Added replication function

replicate.m

+function LFRef = replicate(LFRef,ResOff)
+%REPLICATE Summary of this function goes here
+%   Detailed explanation goes here
+
+LFSize = size(LFRef);
+ImgSize = LFSize(1:3);
+ImgRes  = LFSize(4:end);
+ResOff = num2cell(ResOff);
+
+LFRef  = reshape(LFRef,prod(ImgSize),prod(ImgRes));
+LFRef = utils.replicate(LFRef,sub2ind(ImgRes,ResOff{:}));
+LFRef  = reshape(LFRef ,[ImgSize,ImgRes]);
+
+end
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