OCTOBER 12, 2001
Post Processing in Studio Artist
Using autorotoscoping tools on 3D animations
David Nagel
Page 4 of 6

The benefit of applying a threshold to the background is that, no matter how abstract your composition gets, there's still a hint of the referential in there; there's still something recognizable as an object that's being animated.

2. Next I wanted to apply a Paint Patch that would pretty much destroy the threshold image, while just leaving enough to hint at it. [an error occurred while processing this directive]

For this I chose the present called "Color Flower Scatter" under the Edge Autodraw category. But I made a slight modification by going into the Paint Synthesizer in the Path Application palette. I changed the "Prob" to "WhiteCanvasProbErr." This ensures that the pencil strokes avoid the while areas of my canvas while conforming themselves to my non-white curves. (You could also use an alpha channel, but my technique will help you avoid any hard edges.)

3. Next I applied some crayon to the image—not too much, but just enough to rough up the background a bit and bring in a little more color to my subject.



This preset can be found under "Crayon > Crackle 1" in the Presets menu.

4. The next step is probably unnecessary, but I wanted to add a little edge. So I used an outlining pencil, let it run for about a second, and then stopped it. In the end, the outline will not be visible, but this addition of a dark gray will provide almost an edge shadow to the image.



This is the "Edge Autodraw" preset in the Pencils category. I applied it for a little less than a second.

5. The next step just involves bringing in a little more color and texture to my image. I'm applying a rough style (download here) just to the subject using, as before, the WhiteCanvasProbErr setting under Path Application. I let it run about four seconds.



6. Next I'm using the same Paint Patch, but I'm applying it across the entire canvas. While my primary concern is the final appearance of my subject, I also didn't want to neglect the background. In this case, my background is white, so I just wanted to add a little texture. Since you're using the same preset as in the previous step, make sure you set the Prob back to Pressure.





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