public double Area(int x1, int y1, int x2, int y2)
{
if (x2 < x1 || y2 < y1)
{
// TODO: throw?
return(0.0);
}
double area = m_image.Get(x2, y2);
if (x1 > 0)
{
area -= m_image.Get(x1 - 1, y2);
if (y1 > 0)
{
area += m_image.Get(x1 - 1, y1 - 1);
}
}
if (y1 > 0)
{
area -= m_image.Get(x2, y1 - 1);
}
//std::cout << "Area("<<x1<<","<<y1<<","<<x2<<","<<y2<<") = "<<area<<"\n";
return(area);
}
public void Test1()
{
Image image = new Image(12, 0);
ImageBuilder builder = new ImageBuilder(image);
ChromaResampler resampler = new ChromaResampler(2, builder);
double[] d1 = { 0.0, 5.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 };
double[] d2 = { 1.0, 6.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 };
double[] d3 = { 2.0, 7.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 };
resampler.Consume(d1);
resampler.Consume(d2);
resampler.Consume(d3);
Assert.AreEqual(1, image.Rows);
Assert.AreEqual(0.5, image.Get(0, 0));
Assert.AreEqual(5.5, image.Get(0, 1));
}
public void TestDiff()
{
double[] coefficients = { 1.0, -1.0 };
Image image = new Image(12);
ImageBuilder builder = new ImageBuilder(image);
ChromaFilter filter = new ChromaFilter(coefficients, builder);
double[] d1 = { 0.0, 5.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 };
double[] d2 = { 1.0, 6.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 };
double[] d3 = { 2.0, 7.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 };
filter.Consume(d1);
filter.Consume(d2);
filter.Consume(d3);
Assert.AreEqual(2, image.Rows);
Assert.AreEqual(-1.0, image.Get(0, 0));
Assert.AreEqual(-1.0, image.Get(1, 0));
Assert.AreEqual(-1.0, image.Get(0, 1));
Assert.AreEqual(-1.0, image.Get(1, 1));
}
public void TestBlur3()
{
double[] coefficients = { 0.5, 0.7, 0.5 };
Image image = new Image(12, 0);
ImageBuilder builder = new ImageBuilder(image);
ChromaFilter filter = new ChromaFilter(coefficients, builder);
double[] d1 = { 0.0, 5.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 };
double[] d2 = { 1.0, 6.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 };
double[] d3 = { 2.0, 7.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 };
double[] d4 = { 3.0, 8.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 };
filter.Consume(d1);
filter.Consume(d2);
filter.Consume(d3);
filter.Consume(d4);
Assert.AreEqual(2, image.Rows);
Assert.AreEqual(1.7, image.Get(0, 0), TestsHelper.EPS);
Assert.AreEqual(3.399999999999999, image.Get(1, 0), TestsHelper.EPS);
Assert.AreEqual(10.199999999999999, image.Get(0, 1), TestsHelper.EPS);
Assert.AreEqual(11.899999999999999, image.Get(1, 1), TestsHelper.EPS);
}
