November 2013
Intermediate to advanced
576 pages
19h 3m
English
book
iOS Components and Frameworks: Understanding the Advanced Features of the iOS SDK
by Kyle Richter, Joe Keeley
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Initializing an Image
To apply a filter to an image, Core Image requires an image to be an instance of CIImage. To get an instance of CIImage from a UIImage, a conversion to CGImage and then to CIImage is needed. In ICFFilterViewController, the tableView:cellForRowAtIndexPath: method handles the inputImage by checking with the filter delegate to get either the starting image or the image from the previous filter. The filter delegate keeps an array of UIImages, which it will use to return the last image from the imageWithLastFilterApplied method.
If the starting image is provided, it is converted to CGImage and then used to create a CIImage. If the input image is from another filter, it is safe to assume that UIImage has an associated CIImage ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.