This seems like an old post now but I was trying to convert a photo to line drawing and thought I would share my 2 cents, might be useful to someone in 2013!
Doing all manually in photoshop took to long for me as I had 20+ images I needed to do. After some searching I found this site convert a photo to line drawing .com. Uploaded my images and it gave me a zip file with them all converted in, I had to touch up a couple as they had some trees in the background that came out a little strange but on the whole was simple.
In photoshop I did it a bit different from Rick and found it worked better to replace everything up to guassian blur with this:
Duplicate layer
Set top layer color mode to be colour dodge
Do gaussian
Then reduce saturation to 0
Then clean up as described.
Took a long time doing manual clean ups and clicking on all the settings, does anyone know how you can automate this so it can just be a single action?
Cheers,
James