A Survey of Gaussian Convolution Algorithms

AlvarezMazorra Gaussian convolution  A firstorder recursive filter approximation, computed inplace 
Box filter Gaussian convolution  A fast lowaccuracy approximation of Gaussian convolution 
DCTbased Gaussian convolution  Convolution via multiplication in the DCT domain 
Deriche Gaussian convolution  An accurate recursive filter approximation, computed outofplace 
Extended box filter Gaussian convolution  An improvement of box filtering with continuous selection of sigma 
FIR Gaussian convolution  Approximation by finite impulse response filtering 
Stacked integral images Gaussian convolution  A sum of box filter responses, rather than a cascade 
VlietYoungVerbeek Gaussian convolution  An accurate recursive filter approximation, computed inplace 