deletions | additions       diff --git a/subsection_Approximation_of_probability_distribution__.tex b/subsection_Approximation_of_probability_distribution__.tex  index f5fb8ad..61670e0 100644  --- a/subsection_Approximation_of_probability_distribution__.tex  +++ b/subsection_Approximation_of_probability_distribution__.tex 
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\[P((x,y),T) = \sum_{(x',y')\in T}K((x,y),(x',y'))\]  where $K$ is a gaussian kernel. In practice we take a discrete gaussian kernel filter for $K$, given by the 3x3 matrix:  \[ K M_{K}  = \left| \begin{array}{ccc} 0.0625 & 0.125 & 0.0625 \\  0.125 & 0.25 & 0.125 \\  0.0625 & 0.125 & 0.0625 \end{array} \right|.\]