---
title: randomGenerator()
framework: coreimage
role: symbol
role_heading: Type Method
path: coreimage/cifilter-swift.class/randomgenerator()
---

# randomGenerator()

Generates a random filter image.

## Declaration

```swift
class func randomGenerator() -> any CIFilter & CIRandomGenerator
```

## Mentioned in

Simulating Scratchy Analog Film

## Return Value

Return Value The generated image.

## Discussion

Discussion This method generates an image with infinite extent. The image pixels values are from one of four independent, uniformly distributed random colors. The following code creates a filter that generates a random color image: func random() -> CIImage {    let randomGenerator = CIFilter.randomGenerator()    return randomGenerator.outputImage! }

## See Also

### Filters

- [attributedTextImageGenerator()](coreimage/cifilter-swift.class/attributedtextimagegenerator().md)
- [aztecCodeGenerator()](coreimage/cifilter-swift.class/azteccodegenerator().md)
- [barcodeGenerator()](coreimage/cifilter-swift.class/barcodegenerator().md)
- [blurredRectangleGenerator()](coreimage/cifilter-swift.class/blurredrectanglegenerator().md)
- [checkerboardGenerator()](coreimage/cifilter-swift.class/checkerboardgenerator().md)
- [code128BarcodeGenerator()](coreimage/cifilter-swift.class/code128barcodegenerator().md)
- [lenticularHaloGenerator()](coreimage/cifilter-swift.class/lenticularhalogenerator().md)
- [meshGenerator()](coreimage/cifilter-swift.class/meshgenerator().md)
- [pdf417BarcodeGenerator()](coreimage/cifilter-swift.class/pdf417barcodegenerator().md)
- [qrCodeGenerator()](coreimage/cifilter-swift.class/qrcodegenerator().md)
- [roundedRectangleGenerator()](coreimage/cifilter-swift.class/roundedrectanglegenerator().md)
- [roundedRectangleStrokeGenerator()](coreimage/cifilter-swift.class/roundedrectanglestrokegenerator().md)
- [starShineGenerator()](coreimage/cifilter-swift.class/starshinegenerator().md)
- [stripesGenerator()](coreimage/cifilter-swift.class/stripesgenerator().md)
- [sunbeamsGenerator()](coreimage/cifilter-swift.class/sunbeamsgenerator().md)