Pow(2, _iterations));
widthShiftEnd = matrixWidth / Convert.ToInt32(Math.Pow(2, _iterations));
heightShiftEnd = matrixHeight / Convert.ToInt32(Math.Pow(2, _iterations));
break;
case QuarterSymbol.LL:
widthShift = 0;
heightShift = 0;
widthShiftEnd = matrixWidth / Convert.ToInt32(Math.Pow(2, _iterations));
heightShiftEnd = matrixHeight / Convert.ToInt32(Math.Pow(2, _iterations));
break;
}
for (int k = 0; k < countOfMatrix; k++)
{
for (int j = heightShift; j < heightShiftEnd; j++)
{
for (int i = widthShift; i < widthShiftEnd; i++)
{
var width = i - widthShift;
var height = j - heightShift;
originMatrix[k][i, j] = matrixToMerge[k][width, height];
}
}
}
return(originMatrix);
}
private decimal[][,] ExtractQuarter(decimal[][,] matrixToSplit, int iterations, QuarterSymbol quarterSymbol)
{
decimal[][,] origin = matrixToSplit.DeepClone();
var countOfMatrix = matrixToSplit.GetLength(0);
var matrixWidth = matrixToSplit[0].GetLength(0);
var matrixHeight = matrixToSplit[0].GetLength(1);
//var quarterImage = new decimal[countOfMatrixes][matrixWidth / Convert.ToInt32(Math.Pow(2, _iterations)), matrixHeight / Convert.ToInt32(Math.Pow(2, _iterations))];
var quarterImage = new decimal[countOfMatrix][, ];
int widthShift = 0;
int heightShift = 0;
int widthShiftEnd = matrixWidth / Convert.ToInt32(Math.Pow(2, iterations));
int heightShiftEnd = matrixHeight / Convert.ToInt32(Math.Pow(2, iterations));
for (int i = 0; i < countOfMatrix; i++)
{
quarterImage[i] = new decimal[widthShiftEnd, heightShiftEnd];
}
switch (quarterSymbol)
{
case QuarterSymbol.HH:
widthShift = Convert.ToInt32(Math.Ceiling(matrixWidth / Math.Pow(2, iterations)));
heightShift = Convert.ToInt32(Math.Ceiling(matrixHeight / Math.Pow(2, iterations)));
widthShiftEnd = matrixWidth;
heightShiftEnd = matrixHeight;
break;
case QuarterSymbol.HL:
widthShift = matrixWidth / Convert.ToInt32(Math.Pow(2, iterations));
heightShift = 0;
widthShiftEnd = matrixWidth;
heightShiftEnd = matrixHeight / Convert.ToInt32(Math.Pow(2, iterations));
break;
case QuarterSymbol.LH:
widthShift = 0;
heightShift = matrixHeight / Convert.ToInt32(Math.Pow(2, iterations));
widthShiftEnd = matrixWidth / Convert.ToInt32(Math.Pow(2, iterations));
heightShiftEnd = matrixHeight;
break;
case QuarterSymbol.LL:
widthShift = 0;
heightShift = 0;
widthShiftEnd = matrixWidth / Convert.ToInt32(Math.Pow(2, iterations));
heightShiftEnd = matrixHeight / Convert.ToInt32(Math.Pow(2, iterations));
break;
}
for (int k = 0; k < countOfMatrix; k++)
{
for (int j = heightShift; j < heightShiftEnd; j++)
{
for (int i = widthShift; i < widthShiftEnd; i++)
{
var width = i - widthShift;
var height = j - heightShift;
quarterImage[k][width, height] = origin[k][i, j];
}
}
}
return(quarterImage);
}
