---
title: CVImageChromaField.SampleLocation.topLeft
framework: corevideo
role: symbol
role_heading: Case
path: corevideo/cvimagechromafield/samplelocation/topleft
---

# CVImageChromaField.SampleLocation.topLeft

Chroma sample is co-sited with the top-left luma sample.

## Declaration

```swift
case topLeft
```