---
title: GenerateIterativeSegmentationRequest.QualityLevel.fast
framework: vision
role: symbol
role_heading: Case
path: vision/generateiterativesegmentationrequest/qualitylevel-swift.enum/fast
---

# GenerateIterativeSegmentationRequest.QualityLevel.fast

Produces a low resolution mask, but runs very quickly

## Declaration

```swift
case fast
```