/// <summary>
/// Filter implementation
/// </summary>
protected override IImageAdapter ProcessFilter(IImageAdapter source)
{
IImageAdapter retVal = null;
Image2DTransforms transform = new Image2DTransforms(source);
transform.ResizeToFitOutputImage = ResizeOutputImage;
if (UseMatrix == false)
{
if (Rotation % 360.0 != 0.0)
{
transform.RotateTransform(Rotation, AngleUnit.Degree);
}
transform.TranslateTransform(HorizontalOffset, VerticalOffset);
transform.ScaleTransform(HorizontalScaling, VerticalScaling);
// Note : Cannot use Matrix property as it will reset the "UseMatrix" field
this[MATRIX].Parameter = transform.ConvertTransformsToMatrix();
}
transform.Transform(Matrix);
retVal = transform.ImageTransformed;
if (VerticalFlip || HorizontalFlip)
{
int x = 0;
int y = 0;
IImageAdapter imageTransformed = retVal;
int width = (int)imageTransformed.Width;
int height = (int)imageTransformed.Height;
if (UseMatrix == false)
{
if (HorizontalFlip)
{
y = height - 1;
}
if (VerticalFlip)
{
x = width - 1;
}
}
retVal = new ImageAdapter(imageTransformed.Width, imageTransformed.Height);
for (int j = 0; j < height; j++)
{
for (int i = 0; i < width; i++)
{
retVal[(int)Math.Abs(x - i), (int)Math.Abs(y - j)] = imageTransformed[i, j];
}
}
}
return(retVal);
}
/// <summary>
/// filter implementation
/// </summary>
protected override IImageAdapter ProcessFilter(IImageAdapter source)
{
// Check Params
if (source == null)
{
throw new ArgumentNullException("source", "Argument cannot be null");
}
if (Width == 0)
{
Width = source.Width;
}
if (Height == 0)
{
Height = source.Height;
}
if ((Height < source.Height || Width < source.Width) && (LowPassFilterOnSubSampling == true))
{
GaussianFilter gf = new GaussianFilter();
int ratio = (int)Math.Max(source.Width / Width, source.Height / Height);
if (ratio < 1)
{
ratio = 2;
}
gf.Length = ratio;
source = gf.Process(source);
Console.WriteLine("<<Proceed with GF subsampling>>");
}
/*
* //
*
*
*
*/
Image2DTransforms transform = new Image2DTransforms(source);
transform.Transform(Matrix);
return(transform.ImageTransformed);
}