gusucode.com > 用粒子滤波算法进行跟踪的matlab代码 > gmm_utilities/gmm_marginal.m

    function g = gmm_marginal(g, idx)
% Marginal is obtained by simply extracting the mean and variance of the
% required components.

g.x = g.x(idx, :);
g.P = g.P(idx,idx,:);