Today's tutorial is very fast because the effect is Gimp's native. Transform a RGB image in un’indexed image in two colors: white and Black. This conversion will give the image a starting effect “newspaper“.
First, we open an image that lends itself. In this tutorial I will use a landscape, despite the portraits lend themselves more.
We go to the menu: “Picture” – “Mode” – “Indexed” with the settings shown in Figure.
The result will be:
Often, however, you must make changes to the image created. It will be necessary converting the image to RGB always with the same menu. “Picture” – “Mode“- “RGB“. In this way we can also color the picture.