# vImage.MorphologyOperation Describes which morphology operation to perform. ``` enum MorphologyOperation ``` ## Topics ### Enumeration Cases [`case dilate(structuringElement: vImage.ConvolutionKernel2D)`](/documentation/Accelerate/vImage/MorphologyOperation/dilate(structuringElement:)) Applies dilation using a structuring element. [`case erode(structuringElement: vImage.ConvolutionKernel2D)`](/documentation/Accelerate/vImage/MorphologyOperation/erode(structuringElement:)) Applies erosion using a structuring element. [`case maximize(kernelSize: vImage.Size)`](/documentation/Accelerate/vImage/MorphologyOperation/maximize(kernelSize:)) Maximizes using an implicit kernel of a specified size. [`case minimize(kernelSize: vImage.Size)`](/documentation/Accelerate/vImage/MorphologyOperation/minimize(kernelSize:)) Minimizes using an implicit kernel of a specified size. ### Instance Properties [`var structuringElement: vImage.ConvolutionKernel2D?`](/documentation/Accelerate/vImage/MorphologyOperation/structuringElement) The dilation or erosion structuring element. [`var height: vImagePixelCount`](/documentation/Accelerate/vImage/MorphologyOperation/height) The height of the morphology kernel. [`var width: vImagePixelCount`](/documentation/Accelerate/vImage/MorphologyOperation/width) The width of the morphology kernel. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)