Can anyone suggest Matlab code for adaptive resampling in particle filter used for objct tracking in video?

I am using particle filter for tracking object in the video using Lab and HSV color spaces. I want to use adaptive resampling approach in order to make tracking process free of errors due to occlusion/overlapping. The code used by me for resampling is given below:

function X = resample_particles(X, L_log)

% Calculating Cumulative Distribution

L = exp(L_log - max(L_log));

Q = L / sum(L, 2);

R = cumsum(Q, 2);

% Generating Random Numbers N = size(X, 2);

T = rand(1, N);

% Resampling [~, I] = histc(T, R);

X = X(:, I + 1);

end

Please suggest me code to perform adaptive resampling algorithm to eliminate effect of occlusion/ overlapping.