GIMP

HOWTO:

Batch Image Manipulation (BIMP)

To undertake the manipulation of batches of images a plugin requires installing:

Downloads:

• Windows EXE file
• Linux source code
• Apple OS X - The plugin baked in to the default native build of GIMP for Mac OS X available here, however, it's not guaranteed to be the very latest version.

Under Linux the plugin requires installation of the following dependencies:

sudo apt-get install libgimp2.0-dev libpcre3-dev

To install under Linux navigate in the terminal to the folder you have extracted it to, then run one of the following depending on your system:

make && make install
make && sudo make install-admin

Once installed the plugin can be accessed via the File menu:

The plugin can undertake a variety of functions:

Thanks go to Alessandro Francesconi for producing the plugin.

Borders On Selections

• Choose circle selection tool
• Begin drawing
• Hold down SHIFT to keep it round
• Let go when large enough
• Move into position
• Choose Foreground Colour
• Edit > Stroke Selection
• Hit OK

Thanks to GIMP Tutorials.

Replace All Pixels Of One Colour

• Menu --> Select --> By Colour

• Reduce the 'Threshold' count to zero
• Click on a pixel of the colour to be replaced
• Use the bucket tool to fill the select pixels with your chosen colour, remembering to select the option "Fill whole selection" in the Bucket fill tool

Thanks to Andrés Mejía.