Ok, so we’ve still got a lot of work to do from here on (like making a distributable library package, for example), but this evening Stéphane and I at least got a pretty decent little edge detection example working with OpenCV humming along quite nicely inside of Processing. So we’re ready for the workshop that starts tomorrow. Of course, there are other libraries that already do this inside of Processing, but this will open a lot of future doors, so we're pretty happy. Here’s a quick snapshot before I go to bed:

OpenCV + Processing