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#import "GPUImageFilterGroup.h"
@class GPUImageSaturationFilter;
@class GPUImageGaussianBlurFilter;
@class GPUImageLuminanceRangeFilter;
@interface GPUImageiOSBlurFilter : GPUImageFilterGroup
GPUImageSaturationFilter *saturationFilter;
GPUImageGaussianBlurFilter *blurFilter;
GPUImageLuminanceRangeFilter *luminanceRangeFilter;
/** A radius in pixels to use for the blur, with a default of 12.0. This adjusts the sigma variable in the Gaussian distribution function.
@property (readwrite, nonatomic) CGFloat blurRadiusInPixels;
/** Saturation ranges from 0.0 (fully desaturated) to 2.0 (max saturation), with 0.8 as the normal level
@property (readwrite, nonatomic) CGFloat saturation;
/** The degree to which to downsample, then upsample the incoming image to minimize computations within the Gaussian blur, default of 4.0
@property (readwrite, nonatomic) CGFloat downsampling;
/** The degree to reduce the luminance range, from 0.0 to 1.0. Default is 0.6.
@property (readwrite, nonatomic) CGFloat rangeReductionFactor;
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