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,:);