Batch Normalization 

Foveated Vision and Non-Uniform Patch Sampling\citep{Ghafoorian_2016}

\(P_{ijk}(a+ \lfloor{n/2}\rfloor,b+\lfloor{n/2}\rfloor) = I(i+l,j+m,k)\quad\text{a and b in interval}[-n/2,n/2] \)
\(l = \lfloor{a.e^{\alpha\sqrt{a^2+b^2}}}+1/2\rfloor , \quad m = \lfloor{b.e^{\alpha\sqrt{a^2+b^2}}}+1/2\rfloor\)