---
title: maximumAspectRatio
framework: vision
role: symbol
role_heading: Instance Property
path: vision/vndetectrectanglesrequest/maximumaspectratio
---

# maximumAspectRatio

A float specifying the maximum aspect ratio of the rectangle to detect, defined as the shorter dimension over the longer dimension.

## Declaration

```swift
var maximumAspectRatio: VNAspectRatio { get set }
```

## Discussion

Discussion The value should range from 0.0 to 1.0, inclusive. The default value is 0.5.

## See Also

### Configuring Detection

- [minimumAspectRatio](vision/vndetectrectanglesrequest/minimumaspectratio.md)
- [VNAspectRatio](vision/vnaspectratio.md)
- [quadratureTolerance](vision/vndetectrectanglesrequest/quadraturetolerance.md)
- [VNDegrees](vision/vndegrees.md)
- [minimumSize](vision/vndetectrectanglesrequest/minimumsize.md)
- [minimumConfidence](vision/vndetectrectanglesrequest/minimumconfidence.md)
- [VNConfidence](vision/vnconfidence.md)
- [maximumObservations](vision/vndetectrectanglesrequest/maximumobservations.md)