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# VNRectangleObservation

An object that represents the four vertices of a detected rectangle.

```
class VNRectangleObservation
```

## Topics

### Creating an Observation

[`init(requestRevision:topLeft:topRight:bottomRight:bottomLeft:)`](/documentation/Vision/VNRectangleObservation/init(requestRevision:topLeft:topRight:bottomRight:bottomLeft:))

Creates a rectangle observation from its corner points.

[`init(requestRevision:topLeft:bottomLeft:bottomRight:topRight:)`](/documentation/Vision/VNRectangleObservation/init(requestRevision:topLeft:bottomLeft:bottomRight:topRight:))

Creates a rectangle observation from its corner points.

### Accessing the Coordinates

[`bottomLeft`](/documentation/Vision/VNRectangleObservation/bottomLeft)

The coordinates of the lower-left corner of the observation bounding box.

[`bottomRight`](/documentation/Vision/VNRectangleObservation/bottomRight)

The coordinates of the lower-right corner of the observation bounding box.

[`topLeft`](/documentation/Vision/VNRectangleObservation/topLeft)

The coordinates of the upper-left corner of the observation bounding box.

[`topRight`](/documentation/Vision/VNRectangleObservation/topRight)

The coordinates of the upper-right corner of the observation bounding box.


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