---
title: "RequestDescriptor.detectContoursRequest(_:)"
framework: vision
role: symbol
role_heading: Case
path: "vision/requestdescriptor/detectcontoursrequest(_:)"
---

# RequestDescriptor.detectContoursRequest(_:)

A descriptor that describes a detect contours request.

## Declaration

```swift
case detectContoursRequest(DetectContoursRequest.Revision)
```

## See Also

### Getting the trajectory, contour, and horizon detection descriptor

- [RequestDescriptor.detectTrajectoriesRequest(_:)](vision/requestdescriptor/detecttrajectoriesrequest(_:).md)
- [RequestDescriptor.detectHorizonRequest(_:)](vision/requestdescriptor/detecthorizonrequest(_:).md)