Yea.. the Hue i figured it out, but.. er.. i got an app doing that so cannot be shared. lol.
to blur is easy, you just set pixel 1 to be the average of pixel 1 and pixel 2. there are many types of blurring, but averaging is simplest and it works.
to sharpen, you need to enhance the difference between the 2 pixels if the difference is big. i could share but.. er. also have an app doing that too.. hehe sorry. i can only summarise what it does.