Hi,
I'm a game developer with over 15 years experience, mostly on consoles, but I've also done quite a bit of work with iOS and OpenGL. I believe it should be fairly straightforward for me to port your filters to ES 2.0, and this will offer significant speed improvements. It might be a bit more difficult if your filters are extremely complex, but I'd be happy to discuss this with you at any stage.
I have an extensive history of creating AAA software that has sold millions of copies, and I will bring the same dedication to create only the highest quality software to your project should you choose to work with me.
Cheers