---
title: VNContour
framework: vision
role: symbol
role_heading: Class
path: vision/vncontour
---

# VNContour

A class that represents a detected contour in an image.

## Declaration

```swift
class VNContour
```

## Topics

### Inspecting the Contour

- [aspectRatio](vision/vncontour/aspectratio.md)
- [indexPath](vision/vncontour/indexpath.md)
- [normalizedPath](vision/vncontour/normalizedpath.md)
- [pointCount](vision/vncontour/pointcount.md)
- [normalizedPoints](vision/vncontour/normalizedpoints-8n2s5.md)
- [polygonApproximation(epsilon:)](vision/vncontour/polygonapproximation(epsilon:).md)

### Accessing Child Contours

- [childContourCount](vision/vncontour/childcontourcount.md)
- [childContours](vision/vncontour/childcontours.md)
- [childContour(at:)](vision/vncontour/childcontour(at:).md)

## Relationships

### Inherits From

- [NSObject](objectivec/nsobject-swift.class.md)

### Conforms To

- [CVarArg](swift/cvararg.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [NSCopying](foundation/nscopying.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)
- [VNRequestRevisionProviding](vision/vnrequestrevisionproviding.md)

## See Also

### Inspecting the Observation

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