def TaylorApprox(params,s,x,y):
    a,b,c,d,e,f,g,h = params
    return a*s*s + b*x*x + c*y*y + d*x*y + e*s + f*x + g*y + h
a*s*s + b*x*x + c*y*y + d*x*y + e*s + f*x + g*y + h
dataset/ETHPy150Open bolme/pyvision/src/pyvision/point/DetectorDOG.py/TaylorApprox