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# kvImageConvert_DitherAtkinson

A constant that indicates the conversion will add Atkinson dithering to the image.

```
var kvImageConvert_DitherAtkinson: UInt32 { get }
```

## Discussion

The following shows an 8-bit RGB image converted to a 1-bit planar image with [`vImageConvert_Planar8toPlanar1(_:_:_:_:_:)`](/documentation/Accelerate/vImageConvert_Planar8toPlanar1(_:_:_:_:_:)) using [`kvImageConvert_DitherAtkinson`](/documentation/Accelerate/kvImageConvert_DitherAtkinson):

![Photos showing the original image and the dithered image.](images/com.apple.accelerate/media-3358015@2x.png)

To learn about converting an RGB image to grayscale, see <doc://com.apple.documentation/documentation/Accelerate/converting-color-images-to-grayscale>.

---

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