Tuesday, April 10, 2007

Transparent backgrounds

How can you check weather an image has an alpha (transparency) channel or not?

One of the main ways that you can check if an image has a transparent backround is through the program "Gimp."



  • Use an erraser to rub out the image

If the image you erase leaves a white trail behind it, it is not transparent. However if you come across a checkard board effect, than it has a transperant background.

  • Select colour picker and click on image

With this you can see all the (RGBA) values

To add an alpha channel

Rightclick/layer/transperancy and Add Alpha Channel

No comments: