Hi,
 There is a bug in function:
vxl-users//-----------------------------------------------------------------------------
//: Normalize Homg2D to unit magnitude
void HomgOperator2D::unitize(Homg2D* a)
{
....
  norm = 1.0/vcl_sqrt(norm);
  a->set(a->x()*norm, a->w()*norm, a->w()*norm);
}
shuold be

//: Normalize Homg2D to unit magnitude
void HomgOperator2D::unitize(Homg2D* a)
{
....
  norm = 1.0/vcl_sqrt(norm);
  a->set(a->x()*norm, a->y()*norm, a->w()*norm);
}


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