tikzstyles.tex

\usetikzlibrary{shapes}
\usetikzlibrary{arrows}
\usetikzlibrary{fit}
\usetikzlibrary{positioning}
\usetikzlibrary{shadows}
\usetikzlibrary{calc}
\usetikzlibrary{backgrounds}
\usetikzlibrary{matrix}
\usetikzlibrary{matrix.skeleton}

% factor graphs
\tikzstyle{var}=
  [circle,fill=white!90!gray,draw=black,inner sep=3pt]
\tikzstyle{factor}=
  [rectangle,fill=gray!50!white,draw=black,inner sep=5pt]
\tikzstyle{region}=
  [rounded rectangle,opacity=0.5]

\tikzstyle{process}=[
  single arrow,
  single arrow head extend=0.125cm,
  inner sep=1pt,
  minimum height=0.5cm,
  fill=gray]

\tikzstyle{coordinate-axis}=[color=gray,->]
\tikzstyle{detection}=[]
\tikzstyle{line-to-neighbor}=[thin]
\tikzstyle{line-to-neighbor-other}=[thin,color=gray]
\tikzstyle{marks}=[very thin]
\tikzstyle{background rectangle}=[fill=white]

\tikzstyle{motion-vector}=[thin,->]
\tikzstyle{p-pt}=[detection,color=red!50!black]
\tikzstyle{p-mv}=[motion-vector,color=red!50!black]
\tikzstyle{p-est-mv}=[motion-vector,color=red!50!black,densely dashed]
\tikzstyle{q-pt}=[detection,color=black]
\tikzstyle{q-mv}=[motion-vector,color=black]
\tikzstyle{u-pt}=[detection,color=white!40!black]

\makeatletter
\pgfdeclareradialshading{weights}{\pgfpoint{0bp}{0bp}}{%
 color(0bp)=(orange!80);
 color(10bp)=(orange!40);
 color(26bp)=(white)}
\makeatother