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Q&A Highlight regions in an image with CLI

Another possibility is to use LaTeX. There are several ways in which you could use it to add a polygon on top of an image, one way is TikZ: % !TeX program = txs:///arara % arara: pdflatex: {synct...

posted 9mo ago by samcarter‭  ·  edited 9mo ago by samcarter‭

Answer
#4: Post edited by user avatar samcarter‭ · 2023-08-22T12:02:08Z (9 months ago)
  • Another possibility is to use LaTeX. There are several ways in which you could use it to add a polygon on top of an image, one way is TikZ:
  • ```
  • \documentclass[tikz]{standalone}
  • \begin{document}
  • \begin{tikzpicture}[inner sep=0pt]
  • \node {\includegraphics{example-image-duck}};
  • \draw[red] (0.5,0.75) -- (0.75,0.5) -- (0.5,0.1) -- (0.25,0.5) -- cycle;
  • \end{tikzpicture}
  • \end{document}
  • ```
  • If you don't want to create a separate file with the LaTeX code, you can directly use it from the CLI via
  • ```
  • pdflatex "\documentclass[tikz]{standalone}\begin{document}\begin{tikzpicture}[inner sep=0pt]
  • ode {\includegraphics{example-image-duck}};\draw[red] (0.5,0.75) -- (0.75,0.5) -- (0.5,0.1) -- (0.25,0.5) -- cycle;\end{tikzpicture}\end{document}"
  • ```
  • Another possibility is to use LaTeX. There are several ways in which you could use it to add a polygon on top of an image, one way is TikZ:
  • ```
  • % !TeX program = txs:///arara
  • % arara: pdflatex: {synctex: on, interaction: nonstopmode, shell: yes}
  • \documentclass[tikz,convert]{standalone}
  • \begin{document}
  • \begin{tikzpicture}[inner sep=0pt]
  • \node {\includegraphics{example-image-duck}};
  • \draw[red] (0.5,0.75) -- (0.75,0.5) -- (0.5,0.1) -- (0.25,0.5) -- cycle;
  • \end{tikzpicture}
  • \end{document}
  • ```
  • If compiled with shell-escape enabled, this will automatically convert the resulting vector image back into a pixel graphic.
  • ---
  • If you don't want to create a separate file with the LaTeX code, you can directly use it from the CLI via
  • ```
  • pdflatex --shell-escape "\documentclass[tikz,convert]{standalone}\begin{document}\begin{tikzpicture}[inner sep=0pt]
  • ode {\includegraphics{example-image-duck}};\draw[red] (0.5,0.75) -- (0.75,0.5) -- (0.5,0.1) -- (0.25,0.5) -- cycle;\end{tikzpicture}\end{document}"
  • ```
  • See https://topanswers.xyz/tex?q=4461 for a review of tools to convert the resulting vector image back into a pixel graphic
#3: Post edited by user avatar samcarter‭ · 2023-08-22T11:52:14Z (9 months ago)
  • Another possibility is to use latex. There are several ways in which you could use it to add a polygon on top of an image, one way is TikZ:
  • ```
  • \documentclass[tikz]{standalone}
  • \begin{document}
  • \begin{tikzpicture}[inner sep=0pt]
  • \node {\includegraphics{example-image-duck}};
  • \draw[red] (0.5,0.75) -- (0.75,0.5) -- (0.5,0.1) -- (0.25,0.5) -- cycle;
  • \end{tikzpicture}
  • \end{document}
  • ```
  • If you don't want to create a separate file with the LaTeX code, you can directly use it from the CLI via
  • ```
  • pdflatex "\documentclass[tikz]{standalone}\begin{document}\begin{tikzpicture}[inner sep=0pt]\node {\includegraphics{example-image-duck}};\draw[red] (0.5,0.75) -- (0.75,0.5) -- (0.5,0.1) -- (0.25,0.5) -- cycle;\end{tikzpicture}\end{document}"
  • ```
  • Another possibility is to use LaTeX. There are several ways in which you could use it to add a polygon on top of an image, one way is TikZ:
  • ```
  • \documentclass[tikz]{standalone}
  • \begin{document}
  • \begin{tikzpicture}[inner sep=0pt]
  • \node {\includegraphics{example-image-duck}};
  • \draw[red] (0.5,0.75) -- (0.75,0.5) -- (0.5,0.1) -- (0.25,0.5) -- cycle;
  • \end{tikzpicture}
  • \end{document}
  • ```
  • If you don't want to create a separate file with the LaTeX code, you can directly use it from the CLI via
  • ```
  • pdflatex "\documentclass[tikz]{standalone}\begin{document}\begin{tikzpicture}[inner sep=0pt]\node {\includegraphics{example-image-duck}};\draw[red] (0.5,0.75) -- (0.75,0.5) -- (0.5,0.1) -- (0.25,0.5) -- cycle;\end{tikzpicture}\end{document}"
  • ```
#2: Post edited by user avatar samcarter‭ · 2023-08-22T10:12:43Z (9 months ago)
  • Another possibility is to use latex. There are several ways in which you could use it to add a polygon on top of an image, one way is TikZ:
  • ```
  • \documentclass[tikz]{standalone}
  • \begin{document}
  • \begin{tikzpicture}[inner sep=0pt]
  • ode {\includegraphics{example-image-duck}};
  • \draw[red] (0.5,0.75) -- (0.75,0.5) -- (0.5,0.1) -- (0.25,0.5) -- cycle;
  • \end{tikzpicture}
  • \end{document}
  • ```
  • If you don't want to create a separate file with the LaTeX code, you can directly use it from the CLI via
  • ```
  • pdflatex "\documentclass[tikz]{standalone}\begin{document}\begin{tikzpicture}[inner sep=0pt]\node {\includegraphics{example-image-duck}};\draw[red] (0.5,0.75) -- (0.75,0.5) -- (0.5,0.1) -- (0.25,0.5) -- cycle;\end{tikzpicture}\end{document}"
  • ```
  • Another possibility is to use latex. There are several ways in which you could use it to add a polygon on top of an image, one way is TikZ:
  • ```
  • \documentclass[tikz]{standalone}
  • \begin{document}
  • \begin{tikzpicture}[inner sep=0pt]
  • ode {\includegraphics{example-image-duck}};
  • \draw[red] (0.5,0.75) -- (0.75,0.5) -- (0.5,0.1) -- (0.25,0.5) -- cycle;
  • \end{tikzpicture}
  • \end{document}
  • ```
  • If you don't want to create a separate file with the LaTeX code, you can directly use it from the CLI via
  • ```
  • pdflatex "\documentclass[tikz]{standalone}\begin{document}\begin{tikzpicture}[inner sep=0pt]\node {\includegraphics{example-image-duck}};\draw[red] (0.5,0.75) -- (0.75,0.5) -- (0.5,0.1) -- (0.25,0.5) -- cycle;\end{tikzpicture}\end{document}"
  • ```
#1: Initial revision by user avatar samcarter‭ · 2023-08-22T10:12:26Z (9 months ago)
Another possibility is to use latex. There are several ways in which you could use it to add a polygon on top of an image, one way is TikZ:

```
\documentclass[tikz]{standalone}

\begin{document}

\begin{tikzpicture}[inner sep=0pt]
\node {\includegraphics{example-image-duck}};
\draw[red] (0.5,0.75) -- (0.75,0.5) -- (0.5,0.1) -- (0.25,0.5) -- cycle;
\end{tikzpicture}

\end{document}
```

If you don't want to create a separate file with the LaTeX code, you can directly use it from the CLI via

```
pdflatex "\documentclass[tikz]{standalone}\begin{document}\begin{tikzpicture}[inner sep=0pt]\node {\includegraphics{example-image-duck}};\draw[red] (0.5,0.75) -- (0.75,0.5) -- (0.5,0.1) -- (0.25,0.5) -- cycle;\end{tikzpicture}\end{document}"
```