Reduce resolution of iphone camera pictures?

I'm building an app that can upload users' photos to a webservice, and with very high resolution images, this can be both very slow and data intensive. I was wondering if there was a way to reduce the camera resolution for my app, or reduce the resolution of the images I g开发者_如何学编程et back from the UIImagePickerController. I have compressed the images as much as I can before submitting them, but this is still very slow, especially on 3G connections.

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See this post: What's the easiest way to resize/optimize an image size with the iPhone SDK?

You'll need to resize the image yourself before you upload the image if you want to speed up the upload process.