---
title: SaliencyImageObservation
framework: vision
role: symbol
role_heading: Structure
path: vision/saliencyimageobservation
---

# SaliencyImageObservation

An observation that contains a grayscale heat map of important areas across an image.

## Declaration

```swift
struct SaliencyImageObservation
```

## Topics

### Creating an observation

- [init(_:)](vision/saliencyimageobservation/init(_:).md)

### Inspecting an observation

- [RequestDescriptor](vision/requestdescriptor.md)
- [heatMap](vision/saliencyimageobservation/heatmap.md)
- [PixelBufferObservation](vision/pixelbufferobservation.md)
- [salientObjects](vision/saliencyimageobservation/salientobjects.md)
- [RectangleObservation](vision/rectangleobservation.md)

## Relationships

### Conforms To

- [Copyable](swift/copyable.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Decodable](swift/decodable.md)
- [Encodable](swift/encodable.md)
- [Equatable](swift/equatable.md)
- [Escapable](swift/escapable.md)
- [Hashable](swift/hashable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)
- [VisionObservation](vision/visionobservation.md)