---
title: CICannyEdgeDetector
framework: coreimage
role: symbol
role_heading: Protocol
path: coreimage/cicannyedgedetector
---

# CICannyEdgeDetector

## Declaration

```swift
protocol CICannyEdgeDetector : CIFilterProtocol
```

## Topics

### Instance Properties

- [gaussianSigma](coreimage/cicannyedgedetector/gaussiansigma.md)
- [hysteresisPasses](coreimage/cicannyedgedetector/hysteresispasses.md)
- [inputImage](coreimage/cicannyedgedetector/inputimage.md)
- [perceptual](coreimage/cicannyedgedetector/perceptual.md)
- [thresholdHigh](coreimage/cicannyedgedetector/thresholdhigh.md)
- [thresholdLow](coreimage/cicannyedgedetector/thresholdlow.md)

## Relationships

### Inherits From

- [CIFilterProtocol](coreimage/cifilterprotocol.md)

## See Also

### Protocols

- [CIBlendWithMask](coreimage/ciblendwithmask.md)
- [CIBloom](coreimage/cibloom.md)
- [CIComicEffect](coreimage/cicomiceffect.md)
- [CICoreMLModel](coreimage/cicoremlmodel.md)
- [CICrystallize](coreimage/cicrystallize.md)
- [CIDepthOfField](coreimage/cidepthoffield.md)
- [CIEdgeWork](coreimage/ciedgework.md)
- [CIEdges](coreimage/ciedges.md)
- [CIGaborGradients](coreimage/cigaborgradients.md)
- [CIGloom](coreimage/cigloom.md)
- [CIHeightFieldFromMask](coreimage/ciheightfieldfrommask.md)
- [CIHexagonalPixellate](coreimage/cihexagonalpixellate.md)
- [CIHighlightShadowAdjust](coreimage/cihighlightshadowadjust.md)
- [CILineOverlay](coreimage/cilineoverlay.md)
- [CIMix](coreimage/cimix.md)