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Lucas Fidon edited subsection_Approximation_of_probability_distribution__.tex
almost 8 years ago
Commit id: 759b2216069adaa6434a977f40736656d7dcc1c1
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Given a trajectory $T$, the probability $p(x,y)$ of $(x,y)$ is the sum of the contribution of each $(x',y')$ in $T$. The contributions are functions of a Gaussian kernel.
Hence the following definition of the probability of $(x,y)$ given $T$:
\[P((x,y),T) \[P_{PW}((x,y),T) = \sum_{(x',y')\in T}K((x,y),(x',y'))\]
where $K$ is a gaussian kernel. In practice we take a discrete gaussian kernel filter for $K$, given by the 3x3 matrix:
\[ M_{K} = \left| \begin{array}{ccc}