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# extent

The extent of the image associated with the image accumulator.

```
var extent: CGRect { get }
```

## Discussion

Extent is a rectangle that specifies the size of the image associated with the image accumulator. This rectangle is the size of the complete region of the working coordinate space, and is a fixed area. It specifies the x-value of the rectangle origin, the y-value of the rectangle origin, and the width and height.

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