---
title: kvImageConvert_OrderedGaussianBlue
framework: accelerate
role: symbol
role_heading: Global Variable
path: accelerate/kvimageconvert_orderedgaussianblue
---

# kvImageConvert_OrderedGaussianBlue

A constant that indicates the conversion will distribute the noise according to a Gaussian distribution.

## Declaration

```swift
var kvImageConvert_OrderedGaussianBlue: UInt32 { get }
```

## Discussion

Discussion The following shows an 8-bit RGB image converted to a 1-bit planar image with vImageConvert_Planar8toPlanar1(_:_:_:_:_:) using kvImageConvert_DitherOrderedReproducible. The image on the left uses kvImageConvert_OrderedGaussianBlue, and the image on the right uses kvImageConvert_OrderedUniformBlue:

To learn about converting an RGB image to grayscale, see Converting color images to grayscale.

## See Also

### Constants

- [kvImageConvert_DitherNone](accelerate/kvimageconvert_dithernone.md)
- [kvImageConvert_DitherOrdered](accelerate/kvimageconvert_ditherordered.md)
- [kvImageConvert_DitherOrderedReproducible](accelerate/kvimageconvert_ditherorderedreproducible.md)
- [kvImageConvert_DitherFloydSteinberg](accelerate/kvimageconvert_ditherfloydsteinberg.md)
- [kvImageConvert_DitherAtkinson](accelerate/kvimageconvert_ditheratkinson.md)
- [kvImageConvert_OrderedUniformBlue](accelerate/kvimageconvert_ordereduniformblue.md)
- [kvImageConvert_OrderedNoiseShapeMask](accelerate/kvimageconvert_orderednoiseshapemask.md)