---
title: computationAccuracy
framework: vision
role: symbol
role_heading: Instance Property
path: vision/vntrackopticalflowrequest/computationaccuracy-swift.property
---

# computationAccuracy

The level of accuracy to compute the optical flow.

## Declaration

```swift
var computationAccuracy: VNTrackOpticalFlowRequest.ComputationAccuracy { get set }
```

## Discussion

Discussion The computational time trends with accuracy level. The default value is VNTrackOpticalFlowRequest.ComputationAccuracy.medium.

## See Also

### Configuring the Request

- [VNTrackOpticalFlowRequest.ComputationAccuracy](vision/vntrackopticalflowrequest/computationaccuracy-swift.enum.md)
- [keepNetworkOutput](vision/vntrackopticalflowrequest/keepnetworkoutput.md)
- [outputPixelFormat](vision/vntrackopticalflowrequest/outputpixelformat.md)