GIMP/Removal of Unwanted Elements in the Image
Often there is a need to remove unwanted elements in a image, such as the background. There are multiple methods.
Method 1: Magic Wand
An easy method is to use the Magic Wand selection tool.
- Firstly, right click on the layer you are working on and add an alpha channel if there is not already one. (Select Layer, Transparency, Add Alpha Channel.)
- Now switch to the Magic Wand tool. Make sure the mode is set to Add to the current selection. (Mode is on Toolbox palette, just below "Fuzzy select")
- Select all the parts that you want to erase by simply clicking in the area.
- Press Delete..
Method 2: Colour to Alpha
An alternative method is Colour to Alpha. This method works better with logos with less than 5 colours.
- Firstly, right click on the layer you are working on and add an alpha channel if required.
- Select <Image> Colours > Colour to Alpha.
- Set the colour after the "From:" label to the colour that you would like to remove.
- Click OK.
- Repeat steps 1-4 for any other colours that you need to remove.
Method 3: Foreground Select
A new method is the Foreground Select tool. This is best when there is only one thing in the foreground which you want to keep.
- Firstly, select the Foreground Select tool.
- Mark out a rough area around the foreground.
- Scribble in the foreground only. Repeat scribbling until the coloured boundary is tightly around the foreground.
- Press ENTER.
- Go to <Image> Select > Invert.
- Press Delete.