How do people perform photo filters on iPhoneOS?

Question

What do people use / do to create movies or Photoshop similar to effects on the iPhone OS? Things like B&W, sepia, cross-processing, crop, etc. I see that ImageMagick can do this with lots of futzing around, any other options?

Answer 1

ImageMagick was not a way to slow it down. The solution is to access raw byte data and change the RGB values ​​per pixel using, among other things, 5x5 matrix transforms. Here is a good place to start:

http://www.iphonedevsdk.com/forum/iphone-sdk-development/11158-share-your-image-proccessing-filter-code.html

Answer 2

Brad Larson GPUImage framework will be your best option. You can get the framework here .

Answer 3

Here is another option.

http://www.binpress.com/app/photo-effects-sdk-for-ios/801