# applyMorphology(operation:destination:) Applies a morphology operation to the buffer. ``` func applyMorphology(operation: vImage.MorphologyOperation, destination: vImage.PixelBuffer) ``` ## Parameters `operation` The operation that the function applies. `destination` The destination pixel buffer. ## Discussion> Precondition: Source and destination buffer must be the same size. > Precondition: The kernel size width and height must be positive, odd integers in the range > Precondition: `dilate` and `erode` user defined kernels must contain `width * height` elements. > Precondition: Source and destination buffers must point to different underlying memory. --- 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)