U-Turn was a digital camera developed by Handheld Games and released by Digital Blue. On this project, I was responsible for the built in image filters, their implementation, optimization and occasional conceptualization as well as the UI needed to select them.
Another project on inexpensive embedded chips, so once again, limited break points and no floating point math. That last one actually made many of the filters impractical, since the effect had to be achievable in real-time. Mostly this involved a simple remapping of source pixels, but we needed to implement in assembly to keep the performance up.