public void GetDerivativeTest()
{
var flatImage = LoadFlatImageFromResource("ScreenGrid.Tests.Resources.ImageSimple.png");
var stripeMiddle = flatImage.GetHorizontalStripe(flatImage.Height / 2);
var dMiddle = FlatImage.GetDerivative(stripeMiddle);
Assert.AreEqual(stripeMiddle.Length, dMiddle.Length);
// Border detection
Assert.AreEqual(0, dMiddle[11]);
Assert.Greater(dMiddle[12], 0);
}
public void FindBordersTest()
{
var flatImage = LoadFlatImageFromResource("ScreenGrid.Tests.Resources.ImageSimple.png");
const int minimalSegmentLength = 8;
var step = flatImage.Height / 8;
var list = new List <Tuple <int, int> >();
for (var iy = minimalSegmentLength + step; iy < flatImage.Height - (minimalSegmentLength + step); iy += step)
{
var stripe = flatImage.GetHorizontalStripe(iy);
var derivative = FlatImage.GetDerivative(stripe);
var segments = IntegerSegmentUtils.FindZeroSegments(derivative, minimalSegmentLength);
Assert.AreEqual(2, segments.Count, String.Format("iy={0}", iy));
}
}
