public void MedianFilter_LargeOrOddkernel_ThrowsCorrectException()
{ /// Test whether Medianfilter class throws correct exceptions
testImg.New("Quarters", new int[] { 6, 6 });
// Filter
MedianFilter medianLarge = new MedianFilter(15);
MedianFilter medianEven = new MedianFilter(4);
Exception ex = Assert.Throws <Exception>(
delegate { medianLarge.Filtering(testImg.Image.ToDouble()); });
Assert.Equal("Kernel radius is larger than input array!", ex.Message);
Exception ex2 = Assert.Throws <Exception>(
delegate { medianEven.Filtering(testImg.Image.ToDouble()); });
Assert.Equal("Kernel width is not odd!", ex2.Message);
}
public void MedianFilter_SmallQuarter_EqualsPythonArray()
{ /// Test whether Medianfilter class equals to scipy.signal.medfilt (default)
testImg.New("Quarters", new int[] { 6, 6 });
// Filter
MedianFilter mc = new MedianFilter(3);
double[,] imageFiltered = mc.Filtering(testImg.Image.ToDouble());
//Console.WriteLine("Median filtered:"); Functions.DisplayArray(imageFiltered);
double[,] refArray = new double[6, 6] // Here, actually columns are written out
{
{ 0, 1, 1, 1, 3, 0 },
{ 1, 1, 1, 3, 3, 3 },
{ 1, 1, 2, 3, 3, 3 },
{ 1, 2, 2, 3, 4, 3 },
{ 2, 2, 2, 4, 4, 4 },
{ 0, 2, 2, 2, 4, 0 }
};
//Console.WriteLine("Reference:"); Functions.DisplayArray(refArray);
Assert.Equal(refArray, imageFiltered);
}
