public void Scaling_TestArray_EqualsReference(string method)
{
testImg.New(method);
LBPApplication app = new LBPApplication
{
Image = testImg.Image.ToDouble()
};
app.Scaling(); // Scaling from LBPAppilcation
// Reference
double mean = testImg.Image
.Sum()
/ testImg.Image.Length;
double std = Math.Sqrt(testImg.Image
.Subtract(mean)
.Pow(2)
.Sum()
/ (testImg.Image.Length - 1));
float[,] refArray = testImg.Image
.Subtract(mean)
.Divide(std)
.ToSingle();
// Assert
for (int i = 0; i < app.Image.GetLength(0); i++)
{
for (int j = 0; j < app.Image.GetLength(1); j++)
{
Assert.Equal(app.Image[i, j], refArray[i, j], 5);
}
}
}
public void Scaling_OnesArray_ThrowsException()
{
testImg.New("Ones");
LBPApplication app = new LBPApplication
{
Image = testImg.Image.ToDouble()
};
Exception ex = Assert.Throws <Exception>(
delegate { app.Scaling(); });
Assert.Equal("Standard deviation of the image is 0! Cannot divide!", ex.Message);
}
