Unknown parameter 'averageImage'

[muhammadhanif1]

if numel(p) ~= 1
if merge % Merge unknown fields, instead of erroring or leaving it
field = param ;
elseif nargout <= 1
error('Unknown parameter ''%s''', param) ; %%% Error
else
keep([ai,ai+1]) = true ;
ai = ai + 2 ;
continue ;
end
else
field = optNames{p} ;
end

[layumi]

averageImage is the mean of the three-channel images.
In particular, you may check this line.
https://github.com/layumi/Pedestrian_Alignment/blob/master/train_id_net_res_market_new.m#L17