iphone - Sharpen UIImage

Question

I want to sharpen images in my app.

I found this post

how to sharp/blur an uiimage in iphone?

and also had a look at Apple's sample

GLImageProcessing

But that OpenGL ES thing killed my brain cells a lot and I still don't get it.

So, Can anyone pls give me a piece of helper code to sharpen an UIImage?

Thanks

+1 For But that OpenGL ES thing killed my brain cells a lot and I still don't get it, that is ammusing.. :) — rptwsthi, Apr 12 '13 at 11:43
So which lib did you end up using? I'm losing brain cells myself! — tipycalFlow, Aug 28 '13 at 12:25

score 3 · Accepted Answer · answered Jul 29 '11 at 10:16

3

This library might be just what you need - it has an image sharpen method. Just came across it myself, haven't tried it yet. Let me know if it works ;)

https://github.com/esilverberg/ios-image-filters

answered Jul 29 '11 at 10:16

adriaan

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3

it is working, but too slow. 6 secs for an image with 600 * 400 – Jackson Tale Aug 02 '11 at 13:30

iphone - Sharpen UIImage

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