This month I've been working on an image processing application that takes images and converts them to fully supported, contiguous stencils for woodworking, paper-craft, jack o' lantern carving, and more. It can do this either automatically, or through a guided process. I'd hoped to finish it before September hit, not happening. Figured I'd throw up a post describing some of what I have so far.
I'm continuing to use my custom JavaFX windows. I'm using a much lighter color scheme this time around. I've written algorithms for Color Balance, Gaussian Smoothing, Otsu Binarization, Sobel Edge Detection, as well as some binary morphological image transforms (Manhattan dilate&erode, close, open, invert, edge find, Tarjan connected component search). There are so many cool mathematical operators out there for applying to images. I really want to keep going, but I think I'm going to refrain from writing any more myself. I'd really like to have Fourier band pass filtering. Might go back some time and incorporate a few of OpenCV's free to use image operations.
I also had to write custom code for the paint tools. They've been problematic. I'm using a JavaFX Canvas for the working area and it loves to anti-alias everything. There are no rendering hints that would allow me to customize this behavior. I'll make a post if I find a way around this, but at the moment it appears I'll need to try some other option.
I'll try to get a video and .jar file up some time in September/October. That way it'll be useful for making custom jack 'o lantern patterns. I shouldn't have to write installers unless I start incorporating native libraries.
Update: Haven't done any more work on this project. I might come back to it once I've played around with Java 8 some more. At the moment though there are enough minor canvas problems that they've added up to kill my initiative.