This GIMP (GNU) tutorial demonstrates how to create a Vivid Colourised Bit Map. To work along, you are welcome to download the Start Image I am working with Here. Unzip the file and open the image onto GIMP’s workspace.
You can quickly Undo a step at any time by pressing Ctrl then Z. Alternatively, click a previous Undo History snapshot - Windows then Dockable Dialogues then click Undo History. In addition, to Zoom in (or Zoom out) of your image; from the top menu, choose View then select a Zoom Tool from the subsequent drop-down
Launch GIMP & Organise Its Workspace & Palettes
Open your Start Image onto GIMP’s workspace - File then Open - Ctrl then O.
Ensure the Layers and the Undo History Palettes are visible, and then drag them into position over your workspace - (Windows then Dockable Dialogues - then click Layers and Undo History).
Now, from the top menu, choose Colours and then choose Threshold. And from the subsequent Threshold dialogue box, change just the setting highlighted below, and then click OK.
From the top menu, choose Colours and then choose Invert.
Now, from the top menu, choose Colours and then choose Colourify. And from the subsequent Colourify dialogue box, click a Solid Colour you like the look of, (or find a Custom Colour of your choice), and then click OK to apply it to your Image.
Congratulations, your Colourised Bit Map Image is complete, and it is ready to save - top menu, then File then Save As. GIMP 2.8 - File then Export.
Wendi E. M. Scarth. Top of Page.