Live Photo Editing And RAW Processing With Core Image
Media#WWDC16Live Photo Editing and RAW Processingwith Core ImageSession 505David Hayward Pixel Perfectionist 2016 Apple Inc. All rights reserved. Redistribution or public display not permitted without written permission from Apple.
What You Will Learn TodayA very brief introduction to Core ImageAdjusting RAW images on iOSEditing Live PhotosExtending Core Image using CIImageProcessor
A Very Brief Introduction to Core Image
A Very Brief Introduction to Core ImageA simple, high-performance API to apply filters to imagesInput toWorking SpaceOriginal CIImageSepiaFilterHueFilterOutput CIImage
A Very Brief Introduction to Core ImageA simple, high-performance API to apply filters to imagesimage image.applyingFilter(Input toWorking rameters:["inputIntensity" : 1.0])Original CIImageOutput CIImage
A Very Brief Introduction to Core ImageA simple, high-performance API to apply filters to imagesInput toWorking SpaceOriginal CIImageSepiaFilterHueFilterOutput CIImage
A Very Brief Introduction to Core ImageA simple, high-performance API to apply filters to imagesInput toIWorking SpaceOriginal CIImageSepiaFilterHueFilterContrastFilterOWorking Spaceto OutputOutput CIImage
A Very Brief Introduction to Core ImageAutomatic color managementInput toWorking SpaceOriginal CIImageSepiaFilterHueFilterContrastFilterWorking Spaceto OutputOOutput CIImage
A Very Brief Introduction to Core ImageAutomatic color management Input toSepiaHueContrast Working SpaceWideimages andare common.WorkingSpacecolor FilterFilterdisplaysFilterto OutputOMost open-source image processing librariesdo not support color management.Original CIImageOutput CIImage
A Very Brief Introduction to Core ImageAutomatic color managementInput toWorking SpaceOriginal CIImageSepiaFilterHueFilterContrastFilterWorking Spaceto OutputOOutput CIImage
A Very Brief Introduction to Core ImageEach CIFilter has one or more CIKernel functionsInput toWorking SpaceSepiaFilterHueFilterContrastFilterOriginal CIImageWorking SpaceOto OutputOutput CIImagekernel vec4 sepia ()kernel vec4 hue ()kernel vec4 contrast ()
A Very Brief Introduction to Core ImageEach CIFilter has one or more CIKernel functionsInput toWorking erFilterOriginal CIImageOWorking Spaceto OutputOutput CIImagekernel vec4 sepia ()kernel vec4 hue ()kernel vec4 contrast ()
180 Built-In itePointAdjustXRayZoomBlur
New Built-In CIFiltersCIHueSaturationValueGradientNEW
New Built-In CIFiltersCIHueSaturationValueGradientNEW
New Built-In CIFiltersCINinePartStretched and CINinePartTiledNEW
New Built-In CIFiltersCINinePartStretched and CINinePartTiledNEW
New Built-In CIFiltersCINinePartStretched and CINinePartTiledNEW
New Built-In CIFiltersCIEdgePreserveUpsampleFilter6x7 Pixel InputNEW
New Built-In CIFiltersCIEdgePreserveUpsampleFilter 6x7 Pixel Input1024x768 Pixel GuideNEW
New Built-In CIFiltersNEWCIEdgePreserveUpsampleFilter 6x7 Pixel Input 1024x768 Pixel Guide1024x768 Pixel Result
New Built-In CIFiltersNEWCIEdgePreserveUpsampleFilter 6x7 Pixel Input 1024x768 Pixel Guide1024x768 Pixel Result
New Performance ControlsMetal on by defaultNEW
New Performance ControlsMetal on by defaultNow UIImage(ciImage:) is much fasterNEW
New Performance ControlsMetal on by defaultNow UIImage(ciImage:) is much fasterCore Image supports input and output of half-float CGImageRefsNEW
New Performance ControlsNEWMetal on by defaultNow UIImage(ciImage:) is much fasterCore Image supports input and output of half-float CGImageRefsPixel FormatBytes Per PixelBit DepthRangeQuantizationRGBA8480 1linear
New Performance ControlsNEWMetal on by defaultNow UIImage(ciImage:) is much fasterCore Image supports input and output of half-float CGImageRefsPixel FormatBytes Per PixelBit DepthRangeQuantizationRGBA8480 1linearRGBAf1624–1038 1038logarithmic
New Performance ControlsNEWMetal on by defaultNow UIImage(ciImage:) is much fasterCore Image supports input and output of half-float CGImageRefsPixel FormatBytes Per PixelBit DepthRangeQuantizationRGBA8480 1linearRGBAf1624–1038 1038logarithmicRGBAh810–65519 65519logarithmic
New Performance ControlsNEWMetal on by defaultNow UIImage(ciImage:) is much fasterCore Image supports input and output of half-float CGImageRefsPixel FormatBytes Per PixelBit DepthRangeQuantizationRGBA8480 1linearRGBAf1624–1038 1038logarithmicRGBAh810–65519 t410–0.37 1.62gamma’d
Adjusting RAW Images with Core Image
Adjusting RAW Images with Core ImageWhat is a RAW fileUsing the CIRAWFilter APISupporting wide-gamut outputManaging memory
Adjusting RAW ImagesWhat is a RAW file
Adjusting RAW ImagesWhat is a RAW fileMost cameras use a color filter arrayand a sensor arrayColor Filter ArraySensor Array
Adjusting RAW ImagesWhat is a RAW fileLight from SceneMost cameras use a color filter arrayand a sensor arrayPhotons from the scene pass through thefilter and are counted by the sensorColor Filter ArraySensor Array
Adjusting RAW ImagesWhat is a RAW fileMost cameras use a color filter arrayand a sensor arrayPhotons from the scene pass through thefilter and are counted by the sensor
Adjusting RAW ImagesWhat is a RAW fileMost cameras use a color filter arrayand a sensor arrayPhotons from the scene pass through thefilter and are counted by the sensor
Adjusting RAW ImagesWhat is a RAW fileMost cameras use a color filter arrayand a sensor arrayPhotons from the scene pass through thefilter and are counted by the sensorAdvanced image processing is required todevelop the RAW sensor data into an imagesuitable for output
Adjusting RAW ImagesWhat is a RAW fileMost cameras use a color filter arrayand a sensor arrayPhotons from the scene pass through thefilter and are counted by the sensorAdvanced image processing is required todevelop the RAW sensor data into an imagesuitable for output
Adjusting RAW ImagesWhat is a RAW file
Adjusting RAW ImagesWhat is a RAW fileRAW files store unprocessed scene data
Adjusting RAW ImagesWhat is a RAW fileRAW files store unprocessed scene dataJPG files store processed output images
Adjusting RAW ImagesWhat is a RAW fileJPG files store processed output images
Adjusting RAW ImagesWhat is a RAW file
Adjusting RAW ImagesStages of RAW image processing
Adjusting RAW ImagesStages of RAW image processingExtract critical metadata
Adjusting RAW ImagesStages of RAW image processingExtract critical metadataDecode RAW sensor image
Adjusting RAW ImagesStages of RAW image processingExtract critical metadataDecode RAW sensor imageDe-mosaic reconstruction
Adjusting RAW ImagesStages of RAW image processingExtract critical metadataDecode RAW sensor imageDe-mosaic reconstructionApply lens correction
Adjusting RAW ImagesStages of RAW image processingExtract critical metadataDecode RAW sensor imageDe-mosaic reconstructionApply lens correctionReduce noise
Adjusting RAW ImagesStages of RAW image processingExtract critical metadataDecode RAW sensor imageDe-mosaic reconstructionApply lens correctionReduce noiseColor-match scene-referred sensor valuesto output-referred color space
Adjusting RAW ImagesStages of RAW image processingExtract critical metadataDecode RAW sensor imageDe-mosaic reconstructionApply lens correctionReduce noiseColor-match scene-referred sensor valuesto output-referred color spaceAdjust exposure and temperature/tint
Adjusting RAW ImagesStages of RAW image processingExtract critical metadataDecode RAW sensor imageDe-mosaic reconstructionApply lens correctionReduce noiseColor-match scene-referred sensor valuesto output-referred color spaceAdjust exposure and temperature/tintAdd sharpening, contrast, and saturation
Adjusting RAW ImagesAdvantages of RAW
Adjusting RAW ImagesAdvantages of RAWContains linear and deep pixel data which enables great editability
Adjusting RAW ImagesAdvantages of RAWContains linear and deep pixel data which enables great editabilityImage processing gets better every year
Adjusting RAW ImagesAdvantages of RAWContains linear and deep pixel data which enables great editabilityImage processing gets better every yearCan be rendered to any color space
Adjusting RAW ImagesAdvantages of RAWContains linear and deep pixel data which enables great editabilityImage processing gets better every yearCan be rendered to any color spaceUsers can use different software to interpret the image
Adjusting RAW ImagesAdvantages of JPEG
Adjusting RAW ImagesAdvantages of JPEGFast to load and display
Adjusting RAW ImagesAdvantages of JPEGFast to load and displayContains colors targeting a specific color space
Adjusting RAW ImagesAdvantages of JPEGFast to load and displayContains colors targeting a specific color spacePredictable results
Adjusting RAW ImagesAdvantages of JPEGFast to load and displayContains colors targeting a specific color spacePredictable resultsCameras can provide a great default image for display
Adjusting RAW ImagesAdvantages of JPEGFast to load and displayContains colors targeting a specific color spacePredictable resultsCameras can provide a great default image for display iOS cameras are a good example of this
Adjusting RAW ImagesPlatform support
Adjusting RAW ImagesPlatform supportNow Core Image fully supports RAW on iOS and tvOS
Adjusting RAW ImagesPlatform supportNow Core Image fully supports RAW on iOS and tvOS Supports over 400 unique camera models from 16 vendors
Adjusting RAW ImagesPlatform supportNow Core Image fully supports RAW on iOS and tvOS Supports over 400 unique camera models from 16 vendors Also supports DNG files captured from iOS devices
Adjusting RAW ImagesPlatform supportNow Core Image fully supports RAW on iOS and tvOS Supports over 400 unique camera models from 16 vendors Also supports DNG files captured from iOS devices- iSight cameras on iPhone 6S, iPhone 6S Plus, iPhone SE, iPad Pro (9.7-inch)
Adjusting RAW ImagesPlatform supportNow Core Image fully supports RAW on iOS and tvOS Supports over 400 unique camera models from 16 vendors Also supports DNG files captured from iOS devices- iSight cameras on iPhone 6S, iPhone 6S Plus, iPhone SE, iPad Pro (9.7-inch)Advances in iOS PhotographyPacific HeightsTuesday 11:00AM
Adjusting RAW ImagesPlatform supportNow Core Image fully supports RAW on iOS and tvOS Supports over 400 unique camera models from 16 vendors Also supports DNG files captured from iOS devices- iSight cameras on iPhone 6S, iPhone 6S Plus, iPhone SE, iPad Pro (9.7-inch) The same high-performance RAW pipeline as on macOSAdvances in iOS PhotographyPacific HeightsTuesday 11:00AM
Adjusting RAW ImagesPlatform supportNow Core Image fully supports RAW on iOS and tvOS Supports over 400 unique camera models from 16 vendors Also supports DNG files captured from iOS devices- iSight cameras on iPhone 6S, iPhone 6S Plus, iPhone SE, iPad Pro (9.7-inch) The same high-performance RAW pipeline as on macOS Requires A8 or newer processor (iOS GPU Family 2)Advances in iOS PhotographyPacific HeightsTuesday 11:00AM
Adjusting RAW ImagesPlatform support
Adjusting RAW ImagesPlatform supportWe continuously add support for cameras and improve quality
Adjusting RAW ImagesPlatform supportWe continuously add support for cameras and improve quality New cameras are added in software updates
Adjusting RAW ImagesPlatform supportWe continuously add support for cameras and improve quality New cameras are added in software updates Pipeline improvements are versioned
DemoAdjusting images on iOS
Adjusting RAW ImagesCIRAWFilter API lets you control the stagesCIRAWFilter gives your application:
Adjusting RAW ImagesCIRAWFilter API lets you control the stagesCIRAWFilter gives your application: CIImage with wide gamut, extended range, half-float precision
Adjusting RAW ImagesCIRAWFilter API lets you control the stagesCIRAWFilter gives your application: CIImage with wide gamut, extended range, half-float precision Easy control over RAW processing parameters
Adjusting RAW ImagesCIRAWFilter API lets you control the stagesCIRAWFilter gives your application: CIImage with wide gamut, extended range, half-float precision Easy control over RAW processing parameters Fast, interactive performance using GPU
Adjusting RAW ImagesUsing the CIRAWFilter APIRAW Image File File URL File data CVPixelBuffer
Adjusting RAW ImagesUsing the CIRAWFilter APIRAW Image File File URL File data CVPixelBufferCIRAWFilter
Adjusting RAW ImagesUsing the CIRAWFilter APIRAW Image File File URL File data CVPixelBufferUser Adjustments Exposure Temperature, tint Noise reductionCIRAWFilter
Adjusting RAW ImagesUsing the CIRAWFilter APIRAW Image File File URL File data CVPixelBufferUser Adjustments Exposure Temperature, tint Noise reductionCIRAWFilterCIImage
// Using the CIRAWFilter APIfunc getAdjustedRAW(url: URL) - CIImage?{// Load the imagelet f CIFilter(imageURL: url, options:nil)// Get the NR amountif let nr f.value(forKey: kCIInputLuminanceNoiseReductionAmountKey) {// Change the NR amountf.setValue(nr.doubleValue 0.1,forKey: kCIInputLuminanceNoiseReductionAmountKey)}// Get the adjusted imagereturn f.outputImage}
// Using the CIRAWFilter APIfunc getAdjustedRAW(url: URL) - CIImage?{// Load the imagelet f CIFilter(imageURL: url, options:nil)// Get the NR amountif let nr f.value(forKey: kCIInputLuminanceNoiseReductionAmountKey) {// Change the NR amountf.setValue(nr.doubleValue 0.1,forKey: kCIInputLuminanceNoiseReductionAmountKey)}// Get the adjusted imagereturn f.outputImage}
// Using the CIRAWFilter APIfunc getAdjustedRAW(url: URL) - CIImage?{// Load the imagelet f CIFilter(imageURL: url, options:nil)// Get the NR amountif let nr f.value(forKey: kCIInputLuminanceNoiseReductionAmountKey) {// Change the NR amountf.setValue(nr.doubleValue 0.1,forKey: kCIInputLuminanceNoiseReductionAmountKey)}// Get the adjusted imagereturn f.outputImage}
// Using the CIRAWFilter APIfunc getAdjustedRAW(url: URL) - CIImage?{// Load the imagelet f CIFilter(imageURL: url, options:nil)// Get the NR amountif let nr f.value(forKey: kCIInputLuminanceNoiseReductionAmountKey) {// Change the NR amountf.setValue(nr.doubleValue 0.1,forKey: kCIInputLuminanceNoiseReductionAmountKey)}// Get the adjusted imagereturn f.outputImage}
// Using the CIRAWFilter APIfunc getAdjustedRAW(url: URL) - CIImage?{// Load the imagelet f CIFilter(imageURL: url, options:nil)// Get the NR amountif let nr f.value(forKey: kCIInputLuminanceNoiseReductionAmountKey) {// Change the NR amountf.setValue(nr.doubleValue 0.1,forKey: kCIInputLuminanceNoiseReductionAmountKey)}// Get the adjusted imagereturn f.outputImage}
// Using the CIRAWFilter APIfunc getAdjustedRAW(url: URL) - CIImage?{// Load the imagelet f CIFilter(imageURL: url, options:nil)// Get the NR amountif let nr f.value(forKey: kCIInputLuminanceNoiseReductionAmountKey) {// Change the NR amountf.setValue(nr.doubleValue 0.1,forKey: kCIInputLuminanceNoiseReductionAmountKey)}// Get the adjusted imagereturn f.outputImage}
Adjusting RAW ImagesUsing the CIRAWFilter APIRAW Image File File URL File data CVPixelBufferUser Adjustments Exposure Temperature, tint Noise reductionCIRAWFilterCIImage
Adjusting RAW ImagesUsing the CIRAWFilter APIRAW Image File File URL File data CVPixelBufferUser Adjustments Exposure Temperature, tint Noise reductionCIRAWFilterCIImage
Adjusting RAW ImagesUsing the CIRAWFilter APIRAW Image File File URL File data CVPixelBufferUser Adjustments Exposure Temperature, tint Noise reductionCIRAWFilterCIImage
Adjusting RAW ImagesUsing the CIRAWFilter APIRAW Image File File URL File data CVPixelBufferUser Adjustments Exposure Temperature, tint Noise reductionCIRAWFilterCIImage
Adjusting RAW ImagesUsing the CIRAWFilter APIRAW Image File File URL File data CVPixelBufferUser Adjustments Exposure Temperature, tint Noise reductionCIRAWFilterCIImage
Adjusting RAW ImagesUsing the CIRAWFilter APIRAW Image File File URL File data CVPixelBufferUser Adjustments Exposure Temperature, tint Noise reductionCIRAWFilterCIImage
Adjusting RAW ImagesUsing the CIRAWFilter APIRAW Image File File URL File data CVPixelBufferUser Adjustments Exposure Temperature, tint Noise reductionCIRAWFilterCIImage
Adjusting RAW ImagesUsing the CIRAWFilter APIRAW Image File File URL File data CVPixelBufferUser Adjustments Exposure Temperature, tint Noise reductionCIRAWFilterCIImageCGImage
Adjusting RAW ImagesUsing the CIRAWFilter APIRAW Image File File URL File data CVPixelBufferCIRAWFilterCIImageCGImageUser Adjustments Exposure Temperature, tint Noise reductionOutput Image(JPG, TIF, )
// Saving a RAW to a JPEG or TIFFclass myClass {lazy var contextForSaving: CIContext CIContext(options:[kCIContextCacheIntermediates : false,kCIContextPriorityRequestLow : true]) // Now this works on macOS
Platform support Adjusting RAW Images Now Core Image fully supports RAW on iOS and tvOS Supports over 400 unique camera models from 16 vendors Also supports DNG files captured from iOS devices-iSight cameras on iPhone 6S, iPhone 6S Plus, iPhone SE, iPad Pro (9.7-inch) The same high-performance RAW pipeline as on macOS Advances in iOS Photography Pacific Heights Tuesday 11:00AM
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