public MedianFilter(int maskSize)
{
ValidationUtils.IsMaskSize(maskSize);
Range = maskSize / 2;
Center = maskSize * maskSize / 2;
}
private void Validate(int maskSize, int[] thresholds)
{
ValidationUtils.IsMaskSize(maskSize);
if (thresholds.Length != (maskSize * maskSize - 1) / 2)
{
throw new ArgumentException("Thresholds must contain (maskSize ^ 2 - 1) / 2 elements");
}
}
private static void Validate(int range, int levels)
{
ValidationUtils.IsMaskSize(range);
if (levels <= 0)
{
throw new ArgumentException("Levels value has to be positive");
}
}
public static Image <Pixel1> Dilation(this Image <Pixel1> image, int maskSize = 3)
{
ValidationUtils.IsMaskSize(maskSize);
var range = maskSize / 2;
var currentIndex = maskSize * maskSize / 2;
var originalImage = image.Copy();
originalImage.ForEachNeighbourhood(range, (x, y, neighbourhood) =>
{
var newValue = false;
for (int i = 0; i < neighbourhood.Length; i++)
{
if (i != currentIndex && neighbourhood[i].Value)
{
newValue = true;
break;
}
}
image.Set(x, y, new Pixel1(newValue));
});
return(image);
}
public KuwaharaFilter(int maskSize)
{
ValidationUtils.IsMaskSize(maskSize);
Range = maskSize / 2;
}