Text-deblur

The Text-deblur (zip, 601kb) Gimp plugin implements the algorithm by Pan et al (paper+matlab code) for text deblurring. It is based on the MatLab code by Pan et al, and plugs seamlessly into the open source and freely available GNU Image Manipulation Program (GIMP). The current version of the plugin was built for Linux. Windows users may experience some problems compiling the code.

• A blog post with a high-level introduction into blurring/deblurring can be found here.
• A detailed write up in Dutch is found in the BSc thesis (pdf).

Test suite

To facilitate comparisons between various image recovery tools, we have put together a test suite of 15 different source images, all of which have undergone 3 types of graphical operations (gaussian blur, pixelation and motion blur), each of which at 4 different settings. The full test suite (180 images, 71MB) is available for download.

Design

The plugin makes use of the on the OpenCV library for various maths functions and the Log4C library for logging purposes. The plugin itself is released under the GPLv3.

The plugin was written in C and C++. A design document (DOCX) is available which describes the design in more detail.

Installation instructions

• Install libgimp2.0-dev to be able to install GIMP plugins from source.
• Install OpenCV, liblog4c and intltool.
• Download the Text-deblur GIMP plugin.
• Unpack the zip.
• Open a terminal window and change directory to the unpacked zip
• Ensure that the configure file is executable:
  chmod +x configure
• Run the following commands in a text window to install the plugin:

    	autoreconf -vis
  	./configure 
  	sudo make
  	sudo make install
  	

• Start GIMP and you'll find the Text-deblur plugin at the bottom of the "Filters" menu.

Documentation & test suite

• TestSuite.zip (71 MB) - a selection of various pictures, originals and blurred in various ways, to test deblurring algorithms.
  Obviously, we ran these tests ourselves. Our results (zip, 19 MB) are also available.
• UnitTest.zip (16 MB) - Unit tests (including pictures) used for testing and building the package.
• DoxygenPackageDocumentation.zip - documentation of the source.
• Pan Text Debluring Design 20160519.docx - documentation of the design.

• Team

  The deblur plugin was developed by Ton Poppe et al., under supervision of Hugo Jonker and Sung-Shik Jongmans, with mathematical expertise provided by Evert van de Vrie.