public Image2DMatrix GetImageMatrix()
{
Image2DMatrix sourceMatrix = _imageLoader.GetImageMatrix();
if (Quadrilateral != null)
{
//Bilinear transformations have 8 Parameter. These parameter can be obtained
//by solving two linear equation systems. This will be done in the following.
Quadrilateral targetQuadrilateral = GetTargetQuadrilateral();
Matrix <double> m = GetmMatrix();
Vector <double> a = GetaVector(targetQuadrilateral, m);
Vector <double> b = GetbVector(targetQuadrilateral, m);
double a0 = a[0];
double a1 = a[1];
double a2 = a[2];
double a3 = a[3];
double b0 = b[0];
double b1 = b[1];
double b2 = b[2];
double b3 = b[3];
return(Image2DMatrix.Transform(sourceMatrix, (x, y) =>
{
x = (int)(a0 * x + a1 * y + a2 * x * y + a3);
y = (int)(b0 * x + b1 * y + b2 * x * y + b3);
return (x, y);
}));
}
return(sourceMatrix);
}
public Image2DMatrix GetImageMatrix()
{
MatrixChanged = false;
Image2DMatrix sourceMatrix = _imageLoader.GetImageMatrix();
if (OperationShouldBeExecuted())
{
if (MatrixMustBeUpdated())
{
MatrixChanged = true;
_lastDx = Dx;
_lastDy = Dy;
TransformationMatrix shiftingMatrix = TransformationMatrix.UnitMatrix3x3.Shift2D(Dx, Dy);
_cashedMatrix = Image2DMatrix.Transform(sourceMatrix,
new Image2DMatrix(sourceMatrix.Height, sourceMatrix.Width, sourceMatrix.BytePerPixel), shiftingMatrix);
}
return(_cashedMatrix);
}
else
{
MatrixChanged = true;
_lastDx = Dx;
_lastDy = Dy;
return(sourceMatrix);
}
}
/// <summary>
/// Executes the image loading stack and applies transformations.
/// Finally, the image matrix will be converted to a bitmap image.
/// </summary>
/// <returns></returns>
public WriteableBitmap Build()
{
SetImageLoader();
Image2DMatrix imageMatrix = _imageLoader.GetImageMatrix();
TransformationMatrix transformationMatrix = GetTransformationMatrix(imageMatrix);
imageMatrix = ApplyTransformationMatrix(imageMatrix, transformationMatrix);
return(MatrixToBitmapImageConverter.GetImage(imageMatrix));
}
public Image2DMatrix GetImageMatrix()
{
MatrixChanged = false;
Image2DMatrix sourceMatrix = _imageLoader.GetImageMatrix();
if (UseCustomBrightness)
{
AdjustBrightness(sourceMatrix, BrightnessFactor);
}
else
{
AdjustBrightness(sourceMatrix, MetaFileBrightnessFactor);
}
return(_cashedMatrix);
}
