public void Test_Moments()
{
using (IMagickImage image = new MagickImage(Files.ImageMagickJPG))
{
Moments moments = image.Moments();
Assert.IsNotNull(moments);
ChannelMoments first = moments.GetChannel(PixelChannel.Red);
Assert.IsNotNull(first);
Assert.AreEqual(PixelChannel.Red, first.Channel);
Assert.AreEqual(56.59, first.Centroid.X, 0.01);
Assert.AreEqual(56.00, first.Centroid.Y, 0.01);
Assert.AreEqual(148.92, first.EllipseAngle, 0.01);
Assert.AreEqual(73.53, first.EllipseAxis.X, 0.01);
Assert.AreEqual(66.82, first.EllipseAxis.Y, 0.01);
Assert.AreEqual(0.30, first.EllipseEccentricity, 0.01);
Assert.AreEqual(0.79, first.EllipseIntensity, 0.01);
double[] expected = new double[] { 0.2004, 0.0003, 0.0001, 0.0, 0.0, 0.0, 0.0, 0.0 };
for (int i = 0; i < 8; i++)
{
Assert.AreEqual(expected[i], first.HuInvariants(i), 0.0001);
}
moments = image.Moments();
ChannelMoments second = moments.GetChannel(PixelChannel.Red);
Assert.IsTrue(first.Centroid == second.Centroid);
Assert.IsTrue(first.Centroid.Equals(second.Centroid));
Assert.IsTrue(first.Centroid.Equals((object)second.Centroid));
ExceptionAssert.Throws <ArgumentOutOfRangeException>(delegate()
{
first.HuInvariants(9);
});
}
}