A set of custom filters and utilities for Apple's Core Image framework.
Available on both OS X and iOS.
Involving...
##Filters
####YUCIRGBToneCurve
Adjusts tone response of the R, G, and B channels of an image.
The filter takes in an array of control points that define the spline curve for each color component, or for all three in the composite.
These are stored as CIVectors in an NSArray, with normalized X and Y coordinates from 0 to 1.
The defaults are [(0,0), (0.5,0.5), (1,1)]
####YUCIColorLookup
Uses a color lookup table (LUT) to remap the colors in an image. The default LUT can be found at Sources/YUCIColorLookupTableDefault.png
This filter may not work well in the default light-linear working color space. Use kCIContextWorkingColorSpace key to specify a working color space when creating the CIContext object.
##Utilities
####YUCIFilterConstructor
A singleton that conforms to CIFilterConstructor protocol.
Can be used in +[CIFilter registerFilterName:constructor:classAttributes:] to register a CIFilter. This filter constructor simply assume that the filterName is the class name of the custom CIFilter and calls [[FilterClass alloc] init] to construct a filter.
####YUCIMetalUtilities
+[YUCIMetalUtilities textureFromCGImage:device:]
Create a MTLTexture from a CGImageRef object.
##Based on Vivid
An implementation of High Pass Skin Smoothing