Recovers passwords from pixelized screenshots

Depix is a tool for recovering passwords from pixelized screenshots.

This implementation works on pixelized images that were created with a linear box filter.

Installation

• Clone the repo:

git clone https://github.com/beurtschipper/Depix.git
cd Depix

• Install the dependencies:

python -m pip install -r requirements.txt

• Run Depix:

python depix.py -p /path/to/your/input/image.png -s images/searchimages/debruinseq_notepad_Windows10_closeAndSpaced.png -o /path/to/your/output.png

Example usage

• Depixelize example image created with Notepad and pixelized with Greenshot. Greenshot averages by averaging the gamma-encoded 0–255 values, which is Depix’s default mode.

python3 depix.py -p images/testimages/testimage3_pixels.png -s images/searchimages/debruinseq_notepad_Windows10_closeAndSpaced.png

Result:

• Depixelize example image created with Sublime and pixelized with Gimp, where averaging is done in linear sRGB. The backgroundcolor option filters out the background color of the editor.

python3 depix.py -p images/testimages/sublime_screenshot_pixels_gimp.png -s images/searchimages/debruin_sublime_Linux_small.png --backgroundcolor 40,41,35 --averagetype linear

Result:

In this article I cover background information on pixelization and similar research.