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Questions - core-image

CIAttributedTextImageGenerator filter - text doesn't fit (NSAttributedString)

I use a Core Image filter CIAttributedTextImageGenerator to generate text as a CIImage. However, sometimes the text just doesn't fit into the resulted CIImage as you can see at the picture: I tried t...
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SmartTree

swift

nsattributedstring

core-image

cifilter

Votes: 0

Answers: 0

Performant Multi ROI Image Color Average on iOS

CoreImage's CIAreaAverage filter can easily be used to perform whole CIImage RGB color averaging. For example: let options = [CIContextOption.workingColorSpace: kCFNull as Any] let context = CIContext...
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CosmicVarion

ios

metal

core-image

cifilter

accelerate-framework

Votes: 0

Answers: 1

Latest Answer

Here is what Apple is doing in CIAreaAverage: I don't know why they follow two different paths, but this is what I think is happening: The path on the left is a stepwise reduction of the input pixels...
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Frank Rupprecht

How to convert this UIGraphics image operation to Core Image?

I write SplitMirror filter like in Apple Motion app or Snapchat lenses by using UIGraphics to use it with real time camera feed or video processing, with single image request it works well like in att...
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Coder ACJHP

swift

image-processing

core-image

imagefilter

Votes: 0

Answers: 2

Latest Answer

I think you are on the right track. You can create the left half from the right half by applying transformations to it using let leftHalf = rightHalf.transformed(by: transformation). The transformatio...
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Frank Rupprecht

How can I get a custom CIFilter to work on a CALayer for export using the AVVideoCompositionCoreAnimationTool

When using a custom CIFilter that relies on custom input parameters the parameters are not used once you set the filter to the CALayer backgroundFilters so you can render it as a video using AVVideoCo...
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Jory de Kort

swift

xcode

macos

core-image

cifilter

Votes: 0

Answers: 1

Latest Answer

There seem to be 2 things that are important to add in order for CALayers to work with the custom CIFilter. You need to override the inputKeys: override var inputKeys: [String] { return [kCIInpu...
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Jory de Kort

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