Gimp - Selective Colorization

puppy before
Before
puppy after
After


A popular image editing technique is to use grayscale for part of an image and keep the other part of an image in color.

  1. Download the big puppy here.
    Or can you find an image from one of these copyright free sources
  2. Open the file. Then continue by duplicating layer (LAYER/Duplicate Layer).
  3. Click COLORS/Desaturate/Desaturate to turn the layer into grayscale.
  4. Add a layer mask by right clicking on the layer in the Layer Panel. Then choose Add Layer Mask.  (Or LAYER/Mask/Add Layer Mask). Keep the choice of White (Full Opacity). Now look at your layer panel and see a white mask thumbnail to the right of your layer thumbnail.
  5. Change your foreground color to black.
  6. Choose the Paintbrush Tool. In the Options panel, you can change the size and hardness of the brush.
  7. Paint over the part that you want to “re-color.” 
  8. If you paint over too much of the image, simply switch your foreground to white and paint over that part.
  9. From the Layers Panel, add a new layer. Choose “Transparent” as the type.
  10. On the new layer, usse Rectangular Selection to create a box.
    (Gimp does not have a Shape tool.)
  11. Fill your rectangle with a color by using the Paint Bucket.
  12. Reduce the opacity of your rectangle. Opacity is located in the Layers panel
  13. Type Text on the top layer. (Notice that Text makes its own layer).
  14. To add drop shadow to your text, click FILTER/Light and Shadow/Drop Shadow.
  15. Feel free to add or enhance your design in any way you wish.
  16. For Fall 2018, you will submit the JPG version of this. (FILE/Export).