# Applying geometric operations to pixel buffers Reflect, shear, rotate, scale, and apply affine transforms to image data. ## Topics ### Reflecting images [`func reflect(over: vImage.ReflectionAxis, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/reflect(over:destination:)-9ezqm) Reflects an 8-bit planar pixel buffer over a horizontal or vertical axis. [`func reflect(over: vImage.ReflectionAxis, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/reflect(over:destination:)-529j0) Reflects a floating-point 16-bit planar pixel buffer over a horizontal or vertical axis. [`func reflect(over: vImage.ReflectionAxis, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/reflect(over:destination:)-4i4vi) Reflects a 32-bit planar pixel buffer over a horizontal or vertical axis. [`func reflect(over: vImage.ReflectionAxis, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/reflect(over:destination:)-6syq1) Reflects a floating-point 16-bit-per-channel, two-channel interleaved pixel buffer over a horizontal or vertical axis. [`func reflect(over: vImage.ReflectionAxis, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/reflect(over:destination:)-7o9tt) Reflects an 8-bit-per-channel, four-channel interleaved pixel buffer over a horizontal or vertical axis. [`func reflect(over: vImage.ReflectionAxis, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/reflect(over:destination:)-fg4a) Reflects an unsigned 16-bit-per-channel, four-channel interleaved pixel buffer over a horizontal or vertical axis. [`func reflect(over: vImage.ReflectionAxis, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/reflect(over:destination:)-97wi9) Reflects a floating-point 16-bit-per-channel, four-channel interleaved pixel buffer over a horizontal or vertical axis. [`func reflect(over: vImage.ReflectionAxis, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/reflect(over:destination:)-7b1md) Reflects a 32-bit-per-channel, four-channel interleaved pixel buffer over a horizontal or vertical axis. [`enum ReflectionAxis`](/documentation/Accelerate/vImage/ReflectionAxis) The axis to reflect an image. ### Rotating images [`func rotate(vImage.Rotation, backgroundColor: Pixel_8?, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/rotate(_:backgroundColor:destination:)-7patt) Rotates an 8-bit planar pixel buffer. [`func rotate(vImage.Rotation, backgroundColor: Pixel_16F?, useFloat16Accumulator: Bool, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/rotate(_:backgroundColor:useFloat16Accumulator:destination:)-9harr) Rotates a floating-point 16-bit planar pixel buffer. [`func rotate(vImage.Rotation, backgroundColor: Pixel_F?, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/rotate(_:backgroundColor:destination:)-7tzsn) Rotates a 32-bit planar pixel buffer. [`func rotate(vImage.Rotation, backgroundColor: Pixel_16F16F?, useFloat16Accumulator: Bool, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/rotate(_:backgroundColor:useFloat16Accumulator:destination:)-61l7b) Rotates a floating-point 16-bit-per-channel, two-channel interleaved pixel buffer. [`func rotate(vImage.Rotation, backgroundColor: Pixel_8888?, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/rotate(_:backgroundColor:destination:)-2li9v) Rotates an 8-bit-per-channel, four-channel interleaved pixel buffer. [`func rotate(vImage.Rotation, backgroundColor: Pixel_ARGB_16U?, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/rotate(_:backgroundColor:destination:)-692ke) Rotates an unsigned 16-bit-per-channel, four-channel interleaved pixel buffer. [`func rotate(vImage.Rotation, backgroundColor: Pixel_ARGB_16F?, useFloat16Accumulator: Bool, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/rotate(_:backgroundColor:useFloat16Accumulator:destination:)-8glur) Rotates a floating-point 16-bit-per-channel, four-channel interleaved pixel buffer. [`func rotate(vImage.Rotation, backgroundColor: Pixel_FFFF?, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/rotate(_:backgroundColor:destination:)-9bnb6) Rotates a 32-bit-per-channel, four-channel interleaved pixel buffer. [`enum Rotation`](/documentation/Accelerate/vImage/Rotation) The angle to rotate an image. ### Scaling images [`func scale(destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/scale(destination:)-5euvc) Scales an 8-bit planar pixel buffer to fit the destination buffer. [`func scale(destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/scale(destination:)-9si6m) Scales an unsigned 16-bit planar pixel buffer to fit the destination buffer. [`func scale(useFloat16Accumulator: Bool, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/scale(useFloat16Accumulator:destination:)-5lt9n) Scales a floating-point 16-bit planar pixel buffer to fit the destination buffer. [`func scale(destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/scale(destination:)-6xwro) Scales a 32-bit planar pixel buffer to fit the destination buffer. [`func scale(destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/scale(destination:)-6gy9p) Scales an 8-bit-per-channel, two-channel interleaved pixel buffer to fit the destination buffer. [`func scale(destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/scale(destination:)-4p5r6) Scales an unsigned 16-bit-per-channel, two-channel interleaved pixel buffer to fit the destination buffer. [`func scale(useFloat16Accumulator: Bool, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/scale(useFloat16Accumulator:destination:)-thg7) Scales a floating-point 16-bit-per-channel, two-channel interleaved pixel buffer to fit the destination buffer. [`func scale(destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/scale(destination:)-y1zi) Scales an 8-bit-per-channel, four-channel interleaved pixel buffer to fit the destination buffer. [`func scale(destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/scale(destination:)-5tpok) Scales an unsigned 16-bit-per-channel, four-channel interleaved pixel buffer to fit the destination buffer. [`func scale(useFloat16Accumulator: Bool, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/scale(useFloat16Accumulator:destination:)-st2u) Scales a floating-point 16-bit-per-channel, four-channel interleaved pixel buffer to fit the destination buffer. [`func scale(destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/scale(destination:)-2hqm3) Scales a 32-bit-per-channel, four-channel interleaved pixel buffer to fit the destination buffer. ### Shearing images [`func shear(direction: vImage.ShearDirection, translate: T, slope: T, resamplingFilter: ResamplingFilter, backgroundColor: Pixel_8?, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/shear(direction:translate:slope:resamplingFilter:backgroundColor:destination:)-2gf4y) Performs a horizontal or vertical shear operation on an 8-bit planar pixel buffer. [`func shear(direction: vImage.ShearDirection, translate: Float, slope: Float, resamplingFilter: ResamplingFilter, backgroundColor: Pixel_16U?, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/shear(direction:translate:slope:resamplingFilter:backgroundColor:destination:)-5busu) Performs a horizontal or vertical shear operation on an unsigned 16-bit planar pixel buffer. [`func shear(direction: vImage.ShearDirection, translate: T, slope: T, resamplingFilter: ResamplingFilter, backgroundColor: Pixel_16F?, useFloat16Accumulator: Bool, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/shear(direction:translate:slope:resamplingFilter:backgroundColor:useFloat16Accumulator:destination:)-26sh4) Performs a horizontal or vertical shear operation on a floating-point 16-bit planar pixel buffer. [`func shear(direction: vImage.ShearDirection, translate: T, slope: T, resamplingFilter: ResamplingFilter, backgroundColor: Pixel_F?, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/shear(direction:translate:slope:resamplingFilter:backgroundColor:destination:)-85o1n) Performs a horizontal or vertical shear operation on a 32-bit planar pixel buffer. [`func shear(direction: vImage.ShearDirection, translate: T, slope: T, resamplingFilter: ResamplingFilter, backgroundColor: Pixel_16U16U?, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/shear(direction:translate:slope:resamplingFilter:backgroundColor:destination:)-57dzf) Performs a horizontal or vertical shear operation on an unsigned 16-bit-per-channel, two-channel interleaved pixel buffer. [`func shear(direction: vImage.ShearDirection, translate: Float, slope: Float, resamplingFilter: ResamplingFilter, backgroundColor: Pixel_88?, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/shear(direction:translate:slope:resamplingFilter:backgroundColor:destination:)-7fou8) Performs a horizontal or vertical shear operation on an 8-bit-per-channel, two-channel interleaved pixel buffer. [`func shear(direction: vImage.ShearDirection, translate: T, slope: T, resamplingFilter: ResamplingFilter, backgroundColor: Pixel_16F16F?, useFloat16Accumulator: Bool, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/shear(direction:translate:slope:resamplingFilter:backgroundColor:useFloat16Accumulator:destination:)-7nh4n) Performs a horizontal or vertical shear operation on a floating-point 16-bit-per-channel, two-channel interleaved pixel buffer. [`func shear(direction: vImage.ShearDirection, translate: T, slope: T, resamplingFilter: ResamplingFilter, backgroundColor: Pixel_8888?, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/shear(direction:translate:slope:resamplingFilter:backgroundColor:destination:)-95446) Performs a horizontal or vertical shear operation on an 8-bit-per-channel, four-channel interleaved pixel buffer. [`func shear(direction: vImage.ShearDirection, translate: T, slope: T, resamplingFilter: ResamplingFilter, backgroundColor: Pixel_ARGB_16U?, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/shear(direction:translate:slope:resamplingFilter:backgroundColor:destination:)-2ezuh) Performs a horizontal or vertical shear operation on an unsigned 16-bit-per-channel, four-channel interleaved pixel buffer. [`func shear(direction: vImage.ShearDirection, translate: T, slope: T, resamplingFilter: ResamplingFilter, backgroundColor: Pixel_ARGB_16F?, useFloat16Accumulator: Bool, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/shear(direction:translate:slope:resamplingFilter:backgroundColor:useFloat16Accumulator:destination:)-7kddt) Performs a horizontal or vertical shear operation on a floating-point 16-bit-per-channel, four-channel interleaved pixel buffer. [`func shear(direction: vImage.ShearDirection, translate: T, slope: T, resamplingFilter: ResamplingFilter, backgroundColor: Pixel_FFFF?, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/shear(direction:translate:slope:resamplingFilter:backgroundColor:destination:)-7r29q) Performs a horizontal or vertical shear operation on a 32-bit-per-channel, four-channel interleaved pixel buffer. [`enum ShearDirection`](/documentation/Accelerate/vImage/ShearDirection) The shear direction. ### Applying affine transformations to images [`func transform(CGAffineTransform, backgroundColor: Pixel_8?, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/transform(_:backgroundColor:destination:)-4wy4q) Applies a Core Graphics affine transformation to an 8-bit planar pixel buffer. [`func transform(CGAffineTransform, backgroundColor: Pixel_16F?, useFloat16Accumulator: Bool, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/transform(_:backgroundColor:useFloat16Accumulator:destination:)-1470p) Applies a Core Graphics affine transformation to a floating-point 16-bit planar pixel buffer. [`func transform(CGAffineTransform, backgroundColor: Pixel_F?, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/transform(_:backgroundColor:destination:)-1s38) Applies a Core Graphics affine transformation to a floating-point 32-bit planar pixel buffer. [`func transform(CGAffineTransform, backgroundColor: Pixel_16F16F?, useFloat16Accumulator: Bool, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/transform(_:backgroundColor:useFloat16Accumulator:destination:)-4w4jr) Applies a Core Graphics affine transformation to a floating-point 16-bit-per-channel, two-channel interleaved pixel buffer. [`func transform(CGAffineTransform, backgroundColor: Pixel_8888?, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/transform(_:backgroundColor:destination:)-5kxj6) Applies a Core Graphics affine transformation to an 8-bit-per-channel, four-channel interleaved pixel buffer. [`func transform(CGAffineTransform, backgroundColor: Pixel_ARGB_16U?, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/transform(_:backgroundColor:destination:)-nl6g) Applies a Core Graphics affine transformation to an unsigned 16-bit-per-channel, four-channel interleaved pixel buffer. [`func transform(CGAffineTransform, backgroundColor: Pixel_ARGB_16F?, useFloat16Accumulator: Bool, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/transform(_:backgroundColor:useFloat16Accumulator:destination:)-1lvaa) Applies a Core Graphics affine transformation to a floating-point 16-bit-per-channel, four-channel interleaved pixel buffer. [`func transform(CGAffineTransform, backgroundColor: Pixel_FFFF?, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/transform(_:backgroundColor:destination:)-9ggt) Applies a Core Graphics affine transformation to a floating-point 32-bit-per-channel, four-channel interleaved pixel buffer. ### Applying projective transformations to images [`func transform(vImage_PerpsectiveTransform, interpolation: vImage_PerpsectiveTransform.Interpolation, backgroundColor: Pixel_8, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/transform(_:interpolation:backgroundColor:destination:)-94t75) Applies a perspective warp to an 8-bit planar image. [`func transform(vImage_PerpsectiveTransform, interpolation: vImage_PerpsectiveTransform.Interpolation, backgroundColor: Pixel_8888, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/transform(_:interpolation:backgroundColor:destination:)-902c9) Applies a perspective warp to an interleaved 4-channel, 8-bit planar image. [`func transform(vImage_PerpsectiveTransform, interpolation: vImage_PerpsectiveTransform.Interpolation, backgroundColor: Pixel_16U, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/transform(_:interpolation:backgroundColor:destination:)-9pv8u) Applies a perspective warp to an unsigned-integer 16-bit planar image. [`func transform(vImage_PerpsectiveTransform, interpolation: vImage_PerpsectiveTransform.Interpolation, backgroundColor: Pixel_ARGB_16U, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/transform(_:interpolation:backgroundColor:destination:)-4wvdj) Applies a perspective warp to an interleaved 4-channel, unsigned 16-bit planar image. [`func transform(vImage_PerpsectiveTransform, interpolation: vImage_PerpsectiveTransform.Interpolation, backgroundColor: Pixel_16F, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/transform(_:interpolation:backgroundColor:destination:)-79mov) Applies a perspective warp to a floating-point 16-bit planar image. [`func transform(vImage_PerpsectiveTransform, interpolation: vImage_PerpsectiveTransform.Interpolation, backgroundColor: Pixel_ARGB_16F, destination: vImage.PixelBuffer)`](/documentation/Accelerate/vImage/PixelBuffer/transform(_:interpolation:backgroundColor:destination:)-7qnl8) Applies a perspective warp to an interleaved 4-channel, floating-point 16-bit planar image. --- 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)