While it would be neat with some image processing operation to do it, it can be done relatively easy, using this technique:

What i'm doing:
* Use magic wand to select select transparency
* selection->inverse selection
* make duplicate of character layer
* use fill or brush tool with large brush to fill selection with black
* copy bottom layer (the black outline) to your clipboard
* paste your selection onto canvas and use offset tool or transformation tool to position.