Searched refs:sqrt_2 (Results 1 – 1 of 1) sorted by relevance
275 const float sqrt_2 = 1.4142135623730950488016887242097f; in cvExtractSURF() local422 float rd = (float)(sz0*sqrt_2*0.5); in cvExtractSURF()423 float alpha1 = (alpha0 - beta0)*sqrt_2*0.5f, beta1 = (alpha0 + beta0)*sqrt_2*0.5f; in cvExtractSURF()