float Cylinder::nhs(const Cylinder &c) const
{
int hamming = 0;
const float P = 30;
if (abs(dFi(getrT(),c.getrT())) > 0.785398163397 || dss(c.getX(), c.getY()) > DELTAXY*DELTAXY)
return 0;
for(unsigned int i = 0; i < NUMCELLS; ++i)
if (getB1(i) != c.getB1(i))
hamming++;
return pow(1.0-((float)hamming)/NUMCELLS, P);
}
float Cylinder::similarity(const Cylinder & c) const
{
unsigned int count = 0;
float norma_b = 0, normb_a = 0, norm_diff = 0;
float ca_b, cb_a;
if (abs(dFi(getrT(),c.getrT())) > DELTAZETA)
return 0;
if (bit == false)
{
for (unsigned int i=0; i<NUMCELLS; i++)
{
ca_b = cmVector[i];
cb_a = c.getCM(i);
if (ca_b>=0 && cb_a>=0)
{
count++;
norma_b += ca_b*ca_b;
normb_a += cb_a*cb_a;
norm_diff += ca_b*cb_a;
}
}
//Check if two cylinders are matchable
if(count >= MINCELLS)
{
norm_diff = sqrt(norma_b + normb_a - 2.0*norm_diff);
return 1.0 - (norm_diff/(sqrt(norma_b)+sqrt(normb_a)));
}
else
return 0;
}
else
{
int counta_b = 0, countb_a = 0, count_diff = 0;
for (unsigned int i=0; i<cmBit1.size(); ++i)
if (getB2(i) && c.getB2(i))
{
count++;
if (getB1(i))
{
counta_b++;
if(!c.getB1(i))
count_diff++;
}
if (c.getB1(i))
{
countb_a++;
if(!getB1(i))
count_diff++;
}
}
//Check if two cylinders are matchable
if (count >= MINCELLS)
return (1 - (sqrt(count_diff)/(sqrt(counta_b)+sqrt(countb_a))));
else
return 0;
}
}