---
title: topLevelContourCount
framework: vision
role: symbol
role_heading: Instance Property
path: vision/vncontoursobservation/toplevelcontourcount
---

# topLevelContourCount

The total number of detected top-level contours.

## Declaration

```swift
var topLevelContourCount: Int { get }
```

## See Also

### Inspecting the Observation

- [contourCount](vision/vncontoursobservation/contourcount.md)
- [normalizedPath](vision/vncontoursobservation/normalizedpath.md)
- [topLevelContours](vision/vncontoursobservation/toplevelcontours.md)
- [contour(at:)](vision/vncontoursobservation/contour(at:)-9on0y.md)
- [contour(at:)](vision/vncontoursobservation/contour(at:)-52odo.md)
- [VNContour](vision/vncontour.md)