CoreImage Namespace
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The CoreImage namespace provides hardware-accelerated image processing.
Classes
| Name | Description |
|---|---|
| CIAccordionFoldTransition |
Animates a transition by creating an accordion-fold effect on the source image. |
| CIAdditionCompositing |
The CIAdditionCompositing CoreImage filter. |
| CIAffineClamp |
A CIAffineFilter that extends the border pixels to the post-transform boundaries. |
| CIAffineFilter |
An abstract class that defines a CIFilter that performs an affine transform on an image and then performs a filtering operation on the transformed image. |
| CIAffineTile |
A CIAffineFilter that tiles the transformed image. |
| CIAffineTransform |
Performs an affine transform on an image. |
| CIAreaAverage |
Produces a single-pixel image. The pixel is the average color of the input extent. |
| CIAreaAverageMaximumRed | |
| CIAreaBoundsRed | |
| CIAreaHistogram |
Creates histogram data for a given image and rectangle of interest. |
| CIAreaLogarithmicHistogram | |
| CIAreaMaximum |
Produces a single-pixel image. The pixel's components are set to the maximum of that component within the input extent. |
| CIAreaMaximumAlpha |
Returns a single-pixel image. The color is that of the pixel in the input extent with the greatest alpha value. |
| CIAreaMinimum |
Returns a single-pixel image. The pixel's components are set to the minimum of that component within the input extent. |
| CIAreaMinimumAlpha |
Returns a single-pixel image. The color is that of the pixel in the input extent with the lowest alpha value. |
| CIAreaMinMax | |
| CIAreaMinMaxRed | |
| CIAttributedTextImageGenerator |
A CIImageGenerator that generates an image from attributed text. |
| CIAttributedTextImageGeneratorProtocol_Extensions |
Extension methods to the ICIAttributedTextImageGeneratorProtocol interface to support all the methods from the CIAttributedTextImageGenerator protocol. |
| CIAutoAdjustmentFilterOptions |
When passed to GetAutoAdjustmentFilters(CIAutoAdjustmentFilterOptions), limits the results. |
| CIAztecCodeDescriptor |
A CIBarcodeDescriptor for the Aztec barcode scheme. |
| CIAztecCodeGenerator |
Generates an Aztec code for the specified Message. |
| CIBarcodeDescriptor |
Base class for barcode descriptions. Subclasses for specific schemes define relevant properties. |
| CIBarcodeGenerator |
A CIFilter that generates barcodes. |
| CIBarsSwipeTransition |
A CITransitionFilter that animates a transition by moving a bar over the source image. |
| CIBicubicScaleTransform | |
| CIBlendFilter |
An abstract CIFilter that combines a background and foreground image. |
| CIBlendKernel |
A CIColorKernel that blends images using the GPU. |
| CIBlendWithAlphaMask |
A CIBlendWithMask that uses a mask image to blend foreground and background images. |
| CIBlendWithBlueMask | |
| CIBlendWithMask |
A CIBlendFilter that uses a grayscale mask to blends its foreground and background images. |
| CIBlendWithRedMask | |
| CIBloom |
A CIFilter that creates an edge-flow effect. |
| CIBlurredRectangleGenerator | |
| CIBlurredRoundedRectangleGenerator | |
| CIBokehBlur |
A blur simulating the the unfocused background of a larger-aperture camera with an iris shutter. |
| CIBoxBlur |
Applies a blur created with a box-shaped convolution kernel. |
| CIBumpDistortion |
A CIDistortionFilter that creates a bump at the specified center point. |
| CIBumpDistortionLinear |
A filter that distorts the image around a convex or concave line. |
| CICameraCalibrationLensCorrection | |
| CICannyEdgeDetector | |
| CICheckerboardGenerator |
The CICheckerboardGenerator CoreImage filter |
| CICircleSplashDistortion |
Makes the pixels at the circumference of a circle spread out to the boundaries of the image. |
| CICircularScreen |
A CIScreenFilter that creates a circular bulls-eye-style halftone screen. |
| CICircularWrap |
Distorts the input image so that it appears as if wrapped around a transparent circle. |
| CIClamp | |
| CICmykHalftone |
Produce a color half-tone image built from cyan, magenta, yellow, and black 'inks'. |
| CICode128BarcodeGenerator |
Generates a Code 128 barcode. |
| CICodeGenerator |
Base class for code generators. |
| CIColor |
A Core Image color, including both color values and a reference to a color space. |
| CIColorAbsoluteDifference | |
| CIColorBlendMode |
The CIColorBlendMode CoreImage filter |
| CIColorBurnBlendMode |
The CIColorBurnBlendMode CoreImage filter |
| CIColorClamp |
A filter that constrains the color values between the range specified. |
| CIColorControls |
The CIColorControls CoreImage filter |
| CIColorCrossPolynomial |
A filter that modifies the source pixels by applying a set of polynomial cross-products. |
| CIColorCube |
The CIColorCube CoreImage filter |
| CIColorCubeProtocol_Extensions |
Extension methods to the ICIColorCubeProtocol interface to support all the methods from the CIColorCube protocol. |
| CIColorCubesMixedWithMask | |
| CIColorCubesMixedWithMaskProtocol_Extensions |
Extension methods to the ICIColorCubesMixedWithMaskProtocol interface to support all the methods from the CIColorCubesMixedWithMask protocol. |
| CIColorCubeWithColorSpace |
A filter that modifies the source pixels using a 3D color-table and then maps the result to a color space. |
| CIColorCubeWithColorSpaceProtocol_Extensions |
Extension methods to the ICIColorCubeWithColorSpaceProtocol interface to support all the methods from the CIColorCubeWithColorSpace protocol. |
| CIColorCurves | |
| CIColorDodgeBlendMode |
The CIColorDodgeBlendMode CoreImage filter |
| CIColorInvert |
The CIColorInvert CoreImage filter |
| CIColorKernel |
Kernel for a GPU process that only operates on color data. |
| CIColorMap |
Changes colors based on an input gradient image's mapping. |
| CIColorMatrix |
The CIColorMatrix CoreImage filter. |
| CIColorMonochrome |
The CIColorMonochrome CoreImage filter |
| CIColorPolynomial |
A filter that modifies the source pixels by applying a set of cubic polynomials. |
| CIColorPosterize |
Reduces the number of levels for each color component. |
| CIColorThreshold | |
| CIColorThresholdOtsu | |
| CIColumnAverage |
Returns a 1-pixel high image with the same width as the input image. Every pixel is the average color of the corresponding column in the input image. |
| CIComicEffect |
Produces an image with outlined edges and a color halftone effect. |
| CICompositingFilter |
An abstract CIFilter that composites two images. |
| CIConstantColorGenerator |
Generates a solid color. |
| CIContext |
Orchestrates the rendering of a CIFilter pipeline. |
| CIContext_CIDepthBlurEffect | |
| CIContext_CIRenderDestination | |
| CIContext_ImageRepresentation |
Extension methods for CIContext that can generate common image formats. |
| CIContextOptions |
Use to configure the CIContext rendering pipeline. |
| CIConvolution3X3 |
A filter that performs a custom 3x3 matrix convolution. |
| CIConvolution5X5 |
A filter that performs a custom 5x5 matrix convolution. |
| CIConvolution7X7 |
A filter that performs a custom 7x7 matrix convolution. |
| CIConvolution9Horizontal |
A filter that performs a horizontal convolution of 9 elements. |
| CIConvolution9Vertical |
A filter that performs a vertical convolution of 9 elements. |
| CIConvolutionCore |
An abstract class that is the base for convolution filters. |
| CIConvolutionRGB3X3 | |
| CIConvolutionRGB5X5 | |
| CIConvolutionRGB7X7 | |
| CIConvolutionRGB9Horizontal | |
| CIConvolutionRGB9Vertical | |
| CICopyMachineTransition |
A CITransitionFilter that mimics the effect of a photocopier. |
| CICoreMLModelFilter | |
| CICrop |
The CICrop CoreImage filter |
| CICrystallize |
Creates irregular blocks of average color from the source image. |
| CIDarkenBlendMode |
The CIDarkenBlendMode CoreImage filter |
| CIDataMatrixCodeDescriptor |
A CIBarcodeDescriptor for the Data Matrix barcode scheme. |
| CIDepthBlurEffect | |
| CIDepthDisparityConverter | |
| CIDepthOfField |
Simulates a blurred depth of field and applies a saturation effect to the 'in-focus' region. |
| CIDepthToDisparity | |
| CIDetector |
Image analysis class for face detection. |
| CIDetectorOptions |
Options for use with face detection. Used with CreateFaceDetector(CIContext, Nullable<FaceDetectorAccuracy>, Nullable<Single>, Nullable<Boolean>). |
| CIDifferenceBlendMode |
The CIDifferenceBlendMode CoreImage filter |
| CIDiscBlur |
Applies a blur created with a disc-shaped convolution kernel. |
| CIDisintegrateWithMaskTransition |
A CITransitionFilter that uses a mask to define the transition. |
| CIDisparityToDepth | |
| CIDisplacementDistortion |
Textures the input image by the grayscale value of the corresponding pixels in the displacement image. |
| CIDissolveTransition |
A CITransitionFilter that performs a cross-dissolve. |
| CIDistanceGradientFromRedMask | |
| CIDistortionFilter |
An abstract CIFilter for distortions. |
| CIDither | |
| CIDivideBlendMode |
A CIBlendFilter that divides the color values of its InputImage and BackgroundImage. |
| CIDocumentEnhancer | |
| CIDotScreen |
A CIScreenFilter that screens with a halftone dot pattern. |
| CIDroste |
Creates a series of increasingly smaller boxes repeating a portion of the image. |
| CIDynamicRangeOptionExtensions |
Extension methods for the CIDynamicRangeOption enumeration. |
| CIEdgePreserveUpsampleFilter | |
| CIEdges |
Creates a colorized edge-detection effect. |
| CIEdgeWork |
Creates a black and white woodblock effect. |
| CIEightfoldReflectedTile |
A CITileFilter that applies 8-way reflected symmetry. |
| CIExclusionBlendMode |
The CIExclusionBlendMode CoreImage filter |
| CIExposureAdjust |
The CIExposureAdjust CoreImage filter |
| CIFaceBalance |
The CIFaceBalance CoreImage filter |
| CIFaceFeature |
Locations of the eyes and mouths in a detected face. In video sequences, attempts to maintain a consistent TrackingId. |
| CIFalseColor |
The CIFalseColor CoreImage filter |
| CIFeature |
An area of an image in which a CIDetector has detected a match. |
| CIFilter |
CoreImage image filter. |
| CIFilterApply | |
| CIFilterAttributes |
Constants used for CIFilter's attributes |
| CIFilterCategory |
Constants used for CIFilter filtering facilities to find filters by category. |
| CIFilterGenerator | |
| CIFilterInputKey |
Keys that can be used to configure the CIFilter input values. |
| CIFilterOutputKey |
Keys that can be used to get output results out of a CIFilter. |
| CIFilterShape |
Masks filter operations to areas composed of the intersections, unions, and affine transformations of rectangles and other similarly constructed filter shapes. |
| CIFlashTransition |
A CITransitionFilter that presents a starburst-like flash. |
| CIFormatExtensions |
Extension methods for the CIFormat enumeration. |
| CIFourfoldReflectedTile |
A CITileFilter that applies 4-way reflected symmetry. |
| CIFourfoldRotatedTile |
A CITileFilter that rotates the source image in 90-degree increments. |
| CIFourfoldTranslatedTile |
A CITileFilter that applies four translations to the source image. |
| CIGaborGradients | |
| CIGammaAdjust |
The CIGammaAdjust CoreImage filter |
| CIGaussianBlur |
Applies a Gaussian blur. |
| CIGaussianGradient |
Generates a gradient that fades via a 2D Gaussian distribution |
| CIGlassDistortion |
Distorts the input image so that it appears viewed through glass blocks whose geometry corresponds to the Texture image. |
| CIGlassLozenge |
Creates an effect as if a lozenge-shaped lens were placed on the input image. |
| CIGlideReflectedTile |
A CITileFilter that translates and smears the source image. |
| CIGloom |
A CIFilter that dulls the highlights of the source image. |
| CIGuidedFilter | |
| CIHardLightBlendMode |
The CIHardLightBlendMode CoreImage filter |
| CIHatchedScreen |
A CIScreenFilter that filters via a hatched halftone pattern. |
| CIHeightFieldFromMask |
Creates a continuous height field from a grayscale mask. Use with CIShadedMaterial to create realistic dropshadows. |
| CIHexagonalPixellate |
Pixellates the image with hexagonals based on the average color of pixels within the hexagon. |
| CIHighlightShadowAdjust |
The CIHighlightShadowAdjust CoreImage filter |
| CIHistogramDisplayFilter |
Renders a one-dimensional InputImage histogram as a typical two-dimensional histogram. |
| CIHoleDistortion |
A CIDistortionFilter that distorts pixels around a circular area. |
| CIHueAdjust |
The CIHueAdjust CoreImage filter |
| CIHueBlendMode |
The CIHueBlendMode CoreImage filter |
| CIHueSaturationValueGradient |
Creates a gradient specified using HSV. |
| CIImage |
Represents a set of instructions to create an image for use by CoreImage. |
| CIImageAccumulator |
A feedback image processor. |
| CIImageGenerator |
A CIFilter that generates images. |
| CIImageInitializationOptions |
Options that can be used when initializing a new CIImage. |
| CIImageInitializationOptionsWithMetadata |
A type of CIImageInitializationOptions that has additional metadata properties. |
| CIImageProcessorInput_Extensions |
Extension methods to the ICIImageProcessorInput interface to support all the methods from the CIImageProcessorInput protocol. |
| CIImageProcessorKernel |
Base class for image-processing classes whose processing can be inserted into the CoreImage processing pipeline. |
| CIImageProcessorOutput_Extensions |
Extension methods to the ICIImageProcessorOutput interface to support all the methods from the CIImageProcessorOutput protocol. |
| CIImageProvider_Extensions |
Extension methods to the ICIImageProvider interface to support all the methods from the CIImageProvider protocol. |
| CIImageProviderOptions |
Options used in various calls to CIImage involving ICIImageProvider objects. |
| CIImageRepresentationOptions | |
| CIKaleidoscope |
Produces a kaleidoscopic, 12-way-symmetrical, image. |
| CIKernel |
A kernel for filters that use custom GPU steps. |
| CIKeystoneCorrection | |
| CIKeystoneCorrectionCombined | |
| CIKeystoneCorrectionHorizontal | |
| CIKeystoneCorrectionVertical | |
| CIKMeans | |
| CILabDeltaE | |
| CILanczosScaleTransform |
A scaling transform that uses Lanczos resampling. |
| CILenticularHaloGenerator |
Creates an artificial lens-flare. |
| CILightenBlendMode |
The CILightenBlendMode CoreImage filter |
| CILightTunnel |
A CIFilter that creates a spiraling effect. |
| CILinearBlur | |
| CILinearBurnBlendMode |
Darkens the image based on the colors of the background image. |
| CILinearDodgeBlendMode |
Darkens the image based on the colors of the background image. |
| CILinearGradient |
A gradient that fades one color linearly into another. |
| CILinearLightBlendMode | |
| CILinearToSRGBToneCurve |
A filter that maps color intensity from a linear gamma curve to the sRGB color space. |
| CILineOverlay |
Produces a black-and-white sketch-like image via edge detection. |
| CILineScreen |
A CIScreenFilter that simulates a halftone made of lines. |
| CILuminosityBlendMode |
The CILuminosityBlendMode CoreImage filter |
| CIMaskedVariableBlur |
A CIFilter that blurs based on a black-and-white mask. |
| CIMaskToAlpha |
A CIFilter that converts a grayscale image to an alpha mask. |
| CIMaximumComponent |
A CIFilter that creates a grayscale image from the maximum value of the RGB color values. |
| CIMaximumCompositing |
The CIMaximumCompositing CoreImage filter |
| CIMaximumScaleTransform | |
| CIMedianFilter |
Replaces pixel values with the median of neighboring pixel values, thus reducing noise in the input image. |
| CIMeshGenerator | |
| CIMinimumComponent |
A CIFilter that creates a grayscale image from the minimum component of the RGB values. |
| CIMinimumCompositing |
The CIMinimumCompositing CoreImage filter |
| CIMix | |
| CIModTransition |
A CITransitionFilter that reveals the background image via a series of irregularly shaped holes. |
| CIMorphology | |
| CIMorphologyGradient | |
| CIMorphologyMaximum | |
| CIMorphologyMinimum | |
| CIMorphologyRectangle | |
| CIMorphologyRectangleMaximum | |
| CIMorphologyRectangleMinimum | |
| CIMotionBlur |
Applies a blur that simulates the motion of a camera during capture. |
| CIMultiplyBlendMode |
The CIMultiplyBlendMode CoreImage filter |
| CIMultiplyCompositing |
The CIMultiplyCompositing CoreImage filter |
| CINinePartStretched | |
| CINinePartTiled | |
| CINoiseReduction |
Reduces noise by detecting luminance variations. Small luminance variations are locally blurred, large variations are locally sharpened. |
| CIOpTile |
Creates an 'op art' effect by tiling, scaling, and rotating regions of the image. |
| CIOverlayBlendMode |
The CIOverlayBlendMode CoreImage filter |
| CIPageCurlTransition |
Animates a page curl transition between images. |
| CIPageCurlWithShadowTransition |
Animates a page curl transition, with a shadow, between images. |
| CIPaletteCentroid | |
| CIPalettize | |
| CIParallelogramTile |
Warps an image into a parallelogram and then tiles the result. |
| CIPdf417BarcodeGenerator |
Generator for 2-dimensional PDF417 bar codes. |
| CIPdf417CodeDescriptor |
A CIBarcodeDescriptor for the CIPDF417 barcode scheme. |
| CIPersonSegmentation | |
| CIPerspectiveCorrection |
A CIPerspectiveTransform that is cropped according to the perspective control points, but whose pixels are not transformed. |
| CIPerspectiveRotate | |
| CIPerspectiveTile |
A CIFilter that applies a perspective transform and then tiles the result. |
| CIPerspectiveTransform |
A CIFilter that applies a transform the simulates perspective. |
| CIPerspectiveTransformWithExtent |
A filter that alters a portion of the total image based on a perspective transform. |
| CIPhotoEffect |
The base class for photo effect filters. |
| CIPhotoEffectChrome |
A filter that exaggerates color of the image producing a vintage look. |
| CIPhotoEffectFade |
A filter that reduces color of the image producing a vintage look. |
| CIPhotoEffectInstant |
A filter that that distorts colors in a style reminiscent of instant film. |
| CIPhotoEffectMono |
A filter that produces a low-contrast black-and-white image. |
| CIPhotoEffectNoir |
A filter that produces a high-contrast black-and-white image. |
| CIPhotoEffectProcess |
A filter that produces a vintage look with exagerrated cool colors. |
| CIPhotoEffectProtocol_Extensions |
Extension methods to the ICIPhotoEffectProtocol interface to support all the methods from the CIPhotoEffect protocol. |
| CIPhotoEffectTonal |
A filter that produces a black-and-white image with minimal contrast changes. |
| CIPhotoEffectTransfer |
A filter that produces a vintage look with exagerrated warm colors. |
| CIPinchDistortion |
A CIDistortionFilter that pinches pixels towards a rectangular area. |
| CIPinLightBlendMode |
Replaces image colors with the bright colors from the background image. |
| CIPixellate |
A CIFilter that pixelates the original image. |
| CIPlugIn | |
| CIPointillize |
Creates an effect mimicking artistic pointillization. |
| CIQRCodeDescriptor |
A CIBarcodeDescriptor for QR codes. |
| CIQRCodeFeature |
A detected QR code. |
| CIQRCodeGenerator |
Generates a QR code. |
| CIRadialGradient |
Generates a gradient between two colors as if reflected on a sphere. |
| CIRandomGenerator |
A CIFilter whose pixels are randomly colored. |
| CIRawDecoderVersionExtensions |
Extension methods for the CIRawDecoderVersion enumeration. |
| CIRawFilter | |
| CIRawFilterOptions |
Settings for use with CreateRawFilter(CVPixelBuffer, NSDictionary, NSDictionary). |
| CIRectangleFeature |
A CIFeature an image space rectange that contains a detected physical rectangle. |
| CIReductionFilter | |
| CIRenderDestination | |
| CIRenderInfo |
Holds information about a render pass, including timing information and number of pixels processed. |
| CIRenderTask | |
| CIRippleTransition |
Animates a ripple transition between images. |
| CIRoundedQRCodeGenerator | |
| CIRoundedRectangleGenerator | |
| CIRoundedRectangleStrokeGenerator | |
| CIRowAverage |
Returns a 1-pixel-high image, the pixels of which are the average color for the corresponding row in the input image. |
| CISaliencyMapFilter | |
| CISampleNearest | |
| CISampler |
Samples images for processing by a CISampler. |
| CISamplerOptions |
Options to conrol sampler operations for CISampler objects. |
| CISaturationBlendMode |
The CISaturationBlendMode CoreImage filter |
| CIScreenBlendMode |
The CIScreenBlendMode CoreImage filter |
| CIScreenFilter |
A CIFilter that mimics halftone screens. |
| CISepiaTone |
The CISepiaTone CoreImage filter |
| CIShadedMaterial |
Produces a shaded image from a height field, such as that produced by CIHeightFieldFromMask. |
| CISharpenLuminance |
A CIFilter that sharpens the image. |
| CISignedDistanceGradientFromRedMask | |
| CISixfoldReflectedTile |
A CITileFilter that applies 6-way reflected symmetry. |
| CISixfoldRotatedTile |
A CITileFilter that rotates the image in 60-degree increments. |
| CISmoothLinearGradient |
A filter that produces a gradient along a linear axis between two endpoints. |
| CISobelGradients | |
| CISoftLightBlendMode |
The CISoftLightBlendMode CoreImage filter |
| CISourceAtopCompositing |
The CISourceAtopCompositing CoreImage filter |
| CISourceInCompositing |
The CISourceInCompositing CoreImage filter |
| CISourceOutCompositing |
The CISourceOutCompositing CoreImage filter |
| CISourceOverCompositing |
The CISourceOverCompositing CoreImage filter |
| CISpotColor |
Replaces color ranges with specified replacement colors. |
| CISpotLight |
Produces an effect mimicking that of a directional spotlight. |
| CISRGBToneCurveToLinear |
A filter that adjusts tone response in sRGB color space and then maps it to a linear gamma curve. |
| CIStarShineGenerator |
A CIFilter that simulates lens flare. |
| CIStraightenFilter |
The CIStraightenFilter CoreImage filter |
| CIStretchCrop |
Stretches and crops an image. |
| CIStripesGenerator |
Generates hard-edged strips of alternating colors. |
| CISubtractBlendMode |
Subtracts the background image pixels from those in the InputImage. |
| CISunbeamsGenerator |
Creates an artificial sun and light-ray effect. |
| CISwipeTransition |
A CITransitionFilter that swipes from one image to the other. |
| CISystemToneMap | |
| CITemperatureAndTint |
The CITemperatureAndTint CoreImage filter |
| CITextFeature |
A detected text feature. |
| CITextImageGenerator |
A CIImageGenerator that generates an image from text. |
| CITextImageGeneratorProtocol_Extensions |
Extension methods to the ICITextImageGeneratorProtocol interface to support all the methods from the CITextImageGenerator protocol. |
| CIThermal | |
| CITileFilter |
A CIFilter that applies a filter and then tiles the results. |
| CIToneCurve |
The CIToneCurve CoreImage filter |
| CIToneMapHeadroom | |
| CITorusLensDistortion |
Produces an effect as if a toroidal lens were placed on the input image. |
| CITransitionFilter |
A CITransitionFilter that animates a transition between two images. |
| CITriangleKaleidoscope |
A CIFilter that creates a kaleidoscopic effect. |
| CITriangleTile |
Tiles the image with a triangular region of the input image. |
| CITwelvefoldReflectedTile |
A CITileFilter that applies 12-way reflected symmetry. |
| CITwirlDistortion |
A CIDistortionFilter that rotates pixels around a point. |
| CIUIParameterSet |
Contains options for core image filter user interfaces. |
| CIUnsharpMask |
A CIFilter that increases the contrast of edges in the image. |
| CIVector |
A vector for use with Core Image objects such as CIFilter. |
| CIVibrance |
The CIVibrance CoreImage filter |
| CIVignette |
The CIVignette CoreImage filter |
| CIVignetteEffect |
A filter that modifies the brightness of the outside of an image. |
| CIVividLightBlendMode | |
| CIVortexDistortion |
A CIDistortionFilter that creates a tight spiraling distortion suggestive of a vortex. |
| CIWarpKernel |
A kernel for GPU transforms that operate only on geometry. |
| CIWhitePointAdjust |
The CIWhitePointAdjust CoreImage filter |
| CIXRay | |
| CIZoomBlur |
Applies a blur that simulates a camera zoom during capture. |
| NSObject_CIImageProvider |
Interface defining an image provider. |
Interfaces
| Name | Description |
|---|---|
| ICIAccordionFoldTransitionProtocol |
This interface represents the Objective-C protocol |
| ICIAffineClampProtocol |
This interface represents the Objective-C protocol |
| ICIAffineTileProtocol |
This interface represents the Objective-C protocol |
| ICIAreaAverageMaximumRedProtocol |
This interface represents the Objective-C protocol |
| ICIAreaAverageProtocol |
This interface represents the Objective-C protocol |
| ICIAreaBoundsRedProtocol |
This interface represents the Objective-C protocol |
| ICIAreaHistogramProtocol |
This interface represents the Objective-C protocol |
| ICIAreaLogarithmicHistogramProtocol |
This interface represents the Objective-C protocol |
| ICIAreaMaximumAlphaProtocol |
This interface represents the Objective-C protocol |
| ICIAreaMaximumProtocol |
This interface represents the Objective-C protocol |
| ICIAreaMinimumAlphaProtocol |
This interface represents the Objective-C protocol |
| ICIAreaMinimumProtocol |
This interface represents the Objective-C protocol |
| ICIAreaMinMaxProtocol |
This interface represents the Objective-C protocol |
| ICIAreaMinMaxRedProtocol |
This interface represents the Objective-C protocol |
| ICIAreaReductionFilterProtocol |
This interface represents the Objective-C protocol |
| ICIAttributedTextImageGeneratorProtocol |
This interface represents the Objective-C protocol |
| ICIAztecCodeGeneratorProtocol |
This interface represents the Objective-C protocol |
| ICIBarcodeGeneratorProtocol |
This interface represents the Objective-C protocol |
| ICIBarsSwipeTransitionProtocol |
This interface represents the Objective-C protocol |
| ICIBicubicScaleTransformProtocol |
This interface represents the Objective-C protocol |
| ICIBlendWithMaskProtocol |
This interface represents the Objective-C protocol |
| ICIBloomProtocol |
This interface represents the Objective-C protocol |
| ICIBlurredRectangleGeneratorProtocol |
This interface represents the Objective-C protocol |
| ICIBlurredRoundedRectangleGeneratorProtocol |
This interface represents the Objective-C protocol |
| ICIBokehBlurProtocol |
This interface represents the Objective-C protocol |
| ICIBoxBlurProtocol |
This interface represents the Objective-C protocol |
| ICIBumpDistortionLinearProtocol |
This interface represents the Objective-C protocol |
| ICIBumpDistortionProtocol |
This interface represents the Objective-C protocol |
| ICICannyEdgeDetectorProtocol |
This interface represents the Objective-C protocol |
| ICICheckerboardGeneratorProtocol |
This interface represents the Objective-C protocol |
| ICICircleSplashDistortionProtocol |
This interface represents the Objective-C protocol |
| ICICircularScreenProtocol |
This interface represents the Objective-C protocol |
| ICICircularWrapProtocol |
This interface represents the Objective-C protocol |
| ICICmykHalftoneProtocol |
This interface represents the Objective-C protocol |
| ICICode128BarcodeGeneratorProtocol |
This interface represents the Objective-C protocol |
| ICIColorAbsoluteDifferenceProtocol |
This interface represents the Objective-C protocol |
| ICIColorClampProtocol |
This interface represents the Objective-C protocol |
| ICIColorControlsProtocol |
This interface represents the Objective-C protocol |
| ICIColorCrossPolynomialProtocol |
This interface represents the Objective-C protocol |
| ICIColorCubeProtocol |
This interface represents the Objective-C protocol |
| ICIColorCubesMixedWithMaskProtocol |
This interface represents the Objective-C protocol |
| ICIColorCubeWithColorSpaceProtocol |
This interface represents the Objective-C protocol |
| ICIColorCurvesProtocol |
This interface represents the Objective-C protocol |
| ICIColorInvertProtocol |
This interface represents the Objective-C protocol |
| ICIColorMapProtocol |
This interface represents the Objective-C protocol |
| ICIColorMatrixProtocol |
This interface represents the Objective-C protocol |
| ICIColorMonochromeProtocol |
This interface represents the Objective-C protocol |
| ICIColorPolynomialProtocol |
This interface represents the Objective-C protocol |
| ICIColorPosterizeProtocol |
This interface represents the Objective-C protocol |
| ICIColorThresholdOtsuProtocol |
This interface represents the Objective-C protocol |
| ICIColorThresholdProtocol |
This interface represents the Objective-C protocol |
| ICIColumnAverageProtocol |
This interface represents the Objective-C protocol |
| ICIComicEffectProtocol |
This interface represents the Objective-C protocol |
| ICICompositeOperationProtocol |
This interface represents the Objective-C protocol |
| ICIConvertLabProtocol |
This interface represents the Objective-C protocol |
| ICIConvolutionProtocol |
This interface represents the Objective-C protocol |
| ICICopyMachineTransitionProtocol |
This interface represents the Objective-C protocol |
| ICICoreMLModelProtocol |
This interface represents the Objective-C protocol |
| ICICrystallizeProtocol |
This interface represents the Objective-C protocol |
| ICIDepthOfFieldProtocol |
This interface represents the Objective-C protocol |
| ICIDepthToDisparityProtocol |
This interface represents the Objective-C protocol |
| ICIDiscBlurProtocol |
This interface represents the Objective-C protocol |
| ICIDisintegrateWithMaskTransitionProtocol |
This interface represents the Objective-C protocol |
| ICIDisparityToDepthProtocol |
This interface represents the Objective-C protocol |
| ICIDisplacementDistortionProtocol |
This interface represents the Objective-C protocol |
| ICIDissolveTransitionProtocol |
This interface represents the Objective-C protocol |
| ICIDistanceGradientFromRedMaskProtocol |
This interface represents the Objective-C protocol |
| ICIDitherProtocol |
This interface represents the Objective-C protocol |
| ICIDocumentEnhancerProtocol |
This interface represents the Objective-C protocol |
| ICIDotScreenProtocol |
This interface represents the Objective-C protocol |
| ICIDrosteProtocol |
This interface represents the Objective-C protocol |
| ICIEdgePreserveUpsampleProtocol |
This interface represents the Objective-C protocol |
| ICIEdgesProtocol |
This interface represents the Objective-C protocol |
| ICIEdgeWorkProtocol |
This interface represents the Objective-C protocol |
| ICIEightfoldReflectedTileProtocol |
This interface represents the Objective-C protocol |
| ICIExposureAdjustProtocol |
This interface represents the Objective-C protocol |
| ICIFalseColorProtocol |
This interface represents the Objective-C protocol |
| ICIFilterConstructor |
Interface for classes that create named filters. |
| ICIFilterProtocol |
This interface represents the Objective-C protocol |
| ICIFlashTransitionProtocol |
This interface represents the Objective-C protocol |
| ICIFourCoordinateGeometryFilterProtocol |
This interface represents the Objective-C protocol |
| ICIFourfoldReflectedTileProtocol |
This interface represents the Objective-C protocol |
| ICIFourfoldRotatedTileProtocol |
This interface represents the Objective-C protocol |
| ICIFourfoldTranslatedTileProtocol |
This interface represents the Objective-C protocol |
| ICIGaborGradientsProtocol |
This interface represents the Objective-C protocol |
| ICIGammaAdjustProtocol |
This interface represents the Objective-C protocol |
| ICIGaussianBlurProtocol |
This interface represents the Objective-C protocol |
| ICIGaussianGradientProtocol |
This interface represents the Objective-C protocol |
| ICIGlassDistortionProtocol |
This interface represents the Objective-C protocol |
| ICIGlassLozengeProtocol |
This interface represents the Objective-C protocol |
| ICIGlideReflectedTileProtocol |
This interface represents the Objective-C protocol |
| ICIGloomProtocol |
This interface represents the Objective-C protocol |
| ICIHatchedScreenProtocol |
This interface represents the Objective-C protocol |
| ICIHeightFieldFromMaskProtocol |
This interface represents the Objective-C protocol |
| ICIHexagonalPixellateProtocol |
This interface represents the Objective-C protocol |
| ICIHighlightShadowAdjustProtocol |
This interface represents the Objective-C protocol |
| ICIHistogramDisplayProtocol |
This interface represents the Objective-C protocol |
| ICIHoleDistortionProtocol |
This interface represents the Objective-C protocol |
| ICIHueAdjustProtocol |
This interface represents the Objective-C protocol |
| ICIHueSaturationValueGradientProtocol |
This interface represents the Objective-C protocol |
| ICIImageProcessorInput |
The input to a CIImageProcessorKernel. |
| ICIImageProcessorOutput |
The output of a CIImageProcessorKernel. |
| ICIImageProvider |
Interface defining an image provider. |
| ICIKaleidoscopeProtocol |
This interface represents the Objective-C protocol |
| ICIKeystoneCorrectionCombinedProtocol |
This interface represents the Objective-C protocol |
| ICIKeystoneCorrectionHorizontalProtocol |
This interface represents the Objective-C protocol |
| ICIKeystoneCorrectionVerticalProtocol |
This interface represents the Objective-C protocol |
| ICIKMeansProtocol |
This interface represents the Objective-C protocol |
| ICILabDeltaEProtocol |
This interface represents the Objective-C protocol |
| ICILanczosScaleTransformProtocol |
This interface represents the Objective-C protocol |
| ICILenticularHaloGeneratorProtocol |
This interface represents the Objective-C protocol |
| ICILightTunnelProtocol |
This interface represents the Objective-C protocol |
| ICILinearGradientProtocol |
This interface represents the Objective-C protocol |
| ICILinearToSrgbToneCurveProtocol |
This interface represents the Objective-C protocol |
| ICILineOverlayProtocol |
This interface represents the Objective-C protocol |
| ICILineScreenProtocol |
This interface represents the Objective-C protocol |
| ICIMaskedVariableBlurProtocol |
This interface represents the Objective-C protocol |
| ICIMaskToAlphaProtocol |
This interface represents the Objective-C protocol |
| ICIMaximumComponentProtocol |
This interface represents the Objective-C protocol |
| ICIMaximumScaleTransformProtocol |
This interface represents the Objective-C protocol |
| ICIMedianProtocol |
This interface represents the Objective-C protocol |
| ICIMeshGeneratorProtocol |
This interface represents the Objective-C protocol |
| ICIMinimumComponentProtocol |
This interface represents the Objective-C protocol |
| ICIMixProtocol |
This interface represents the Objective-C protocol |
| ICIModTransitionProtocol |
This interface represents the Objective-C protocol |
| ICIMorphologyGradientProtocol |
This interface represents the Objective-C protocol |
| ICIMorphologyMaximumProtocol |
This interface represents the Objective-C protocol |
| ICIMorphologyMinimumProtocol |
This interface represents the Objective-C protocol |
| ICIMorphologyRectangleMaximumProtocol |
This interface represents the Objective-C protocol |
| ICIMorphologyRectangleMinimumProtocol |
This interface represents the Objective-C protocol |
| ICIMotionBlurProtocol |
This interface represents the Objective-C protocol |
| ICINinePartStretchedProtocol |
This interface represents the Objective-C protocol |
| ICINinePartTiledProtocol |
This interface represents the Objective-C protocol |
| ICINoiseReductionProtocol |
This interface represents the Objective-C protocol |
| ICIOpTileProtocol |
This interface represents the Objective-C protocol |
| ICIPageCurlTransitionProtocol |
This interface represents the Objective-C protocol |
| ICIPageCurlWithShadowTransitionProtocol |
This interface represents the Objective-C protocol |
| ICIPaletteCentroidProtocol |
This interface represents the Objective-C protocol |
| ICIPalettizeProtocol |
This interface represents the Objective-C protocol |
| ICIParallelogramTileProtocol |
This interface represents the Objective-C protocol |
| ICIPdf417BarcodeGeneratorProtocol |
This interface represents the Objective-C protocol |
| ICIPersonSegmentationProtocol |
This interface represents the Objective-C protocol |
| ICIPerspectiveCorrectionProtocol |
This interface represents the Objective-C protocol |
| ICIPerspectiveRotateProtocol |
This interface represents the Objective-C protocol |
| ICIPerspectiveTileProtocol |
This interface represents the Objective-C protocol |
| ICIPerspectiveTransformProtocol |
This interface represents the Objective-C protocol |
| ICIPerspectiveTransformWithExtentProtocol |
This interface represents the Objective-C protocol |
| ICIPhotoEffectProtocol |
This interface represents the Objective-C protocol |
| ICIPinchDistortionProtocol |
This interface represents the Objective-C protocol |
| ICIPixellateProtocol |
This interface represents the Objective-C protocol |
| ICIPointillizeProtocol |
This interface represents the Objective-C protocol |
| ICIQRCodeGeneratorProtocol |
This interface represents the Objective-C protocol |
| ICIRadialGradientProtocol |
This interface represents the Objective-C protocol |
| ICIRandomGeneratorProtocol |
This interface represents the Objective-C protocol |
| ICIRippleTransitionProtocol |
This interface represents the Objective-C protocol |
| ICIRoundedQRCodeGeneratorProtocol |
This interface represents the Objective-C protocol |
| ICIRoundedRectangleGeneratorProtocol |
This interface represents the Objective-C protocol |
| ICIRoundedRectangleStrokeGeneratorProtocol |
This interface represents the Objective-C protocol |
| ICIRowAverageProtocol |
This interface represents the Objective-C protocol |
| ICISaliencyMapProtocol |
This interface represents the Objective-C protocol |
| ICISepiaToneProtocol |
This interface represents the Objective-C protocol |
| ICIShadedMaterialProtocol |
This interface represents the Objective-C protocol |
| ICISharpenLuminanceProtocol |
This interface represents the Objective-C protocol |
| ICISignedDistanceGradientFromRedMaskProtocol |
This interface represents the Objective-C protocol |
| ICISixfoldReflectedTileProtocol |
This interface represents the Objective-C protocol |
| ICISixfoldRotatedTileProtocol |
This interface represents the Objective-C protocol |
| ICISmoothLinearGradientProtocol |
This interface represents the Objective-C protocol |
| ICISobelGradientsProtocol |
This interface represents the Objective-C protocol |
| ICISpotColorProtocol |
This interface represents the Objective-C protocol |
| ICISpotLightProtocol |
This interface represents the Objective-C protocol |
| ICISrgbToneCurveToLinearProtocol |
This interface represents the Objective-C protocol |
| ICIStarShineGeneratorProtocol |
This interface represents the Objective-C protocol |
| ICIStraightenProtocol |
This interface represents the Objective-C protocol |
| ICIStretchCropProtocol |
This interface represents the Objective-C protocol |
| ICIStripesGeneratorProtocol |
This interface represents the Objective-C protocol |
| ICISunbeamsGeneratorProtocol |
This interface represents the Objective-C protocol |
| ICISwipeTransitionProtocol |
This interface represents the Objective-C protocol |
| ICISystemToneMapProtocol |
This interface represents the Objective-C protocol |
| ICITemperatureAndTintProtocol |
This interface represents the Objective-C protocol |
| ICITextImageGeneratorProtocol |
This interface represents the Objective-C protocol |
| ICIThermalProtocol |
This interface represents the Objective-C protocol |
| ICIToneCurveProtocol |
This interface represents the Objective-C protocol |
| ICIToneMapHeadroomProtocol |
This interface represents the Objective-C protocol |
| ICITorusLensDistortionProtocol |
This interface represents the Objective-C protocol |
| ICITransitionFilterProtocol |
This interface represents the Objective-C protocol |
| ICITriangleKaleidoscopeProtocol |
This interface represents the Objective-C protocol |
| ICITriangleTileProtocol |
This interface represents the Objective-C protocol |
| ICITwelvefoldReflectedTileProtocol |
This interface represents the Objective-C protocol |
| ICITwirlDistortionProtocol |
This interface represents the Objective-C protocol |
| ICIUnsharpMaskProtocol |
This interface represents the Objective-C protocol |
| ICIVibranceProtocol |
This interface represents the Objective-C protocol |
| ICIVignetteEffectProtocol |
This interface represents the Objective-C protocol |
| ICIVignetteProtocol |
This interface represents the Objective-C protocol |
| ICIVortexDistortionProtocol |
This interface represents the Objective-C protocol |
| ICIWhitePointAdjustProtocol |
This interface represents the Objective-C protocol |
| ICIXRayProtocol |
This interface represents the Objective-C protocol |
| ICIZoomBlurProtocol |
This interface represents the Objective-C protocol |
Enums
| Name | Description |
|---|---|
| CIDataMatrixCodeEccVersion |
Enumerates the ECC versions for the Data Matrix barcode scheme. |
| CIDynamicRangeOption | |
| CIFilterMode |
Enumerates filter modes. |
| CIFormat |
An enumeration whose values specify pixel formats. |
| CIImageOrientation |
An enumeration whose values specify the origin of the CIImage. |
| CIQRCodeErrorCorrectionLevel |
Enumerates the error correction levels for QR codes. |
| CIRawDecoderVersion | |
| CIRenderDestinationAlphaMode | |
| CIWrapMode |
Enumerates values that control how samples from outside the source image are treated. |
| FaceDetectorAccuracy |
An enumeration whose values specify the accuracy of face detection. |
Delegates
| Name | Description |
|---|---|
| CIKernelRoiCallback |
Completion handler for deterimining a region of interest in the source image. |
Remarks
CoreImage provides a framework for processing still images and applying a set of operations on them to either produce new images or perform image analysis (like performing face detection and photography auto-enhance). The operations are hardware accelerated and provide better performance than most hand written implementations.
CoreImage can apply either one filter to an image or you can use the built-in chaining support to apply a series of filters at once to an image. For example, you could apply a Sepia Filter, followed by a Hue adjustment filter, followed by a contrast filter. The idea behind the chaining support is to avoid intermediate copies and intermediate buffers during image processing. Additionally, some of these filtering operations can be performed entirely on the GPU in a single pass, without having to copy data back and forth from the GPU to the main memory.
The CoreImage runtime sits below the CoreGraphics, CoreVideo and ImageIO stacks and provides services to all of them. Depending on the filter operations and the hardware platform, CoreImage will execute the filters in the CPU or the GPU.
To use CoreImage on iOS, you follow these steps:
- Create a CIImage object. You can create these from multiple sources: CoreGraphics images, bitmap data, images on disk or CoreVideo image buffers. CIImage objects are immutable and represent recipes, that is, they will be computed on demand.
:
- Create and configure a CIFilter object. This object combines image inputs or numeric input parameters to configure the effects of the filter. The configuration is done by setting various properties using the object indexer to any of the documented values. :
- Create a CIContext object to track the processing pipeline. This is the object through which CoreImage draws and it can be CPU or GPU bound.
:
- Render the filter output into a target image using one of the CIContext methods. :
// This sample turns the image into a sepia image
// Load the image using UIImage, it is convenient
var uiimage = UIImage.FromFile ("sample.jpg");
// Create the CIImage, using the UIImage's CGImage as a reference
var image = new CIImage (uiimage.CGImage);
// Create the filter
var sepia = new CISepiaTone () {
Image = image,
Intensity = .8f
};
// Generate the recipe. It is important to note that at this point
// the resulting CIImage merely contains the recipe on how to create
// the image, this is important, because you can use this result as
// the input to another filter to chain filters together and only
// at the last minute, when the CIContext rendering APIs are used,
// does the actual pipeline execute. This allows for a series of
// operations to all be performed in one step without intermediate
// buffer copies.
CIImage output = sepia.OutputImage;
// To render the results, we need to create a context, and then
// use one of the context rendering APIs, in this case, we render the
// result into a CoreGraphics image, which is merely a useful representation
//
var context = CIContext.FromOptions (null);
var cgimage = context.CreateCGImage (output, output.Extent);
// The above cgimage can be added to a screen view, for example, this
// would add it to a UIImageView on the screen:
myImageView.Image = UIImage.FromImage (cgimage);
Face detection is done with the CIDetector class by calling the CreateFaceDetector method which returns an array of CIFeature objects with any detected face features found.
Auto-adjustments are implemented by calling the GetAutoAdjustmentFilters() method. This method returns a list of suggested CIFilter which you in turn would apply to your image and render to a context.
To chain filters, all you have to do is connect the OutputImage property from a filter to the Image property of another filter. This is a modified version of the previous example showing how to chain two filters together:
var uiimage = UIImage.FromFile ("sample.jpg");
var image = new CIImage (uiimage.CGImage);
var sepia = new CISepiaTone () {
Image = image,
Intensity = .8f
};
// Chain the Sepia filter to a Color inversion filter, this is done
// by assigning the CIColorInvert.Input to the sepia.OutputImage
var invert = new CIColorInvert () {
Image = sepia.OutputImage
};
CIImage output = invert.OutputImage;
var context = CIContext.FromOptions (null);
var cgimage = context.CreateCGImage (output, output.Extent);
myImageView.Image = UIImage.FromImage (cgimage);