類似度-オーステナイト距離(正規化)
<!-- lang: cpp -->
double CalcSimilarity(IplImage* S,IplImage* T)
{
double r = 0.f;
int width = T->width;
int height = T->height;
uchar* ptrS = NULL;
uchar* ptrT = NULL;
float a = 0,b = 0,c = 0;
for(int i=0;i<height;i++)
{
ptrS = (uchar*)S->imageData+i*S->widthStep;
ptrT = (uchar*)T->imageData+i*T->widthStep;
for(int j=0;j<width;j++)
{
a += ptrS[j]*ptrS[j];
c += ptrT[j]*ptrT[j];
b += ptrS[j]*ptrT[j];
}
}
return b / (sqrt(a) * sqrt(c));
}