19.02.2015 Views

GIMP tools - BDA

GIMP tools - BDA

GIMP tools - BDA

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

63<br />

Reducing the value reduces the number of colours used, and the image is being stylised.<br />

Level 3 is set by default, meaning that the final image will have 8 colours.<br />

TASK. Open pan_1.jpg and reduce the number of colours by setting Posterize Levels at<br />

256 and 3.<br />

1. Open pan_1.jpg through FileOpen .<br />

2. Choose a command ColorsPosterize. A dialog bow Posterize opens.<br />

3. Using the Posterize Levels slider set the value at 3, then at 256.<br />

a) Posterize Levels = 3 b) Posterize Levels = 256<br />

Note!<br />

The lowest value of Posterize Levels is 2. It shows the smallest number of colours.<br />

Desaturate<br />

This tool converts all of the colours on the active layer into shades of grey. However, you<br />

work on all three colours of the RGB colour model. This tool is usually used when you<br />

need to turn the image into a monochrome image. You can access it through<br />

ColorsDesaturate<br />

grey based on:<br />

. In the dialog box opened you can select one of three shades of

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!