I’ve enrolled in a course at Quilt University on fabric portraits. It’s given by Marilyn Belford, who has made many award-winning fabric portraits. I’m going to make a fabric portrait of my Dad from this photo. To make a pattern for the quilt, I need to take a photograph of the subject and posterize it. After that, I have to trace round some of the contours to mark out the pieces I am going to patch.
Posterizing the picture was straight forward. I used The Gimp, which I downloaded from Wilber loves Apple and installed without problems under Leopard (OS X 10.5.5).

I had expected that I would be able to use The Gimp to draw my lines too, and indeed it does draw lines very well. Unfortunately, being a pixel editor, it doesn’t allow you to change the format of the line after it has been drawn - I wanted to change the color and make some lines dotted. So I had to do some research on the internet to find an easy-to-use vector graphic editor to allow me to manipulate lines after I’d drawn them.
What I found was Inkscape, which - like The Gimp - is open source and free of charge. Inkscape is a darned sight easier to learn to use than The Gimp, which is powerful and correspondingly complicated to use! You can import a JPG posterised photograph and trace the lines over the photo. The best is to create a separate layer for the lines, then you can blend out the photo when you’ve finished and add a layer with a plain white background. I found quite a bit of information on the web, but the two documents I referred to most are:
Tavmjong Bah’s Inkscape: Guide to a Vector Drawing Program
Deviant Art’s Quick Guide to Inkscape.
Here’s a not very good image of my line drawing produced in Inkscape.
