|
public static Collinear ( |
||
| pt1 | ||
| pt2 | ||
| pt3 | ||
| return | bool | |
public static bool Collinear(PointF pt1, PointF pt2, PointF pt3)
{
return Math.Abs(
(pt1.Y - pt2.Y) * pt3.X +
(pt2.X - pt1.X) * pt3.Y +
(pt1.X * pt2.Y - pt1.Y * pt2.X)) < Constants.SingleEpsilon;
}
| Tools::Collinear ( Accord.Imaging.PointH pt1, Accord.Imaging.PointH pt2, Accord.Imaging.PointH pt3 ) : bool |
/// <summary>
/// Checks if the selected points will result in a degenerate homography.
/// </summary>
///
private bool degenerate(int[] points)
{
PointF[] x1 = this.pointSet1.Submatrix(points);
PointF[] x2 = this.pointSet2.Submatrix(points);
// If any three of the four points in each set is collinear,
// the resulting homography matrix will be degenerate.
return(Tools.Collinear(x1[0], x1[1], x1[2]) ||
Tools.Collinear(x1[0], x1[1], x1[3]) ||
Tools.Collinear(x1[0], x1[2], x1[3]) ||
Tools.Collinear(x1[1], x1[2], x1[3]) ||
Tools.Collinear(x2[0], x2[1], x2[2]) ||
Tools.Collinear(x2[0], x2[1], x2[3]) ||
Tools.Collinear(x2[0], x2[2], x2[3]) ||
Tools.Collinear(x2[1], x2[2], x2[3]));
}
