gusucode.com > 用粒子滤波算法进行跟踪的matlab代码 > gmm_utilities/gmm_addition.m
function gr = gmm_addition(g1, g2) % Convolution for addition of two random variables: xr = x1+x2 % Same as gmm_convolve. D = size(g1.x, 1); M = size(g1.x, 2); N = size(g2.x, 2); R = M*N; gr.x = zeros(D,R); gr.P = zeros(D,D,R); gr.w = zeros(1,R); k=1; for i=1:M xi = g1.x(:,i); Pi = g1.P(:,:,i); wi = g1.w(i); for j=1:N gr.x(:,k) = xi + g2.x(:,j); gr.P(:,:,k) = Pi + g2.P(:,:,j); gr.w(k) = wi * g2.w(j); k = k+1; end end