---
title: maximumObservations
framework: vision
role: symbol
role_heading: Instance Property
path: vision/vndetectrectanglesrequest/maximumobservations
---

# maximumObservations

An integer specifying the maximum number of rectangles Vision returns.

## Declaration

```swift
var maximumObservations: Int { get set }
```

## Discussion

Discussion The default value is 1. Setting this property to 0 allows Vision algorithms to return an unlimited number of observations.

## See Also

### Configuring Detection

- [minimumAspectRatio](vision/vndetectrectanglesrequest/minimumaspectratio.md)
- [maximumAspectRatio](vision/vndetectrectanglesrequest/maximumaspectratio.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)