# colorTransform The color transform used to initialize the Sobel filter. ``` var colorTransform: UnsafePointer { get } ``` ## Discussion This property returns a pointer to the array of 3 floats used to convert RGBA, RGB or RG source images to the destination texture format when said destination is monochrome. --- 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)