library for image processing using vDSP

[maddogsoftware]

Hey guys,

Just a quick note to mention I've released a small library to enable easy fast image processing on UIImage using the vDSP/Accelerate framework for iOS.

Basically it gives you hardware accelerated blur/emboss/sharpen as easy as:

UIImage* src = [UIImage imageNamed:@"image.png"];
UIImage* blurred = [src imageByApplyingGaussianBlur3x3];

I've posted it to github in the hope that people here can get some use out of it. If you do use out of it I'd love to hear about it!

Full writeup here:
UIImage processing using vDSP/Accelerate framework Mad-Dog-Software

For the impatient ones:
https://github.com/gdawg/uiimage-dsp

If you're interested in seeing it at work I've used it in my Bokeh Booth app and intend to use in others in the future.
Bokeh Booth for iPhone, iPod touch, and iPad on the iTunes App Store

[Hollance]

Cool, looks very nice. Thanks for sharing!

[mgaldieri]

Hi!

I know this is kind of an old thread, but still... What is the difference between using vDSP convolutions and vImage convolutions?

Thanks!

[maddogsoftware]

Originally Posted by mgaldieri

Hi!

I know this is kind of an old thread, but still... What is the difference between using vDSP convolutions and vImage convolutions?

Thanks!

The vImage routines are all the new ones which are available with ios5 onwards.

These are probably the best ones to use going forward but I probably wouldn't use them in a production app yet because I like to support at least one backlevel ios major version (so currently ios4).

If you're just doing ios5 stuff the functionality looks awesome but for the earlier versions something like my library's not a bad bet!

[mgaldieri]

Originally Posted by maddogsoftware

The vImage routines are all the new ones which are available with ios5 onwards.

These are probably the best ones to use going forward but I probably wouldn't use them in a production app yet because I like to support at least one backlevel ios major version (so currently ios4).

If you're just doing ios5 stuff the functionality looks awesome but for the earlier versions something like my library's not a bad bet!

Wow! Didn't know vImage wasn't available before iOS 5! Good to know it's looking good though, because I already started coding using vImage!

BTW, I played a little with your library and it's awesome. I'm just not using it for this particular project because I'm trying to build a real-time edge detection algorithm and need to squeeze as much performance as possible. But I'm considering forking it into a vImage version for iOS 5 devices.

Thanks a bunch, MadDog!

[maddogsoftware]

no probs let us all know how your project goes!

[som3on3]

That looks cool, how did your project end up?