title: Apply filter effects to UIImage
body: <p>I have a image &amp; I want to apply some filter effects on it.
  Effects like sepia,sharpen,brightness,RGB colors,Contrast,Grayscale effect according to slider value changed. How to do this?
  If any one knows then share some amount of code.
  I got lots of solution on it but not obtain the solution on slider value changed.
  I want to apply all above filters using slider value changed.</p>