[Tex/LaTex] Converting a image file into a TikZ figure

graphicstikz-pgf

Is there any possibility to convert an image file into TikZ/qTikZ code?
May be I can give the image I want.

Not only this picture, I have to convert lot. Because if we are working with JPG files it is giving so large file when we are going for a book and all.

And if we are working with TikZ fils its easy to work with and its giving less memory file only.

Best Answer

Short answer: No. Just keep using \includegraphics with your jpeg files.

Longer answer:

use something like inkscape or potrace (a command-line tool that has been assimilated into inkscape) to convert to some form of vector graphic (e.g. svg)
use something like SVG2TikZ to convert to tikz code
write and debug a script to batch-convert each image in your image folder into tikz code
start inserting large chunks of tikz into your document
realise that you have larger pdf files and worse-looking graphics
go back to using includegraphics with your jpeg files.

(Posted as community wiki, since it is a summary/extension of the partial answers posted as comments above... also, since it is not terribly helpful.)

Related Solutions

[Tex/LaTex] Including TikZ image (with external inputs) inside adjustbox adds horisontal spacing, why

The linebreak after \input gives the extra space, which can be removed by adding a % at the end of that line. Similarly, you can add % after \adjustbox{ and \end{tikzpicture} to remove the remaining space.

enter image description here

\documentclass{article}
\usepackage{tikz,adjustbox}
\begin{document}
\adjustbox{max width=\textwidth,bgcolor=blue}{
   \input{testinp}
  \begin{tikzpicture}[]
    \draw[fill=blue!20] (0,0) rectangle (3,1);
  \end{tikzpicture}
}
\adjustbox{max width=\textwidth,bgcolor=blue}{%
   \input{testinp}%
  \begin{tikzpicture}[]
    \draw[fill=blue!20] (0,0) rectangle (3,1);
  \end{tikzpicture}%
}
\end{document}

As commented by Martin, the adjustbox environment ignores spaces at its beginning and end, so the following will give the same result as the second \adjustbox in the above example.

\begin{adjustbox}{max width=\textwidth,bgcolor=blue}
   \input{testinp}%
  \begin{tikzpicture}[]
    \draw[fill=blue!20] (0,0) rectangle (3,1);
  \end{tikzpicture}
\end{adjustbox}

For reference, a few questions related to end-of-line %s:

[Tex/LaTex] Caching includegraphics{} image files for speed

Repeated use of an image

The driver pdftex.def for package graphics reuses an image, if it was used before. Thus there is no much room for optimization left. A reason for using \includegraphics rather than primitive commands.

PNG files

There are two ways, PNG images are included by pdfTeX:

The image data are uncompressed and compressed again in a PDF image object. This is slow depending on \pdfcompresslevel or faster, but with large file size.
Sometimes pdfTeX can just copy the PNG image data. Then you can find "(PNG copy)" next to the image name in the console/.log file output. But there are lots of requirements:
- PDF minor version must be greater than 1 (default is greater).
- Image must be non-interlaced.
- The only supported color types are "gray" and "RGB".
- The "gamma" value is restricted to 100000 if present.
- And the image should not contain any of these chunks: cHRM, iCCP, sBIT, sRGB, bKGD, tRNS, sPLT.
- Transparency or alpha channel is not supported.
I derived the reasons from the source file writepng.c, function write_png.

Thus you can try to optimize the PNG generation that pdfTeX can use the method "PNG copy" for including the image files.

JPEG files

The PDF format supports the compression method in JPEG files, thus pdfTeX just copies the data.