79 lines
3.0 KiB
Plaintext
79 lines
3.0 KiB
Plaintext
\newcommand{\scale}{1.2}
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\newcommand{\xfshift}{4cm}
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\begin{tikzpicture}
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\begin{scope}[scale=\scale]
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\tikzstyle{refmv_line}=[thick,draw=black]
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\tikzstyle{refmv}=[refmv_line,-latex,densely dashed]
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\tikzstyle{refmv_0}=[refmv,]
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\tikzstyle{refmv_1}=[refmv_0]
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\newcommand{\DrawFrame}[2]
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{
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\fill[fill=#1,fill opacity=.6] (0,0) rectangle (#2+1,#2+1); % Opacity
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\draw[thick] (0,0) rectangle (#2+1,#2+1);
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\foreach \x in {1,...,#2}
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\draw (\x,0) -- ++(0,#2+1);
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\foreach \y in {1,...,#2}
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\draw (0,\y) -- ++(#2+1,0);
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}
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% Frame t
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\begin{scope}[yshift=2*\TikZyfshift, xshift=2*\xfshift, yslant=\TikZyslant,xscale=\TikZxscale]
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\coordinate (T0B1) at (0.5-0.25,2.5+0.25);
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\coordinate (T0B2) at (1.5,2.5);
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\coordinate (T0B3) at (2.5,2.5);
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\coordinate (T0B4) at (0.5,1.5);
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\coordinate (T0B5) at (1.5,1.5);
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\coordinate (T0B6) at (2.5,1.5);
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\coordinate (T0B7) at (0.5,0.5);
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\coordinate (T0B8) at (1.5,0.5);
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\coordinate (T0B9) at (2.5,0.5);
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\DrawFrame{white}{2}
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\foreach \x in {0,2}
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\foreach \y in {0,2}
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\draw[fill=gray!40,fill opacity=0.6] (\x,\y) +(0,0) rectangle ++(1,1);
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\draw[fill=gray!40,fill opacity=0.6] (1,1) +(0,0) rectangle ++(1,1);
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\begin{scope}[yshift=2cm, xshift=0,scale=0.5]
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\foreach \x in {0,1}
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\foreach \y in {0,1}
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\draw (\x,\y) +(0,0) rectangle ++(1,1);
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\begin{scope}[ yshift=1cm, xshift=1cm,scale=0.5]
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\foreach \x in {0,1}
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\foreach \y in {0,1}
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\draw (\x,\y) +(0,0) rectangle ++(1,1);
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\end{scope}
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\end{scope}
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\node[font=\footnotesize, text width=3cm, text centered] () at (1.5,-0.6) {Current frame ($C$)};
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\node[scale=0.6, text width=2cm, text centered] (CTULabel) at (2.5,0.5) {CTU};
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\end{scope}
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% Frame t-1
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\begin{scope}[ yshift=1*\TikZyfshift, xshift=1*\xfshift, yslant=\TikZyslant,xscale=\TikZxscale]
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\coordinate (TM1B1) at (0.5,2.5);
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\coordinate (TM1B3) at (2.5-0.3,2.5);
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\coordinate (TM1B5) at (1.5,1.5);
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% Draw Motion vectors
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\draw[refmv] (T0B1) to (TM1B1);
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\draw[refmv_line,shorten >=28] (T0B1) to (TM1B1);
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\draw[refmv] (T0B3) to (TM1B3);
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\draw[refmv_line,shorten >=15] (T0B3) to (TM1B3);
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\draw[refmv] (T0B5) to (TM1B5);
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\draw[refmv_line,shorten >=25] (T0B5) to (TM1B5);
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\DrawFrame{gray!40}{2}
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\node[font=\footnotesize, text width=3cm, text centered] () at (1.5,-0.6) {Ref. frame 1 ($r_1$)};
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\end{scope}
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% Frame t-2
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\begin{scope}[ yshift=0*\TikZyfshift, xshift=0*\xfshift, yslant=\TikZyslant,xscale=\TikZxscale]
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\coordinate (TM2B4) at (0.5-0.2,1.5+0.2);
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\coordinate (TM2B6) at (2.5-0.1,1.5-0.1);
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\coordinate (TM2B8) at (1.5-0.3,0.5+0.3);
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\coordinate (TM2) at (1.5,1.5);
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\draw[refmv] (T0B4) to (TM2B4);
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\draw[refmv_line,shorten >=40,shorten <=79] (T0B4) to (TM2B4);
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\draw[refmv_line,shorten >=117] (T0B4) to (TM2B4);
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\draw[refmv] (T0B8) to (TM2B8);
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\draw[refmv_line,shorten >=27,shorten <=80] (T0B8) to (TM2B8);
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\draw[refmv_line,shorten >=105] (T0B8) to (TM2B8);
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\DrawFrame{white}{2}
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\node[font=\footnotesize, text width=3cm, text centered] () at (1.5,-0.6) {Ref. frame 2 ($r_2$)};
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\end{scope}
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\end{scope}
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\end{tikzpicture}
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