#import "GPUImageFilterGroup.h"
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#import "GPUImageLowPassFilter.h"
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#import "GPUImageAverageColor.h"
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@interface GPUImageMotionDetector : GPUImageFilterGroup
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{
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GPUImageLowPassFilter *lowPassFilter;
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GPUImageTwoInputFilter *frameComparisonFilter;
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GPUImageAverageColor *averageColor;
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}
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// This controls the low pass filter strength used to compare the current frame with previous ones to detect motion. This ranges from 0.0 to 1.0, with a default of 0.5.
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@property(readwrite, nonatomic) CGFloat lowPassFilterStrength;
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// For every frame, this will feed back the calculated centroid of the motion, as well as a relative intensity.
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@property(nonatomic, copy) void(^motionDetectionBlock)(CGPoint motionCentroid, CGFloat motionIntensity, CMTime frameTime);
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@end
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