1.原理:
GPUImage是一個鏈(chain),? ? source -> phase1 target -> phase2 target -> final target
第一個環節是source, 這是一些GPUImageOutput的子類.包括:
(1). GPUImageVideoCamera (for live video from an iOS camera)
(2.) GPUImageStillCamera (for taking photos with the camera)
(3). GPUImagePicture (for still images)
(4). GPUImageMovie (for movies). S
后續環節是被稱為target.? 遵循GPUImageInput protocol
可用多個source到一個target上面進行blend,? 也可用進行分支, 添加多個target.
一般的target可分為兩類
(1)中間環節的target,? 一般是各種filter, 是GPUImageFilter或者是子類.
(2)最終環節的target, 可用是GPUImageView, 或者GPUImageMovieWriter
2.內置濾鏡列表
共125個濾鏡, 分為四類
Color adjustments:? 31 filters, 顏色處理相關
Image processing:? 40 filters, 圖像處理相關.
Blending modes:? ? 29 filters,? 混合模式相關.
Visual effects:? ? 25 filters,? 視覺效果相關.
125種濾鏡列表
Color adjustments:? 31 filters 顏色處理相關
GPUImageBrightnessFilter
GPUImageExposureFilter
GPUImageContrastFilter
GPUImageSaturationFilter
GPUImageGammaFilter
GPUImageLevelsFilter
GPUImageColorMatrixFilter
GPUImageRGBFilter
GPUImageHueFilter
GPUImageToneCurveFilter
GPUImageHighlightShadowFilter
GPUImageLookupFilter
GPUImageAmatorkaFilter
GPUImageMissEtikateFilter
GPUImageSoftEleganceFilter
GPUImageColorInvertFilter
GPUImageGrayscaleFilter
GPUImageMonochromeFilter
GPUImageFalseColorFilter
GPUImageHazeFilter
GPUImageSepiaFilter
GPUImageOpacityFilter
GPUImageSolidColorGenerator
GPUImageLuminanceThresholdFilter
GPUImageAdaptiveThresholdFilter
GPUImageAverageLuminanceThresholdFilter
GPUImageHistogramFilter
GPUImageHistogramGenerator
GPUImageAverageColor
GPUImageLuminosity
GPUImageChromaKeyFilter
Image processing:? 40 filters 圖像處理相關.
GPUImageTransformFilter
GPUImageCropFilter
GPUImageLanczosResamplingFilter
GPUImageSharpenFilter
GPUImageUnsharpMaskFilter
GPUImageGaussianBlurFilter
GPUImageBoxBlurFilter
GPUImageSingleComponentGaussianBlurFilter
GPUImageGaussianSelectiveBlurFilter
GPUImageGaussianBlurPositionFilter
GPUImageiOSBlurFilter
GPUImageMedianFilter
GPUImageBilateralFilter
GPUImageTiltShiftFilter
GPUImage3x3ConvolutionFilter
GPUImageSobelEdgeDetectionFilter
GPUImagePrewittEdgeDetectionFilter
GPUImageThresholdEdgeDetectionFilter
GPUImageCannyEdgeDetectionFilter
GPUImageHarrisCornerDetectionFilter
GPUImageNobleCornerDetectionFilter
GPUImageShiTomasiCornerDetectionFilter
GPUImageNonMaximumSuppressionFilter
GPUImageXYDerivativeFilter
GPUImageCrosshairGenerator
GPUImageDilationFilter
GPUImageRGBDilationFilter
GPUImageErosionFilter
GPUImageRGBErosionFilter
GPUImageOpeningFilter
GPUImageRGBOpeningFilter
GPUImageClosingFilter
GPUImageRGBClosingFilter
GPUImageLocalBinaryPatternFilter
GPUImageLowPassFilter
GPUImageHighPassFilter
GPUImageMotionDetector
GPUImageHoughTransformLineDetector
GPUImageLineGenerator
GPUImageMotionBlurFilter
Blending modes: 29 filters 混合模式相關
GPUImageZoomBlurFilter
GPUImageChromaKeyBlendFilter
GPUImageDissolveBlendFilter
GPUImageMultiplyBlendFilter
GPUImageAddBlendFilter
GPUImageSubtractBlendFilter
GPUImageDivideBlendFilter
GPUImageOverlayBlendFilter
GPUImageDarkenBlendFilter
GPUImageLightenBlendFilter
GPUImageColorBurnBlendFilter
GPUImageColorDodgeBlendFilter
GPUImageScreenBlendFilter
GPUImageExclusionBlendFilter
GPUImageDifferenceBlendFilter
GPUImageHardLightBlendFilter
GPUImageSoftLightBlendFilter
GPUImageAlphaBlendFilter
GPUImageSourceOverBlendFilter
GPUImageColorBurnBlendFilter
GPUImageColorDodgeBlendFilter
GPUImageNormalBlendFilter
GPUImageColorBlendFilter
GPUImageHueBlendFilter
GPUImageSaturationBlendFilter
GPUImageLuminosityBlendFilter
GPUImageLinearBurnBlendFilter
GPUImagePoissonBlendFilter
GPUImageMaskFilter
Visual effects: 25 filters 視覺效果相關
