This is a StackBlur implementation for iOS based on the algorithm of:
http://incubator.quasimondo.com/processing/fast_blur_deluxe.php
by Mario Klingemann
To use it, just import the UIImage+StackBlur.h and .m in your project.
Then, to blur an image:
UIImage *newIma=[oldIma stackBlur:radius];
You can also apply the method to a buffer directly if you dont'have access to the full UIImage (see applyStackBlurToBuffer)
The algorithm expect an RGBA format (32 bits/pixel).
If it's not the case, the image will be transformed in a 32 bits/pixel format at each call. You can also use the [UIImage normalize] function of the library to do it once
UIImage *myIma=[[UIImage imageNamed:@"blackWhite.png"] normalized];
...
UIImage *blurIma=[myIm stackBlur:radius];
Radius must be higher than 1 ...
thomas.landspurg@gmail.com
License: New BSD license.