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Core Image Filter Explorer & Showcase

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bumped swift syntax to swift 5 fixed a case where the demo would crash if a filter was unwrapped unsafely resolved swift warnings pertaining to memory safety. [more info](https://forums.swift.org/t/help-rid-of-warning-with-unsafemutablepointer-with-array-withunsafemutablepointer/34364) on...

I am implementing feature with red, orange, yellow, green, aqua, blue, purple color selection and one UISlider. I am not understanding how to use MultiBandHSV with UISlider properly. Thank you.

- update swift syntax from swift 2 to swift 4.2 - adds support for iPhone (landscape orientation only) - fix some GLSL and metal relation crashes - update .gitignore and...

Most of the edits were actually pulled from another fork I picked at random that fixed the swift 3 build issues. However, I noticed that a lot of filters has...

Any chance of publishing this for Mac OS too? I'd LOVE to help - but I'm struggling myself with applying CIFilters onto live camera input on Mac OS, and I...

In my tests, your `MetalKuwaharaFilter` is actually 50% slower then `KuwaharaFilter` however [here](https://dzone.com/articles/metal-kernel-functions-as-core-image-filter-engine) Simon mentions Metal is supposed to be 50% faster. Any idea why it is like that?

some function Attributes that override from class CIFilter must change from [String: AnyObject] to [String: Any]

## Compile on Xcode Version 8.2.1 (8C1002), swift-3 * Updated input arguments of _vImageHistogramCalculation_ARGB8888_ for Swift3 * Adjusted input arguments of _vImageHistogramSpecification_ARGB8888_ for Swift3 * Clicked a lot of "Fix...

Hello. Love your book. (We met briefly at a conference a while ago, btw.) Anyway, I've updated the project so it builds on Swift 3 with zero errors or warnings....

Hello, I tried to convert HistogramDisplay to Swift 3 but I have a problem with this lines of code: ``` let histogram = UnsafeMutablePointer(mutating: rgba) vImageHistogramCalculation_ARGB8888(&inBuffer, histogram, UInt32(kvImageNoFlags)) ``` the...