How do I fast blur a image in Android?

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Is there a better way to fast blur a image in Android? I am trying to implement a Gaussian blur in Java, but it's not fast enough,Could anyone please give me a sample or help me a link to a guide on how to implement this.
Thank you!

Posted 8-Mar-14 15:44pm

lucherr

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BupeChombaDerrick · Accepted Answer · 2014-03-09T01:14:00

Solution 1

You might want to look at http://android-developers.blogspot.com/2013/08/renderscript-intrinsics.html[^], you can also implement a fast blur using c++ see https://www.ibm.com/developerworks/opensource/tutorials/os-androidndk/[^] but you can use optimized blurring with renderscript http://docs.xamarin.com/recipes/android/other_ux/drawing/blur_an_image_with_renderscript/[^]

Posted 9-Mar-14 1:14am

BupeChombaDerrick

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lucherr 9-Mar-14 9:26am

Thanks a lot!Actually,i've tried the renderscript, It's not fast enough,I think c++ is a better way,i'l try it

BupeChombaDerrick 9-Mar-14 11:23am

If you want very fast blurring implement box filters using integral images (summed area table) http://computersciencesource.wordpress.com/2010/09/03/computer-vision-the-integral-image/.

lucherr 9-Mar-14 21:48pm

That looks cool,but i can't open the website here,maybe i need to use vpn
Thank you!!by the way,i found a example
https://github.com/kikoso/android-stackblur

BupeChombaDerrick 11-Mar-14 11:54am

You are welcome, your link looks like a better solution :).

lucherr 12-Mar-14 1:36am

:) thanks!