This is the UIImage blur effect for prior iOS 7. For iOS 8, please use UIVisualEffectView with UIVisualEffect instead.
The code is from the sample code "UIImageEffect" by Apple. Original Page.
Using CocoaPods to install:
pod 'UIImageBlurEffectCategory', :git => 'https://github.com/vc7/UIImageBlurEffectCategory.git'The copyright of the code is belongs to Apple. Please refer to the LICENSE file of this repository for more.