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# CICompositeOperation

The properties you use to configure a composite operation filter.

```
protocol CICompositeOperation : CIFilterProtocol
```

## Topics

### Instance Properties

[`backgroundImage`](/documentation/CoreImage/CICompositeOperation/backgroundImage)

The image to use as a background image.

[`inputImage`](/documentation/CoreImage/CICompositeOperation/inputImage)

The image to use as a foreground image.

## See Also

[Composite Operations](/documentation/CoreImage/composite-operations)

Composite images by using a range of blend modes and compositing operators.


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